Merge origin/master at f1402327fa

packages/client/connection/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/connection/README.md
-README.md: 1393e79aacecbbf7b186f19e4c42269595854b0e
-README.zh.md: 70380ceba1b16b2970e947fb6cd9b2af9085ae51
+README.md: 161e34c4b6018625fb690e178eb9a9f8ac0ef21b
+README.zh.md: d17012cc89c02a1b11f16d126b7c0cafe67fb2a0

packages/client/connection/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Wire consumer layer: the client plugin's apply mounts `ctx.connection` (shared api client + current-page loopback state + single-consumer stream-loop starter); the export face carries the wire contract types, the `AbstractApiClient` seam, and the loop's sink/config types. The browser carrier uses HTTP POST for unary and respond operations and opens one downlink-only WebSocket each for `events.mux` and `events.host`; the in-process carrier satisfies the same two-stream abstraction. Loopback hostname classification stays package-internal: the `/api` Host fence and WebSocket upgrades use it directly, while other client plugins consume the derived `ctx.connection.isLoopback` state. The node half's `/api` route pins the privileged method set (`host.pickDirectory`, `host.openPath`, and the whole configuration plane — `settings.describe`/`openDocument`/`update`/`replace`/`mutate` and `credentials.describe`/`set`/`unset`; reads and native actions included, since describing returns the exposed configuration, opening acts on the Host desktop, and probing an arbitrary reference reports where a credential comes from) to loopback by passing the trust fence with an empty trust list — a declared `trustedHosts` authority reaches every other method, while these stay loopback-local until a real authentication layer exists. The platform carriers and ConnectionController loop are package-internal; apply selects and drives them. The downlink boundary is documented in the [WebSocket downlink carrier Agent Note](../../../.agents/notes/implemented/architecture/2026-08-04-websocket-downlink-carrier.md); the protocol contract is api-contracts v3 §3.
+Wire consumer layer: the client plugin's apply mounts `ctx.connection` (shared api client + current-page loopback state + single-consumer stream-loop starter); the export face carries the wire contract types, the `AbstractApiClient` seam, and the loop's sink/config types. The browser carrier uses HTTP POST for unary and respond operations and opens one downlink-only WebSocket each for `events.mux` and `events.host`; the in-process carrier satisfies the same two-stream abstraction. The Host half owns the single `/api` route and its Fetch bridge; a registered TypeRT interceptor claims its Remote endpoints before the API Proxy fallback. Loopback hostname classification stays package-internal: the `/api` Host fence and WebSocket upgrades use it directly, while other client plugins consume the derived `ctx.connection.isLoopback` state. The node half's `/api` route pins the privileged method set (`host.pickDirectory`, `host.openPath`, and the whole configuration plane — `settings.describe`/`openDocument`/`update`/`replace`/`mutate` and `credentials.describe`/`set`/`unset`; reads and native actions included, since describing returns the exposed configuration, opening acts on the Host desktop, and probing an arbitrary reference reports where a credential comes from) to loopback by passing the trust fence with an empty trust list — a declared `trustedHosts` authority reaches every other method, while these stay loopback-local until a real authentication layer exists. The platform carriers and ConnectionController loop are package-internal; apply selects and drives them. The downlink boundary is documented in the [WebSocket downlink carrier Agent Note](../../../.agents/notes/implemented/architecture/2026-08-04-websocket-downlink-carrier.md); the protocol contract is api-contracts v3 §3.
 
 ## /api browser-trust fence
 

packages/client/connection/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-协议消费层：客户端插件的 apply 会挂载 `ctx.connection`（共享 API 客户端 + 当前页面的 loopback 状态 + 单消费方流循环启动器）；导出表层携带协议契约类型、`AbstractApiClient` seam，以及循环的 sink／配置类型。浏览器载体以 HTTP POST 发送 unary／respond，并为 `events.mux` 与 `events.host` 各开一条只下行的 WebSocket；进程内载体满足同一双流抽象。Loopback hostname 判定逻辑留在包内部：`/api` Host fence 与 WebSocket upgrade 会直接使用它，其他客户端插件则消费派生的 `ctx.connection.isLoopback` 状态。node 半侧的 `/api` 路由让特权方法集（`host.pickDirectory`、`host.openPath`，以及整个配置面——`settings.describe`/`openDocument`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`；读取与原生操作也在内，因为 describe 会返回已暴露的配置、打开操作会作用于 Host 桌面，而探测任意引用会报出某条凭据来自何处）以空信任表过信任 fence，从而钉在回环——已声明的 `trustedHosts` 授权可达其余全部方法，而这些方法在真正的认证层出现之前仍只限回环本机。平台载体与 ConnectionController 循环属于包内部；apply 负责选择并驱动它们。下行边界见 [WebSocket 下行载体 Agent Note](../../../.agents/notes/implemented/architecture/2026-08-04-websocket-downlink-carrier.md)；协议契约见 api-contracts v3 §3。
+协议消费层：客户端插件的 apply 会挂载 `ctx.connection`（共享 API 客户端 + 当前页面的 loopback 状态 + 单消费方流循环启动器）；导出表层携带协议契约类型、`AbstractApiClient` seam，以及循环的 sink／配置类型。浏览器载体以 HTTP POST 发送 unary／respond，并为 `events.mux` 与 `events.host` 各开一条只下行的 WebSocket；进程内载体满足同一双流抽象。Host half 持有唯一 `/api` route 及其 Fetch bridge；已注册的 TypeRT interceptor 会先认领自己的 Remote endpoint，未认领请求再回退 API Proxy。Loopback hostname 判定逻辑留在包内部：`/api` Host fence 与 WebSocket upgrade 会直接使用它，其他客户端插件则消费派生的 `ctx.connection.isLoopback` 状态。node 半侧的 `/api` 路由让特权方法集（`host.pickDirectory`、`host.openPath`，以及整个配置面——`settings.describe`/`openDocument`/`update`/`replace`/`mutate` 与 `credentials.describe`/`set`/`unset`；读取与原生操作也在内，因为 describe 会返回已暴露的配置、打开操作会作用于 Host 桌面，而探测任意引用会报出某条凭据来自何处）以空信任表过信任 fence，从而钉在回环——已声明的 `trustedHosts` 授权可达其余全部方法，而这些方法在真正的认证层出现之前仍只限回环本机。平台载体与 ConnectionController 循环属于包内部；apply 负责选择并驱动它们。下行边界见 [WebSocket 下行载体 Agent Note](../../../.agents/notes/implemented/architecture/2026-08-04-websocket-downlink-carrier.md)；协议契约见 api-contracts v3 §3。
 
 ## /api 浏览器信任栅栏
 

packages/client/connection/src/api-request-trust.ts

@@ -16,12 +16,13 @@
 import type { IncomingHttpHeaders } from 'node:http'
 import { isLoopbackHostname } from './loopback-hostname.ts'
 
-/** The request facts the fence reads (structural subset of IncomingMessage). */
+/** The request facts the fence reads from either HTTP representation. */
 interface ApiTrustRequest {
-  headers: IncomingHttpHeaders
+  headers: IncomingHttpHeaders | Headers
 }
 
-function header(headers: IncomingHttpHeaders, name: string): string | undefined {
+function header(headers: IncomingHttpHeaders | Headers, name: string): string | undefined {
+  if (headers instanceof Headers) return headers.get(name) ?? undefined
   const value = headers[name]
   return typeof value === 'string' ? value : undefined
 }
@@ -88,7 +89,7 @@ function isTrustedAuthority(hostUrl: URL, trustedHosts: readonly string[]): bool
 
 /**
  * Decide whether one /api request may reach the RPC bridge.
- * @param request - node HTTP request facts (headers).
+ * @param request - Node HTTP or Fetch request facts (headers).
  * @param trustedHosts - non-loopback authorities this deployment serves: exact `host:port`, or port-less `host` matching any port.
  * @returns true when the Host is ours (loopback or trusted) and any attached browser markers are same-origin.
  */

packages/client/connection/src/client/fixture.ts

@@ -35,10 +35,12 @@ import type {
 } from './api.ts'
 import type { RequestPayload, ResponseValue, RpcMethodMap } from '@deepseek-ai/dsh-host-apiproxy/api'
 import { AbstractApiClient, RpcId, SESSION_SEARCH_RESULT_LIMIT } from './api.ts'
+import { randomUuid } from './random-uuid.ts'
+import type { ClientConnectionRpc } from '../rpc.ts'
 
 /** The fake carrier mints like a real one (business code never mints). */
 function rpcRequest<P>(payload: P): RpcRequest<P> {
-  return { rpcId: RpcId(crypto.randomUUID()), payload }
+  return { rpcId: RpcId(randomUuid()), payload }
 }
 
 function text(t: string): ContentBlock[] {
@@ -689,9 +691,9 @@ function viewFor(event: SessionEvent, log: readonly SessionEvent[]): ToolEventVi
 
 /**
  * Fixture parallel of the plan unit's double-event fold: `command/run`
- * records named `plan` set the wanted target (`off` → false, else true);
- * `plan/mode` commits and clears it. `wanted` is exposed for the prompt
- * boundary (the fixture's step/start parallel).
+ * records named `plan` with recorded input set the wanted target (`off` →
+ * false, else true); `plan/mode` commits and clears it. `wanted` is exposed
+ * for the prompt boundary (the fixture's step/start parallel).
  */
 function foldPlan(log: readonly SessionEvent[]): { active: boolean; pending: boolean; wanted: boolean | null } {
   let active = false
@@ -700,7 +702,8 @@ function foldPlan(log: readonly SessionEvent[]): { active: boolean; pending: boo
     const item = event as unknown as { type: string; data?: Record<string, unknown> }
     if (item.type === 'command/run' && item.data?.['name'] === 'plan') {
       const args = item.data['args']
-      wanted = (typeof args === 'string' ? args : '').trim() !== 'off'
+      if (typeof args !== 'string') continue
+      wanted = args.trim() !== 'off'
     } else if (item.type === 'plan/mode') {
       active = item.data?.['active'] === true
       wanted = null
@@ -1007,9 +1010,11 @@ function projectionFramesOf(id: SessionId, log: readonly SessionEvent[], event:
       seq: event.seq,
     }]
   }
-  // The plan unit advances on its two folded event kinds.
+  // The plan unit advances on its two folded event kinds when the command
+  // lifecycle contains the input that represents a plan selection.
+  const commandData = event as unknown as { data: { name?: string; args?: unknown } }
   if (type === 'plan/mode' || (type === 'command/run'
-    && (event as unknown as { data: { name?: string } }).data.name === 'plan')) {
+    && commandData.data.name === 'plan' && typeof commandData.data.args === 'string')) {
     return [{
       type: 'session/projection',
       sessionId: id,
@@ -1325,6 +1330,16 @@ class FxInbox<F> implements StreamConn<F> {
  * @returns an ApiProxy backed entirely by in-memory state — no host process, no network.
  */
 export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
+  return createFixtureWorld(options).api
+}
+
+interface FixtureWorld {
+  readonly api: ApiProxy
+  readonly rpc: ClientConnectionRpc
+}
+
+/** Build the fixture's legacy API and Remote RPC faces over one state graph. */
+function createFixtureWorld(options: FixtureOptions): FixtureWorld {
   // The resident fixture sessions all carry history, so none of them is blank.
   const sessions: SessionSummary[] = options.empty ? [] : [
     { sessionId: sid('fx-alpha'), updatedAt: Date.now(), running: true, blank: false, cwd: '/tmp/fixture' },
@@ -1503,31 +1518,141 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
     return backscanGoal(log) as FxGoalProjection
   }
 
-  /** Shared CAS mutation path of the goal verbs (undefined next = invalid transition). */
-  const fxMutateGoal = (
-    request: RpcRequest<{ sessionId: SessionId; ref: { id: string; revision: number } }>,
-    ref: { id: string; revision: number },
-    next: (current: FxGoalProjection) => FxGoalProjection['goal'] | undefined,
-  ): Promise<RpcResponse<{ ref: { id: never; revision: number } }>> => {
-    const missing = requireSession(request)
+  type FxGoalRef = { id: string; revision: number }
+  type FxGoalView = FxGoalProjection['goal'] & {
+    roundsStarted: number
+    createdAt: number
+    updatedAt: number
+    activation: 'armed' | 'disarmed'
+  }
+
+  const goalFailure = <T>(message: string): RpcResult<T> => ({
+    ok: false,
+    error: { code: 'internal', message, details: {} },
+  })
+
+  const requireGoalSession = (id: SessionId): RpcResult<never> | undefined => (
+    summaryOf(id) === undefined
+      ? { ok: false, error: { code: 'session-not-found', message: `no session ${id}`, details: { sessionId: id } } }
+      : undefined
+  )
+
+  const goalView = (projection: FxGoalProjection): FxGoalView => ({
+    ...projection.goal,
+    roundsStarted: projection.roundsStarted,
+    createdAt: projection.createdAt,
+    updatedAt: projection.updatedAt,
+    activation: projection.goal.phase === 'active' ? 'armed' : 'disarmed',
+  })
+
+  /** Canonical fixture implementation of the generated Goal Remote contract. */
+  const goalRemotes = {
+    create(id: SessionId, request: { objective: string; maxGoalRounds?: number }): RpcResult<{ ref: FxGoalRef }> {
+      const missing = requireGoalSession(id)
+      if (missing !== undefined) return missing
+      const current = backscanGoal(logOf(id))
+      if (current !== null && current.goal.phase !== 'complete') {
+        return goalFailure(`goal "${current.goal.id}" already exists`)
+      }
+      const now = Date.now()
+      const projection = appendGoalChange(id, {
+        kind: 'goal/change', version: 1, operation: 'create',
+        goal: {
+          id: `fx-goal-${logOf(id).length}`,
+          revision: 1,
+          objective: request.objective,
+          phase: 'active',
+          maxGoalRounds: request.maxGoalRounds ?? 256,
+        },
+        roundsStarted: 0, createdAt: now, updatedAt: now,
+      })
+      return { ok: true, value: { ref: { id: projection.goal.id, revision: projection.goal.revision } } }
+    },
+    edit(id: SessionId, ref: FxGoalRef, request: { objective?: string; maxGoalRounds?: number }): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => ({
+        ...current.goal,
+        revision: current.goal.revision + 1,
+        ...request.objective === undefined ? {} : { objective: request.objective },
+        ...request.maxGoalRounds === undefined ? {} : { maxGoalRounds: request.maxGoalRounds },
+      }))
+    },
+    pause(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'active'
+          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'paused' }
+          : undefined
+      ))
+    },
+    resume(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'paused' || current.goal.phase === 'blocked' || current.goal.phase === 'active'
+          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'active' }
+          : undefined
+      ))
+    },
+    complete(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalView> {
+      return mutateGoal(id, ref, current => (
+        current.goal.phase === 'complete'
+          ? undefined
+          : { ...current.goal, revision: current.goal.revision + 1, phase: 'complete' }
+      ))
+    },
+    clear(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalRef> {
+      const resolved = resolveGoal(id, ref)
+      if (!resolved.ok) return resolved
+      const current = resolved.value
+      const tombstone = { id: current.goal.id, revision: current.goal.revision + 1 }
+      appendGoalChange(id, {
+        kind: 'goal/change', version: 1, operation: 'clear', cleared: tombstone, clearedAt: Date.now(),
+      })
+      return { ok: true, value: tombstone }
+    },
+  }
+
+  /** Resolve one current goal revision for a canonical Remote mutation. */
+  function resolveGoal(id: SessionId, ref: FxGoalRef): RpcResult<FxGoalProjection> {
+    const missing = requireGoalSession(id)
     if (missing !== undefined) return missing
-    const id = request.payload.sessionId
     const current = backscanGoal(logOf(id))
     if (current === null || current.goal.id !== ref.id || current.goal.revision !== ref.revision) {
-      return err(request, { code: 'internal', message: 'stale or missing goal revision', details: { goalCode: 'GOAL_STALE_REVISION' } })
+      return goalFailure('stale or missing goal revision')
     }
+    return { ok: true, value: current }
+  }
+
+  /** Shared CAS mutation path behind the canonical Remote verbs. */
+  function mutateGoal(
+    id: SessionId,
+    ref: FxGoalRef,
+    next: (current: FxGoalProjection) => FxGoalProjection['goal'] | undefined,
+  ): RpcResult<FxGoalView> {
+    const resolved = resolveGoal(id, ref)
+    if (!resolved.ok) return resolved
+    const current = resolved.value
     const goal = next(current)
     if (goal === undefined) {
-      return err(request, { code: 'internal', message: `invalid goal transition from "${current.goal.phase}"`, details: { goalCode: 'GOAL_INVALID_TRANSITION' } })
+      return goalFailure(`invalid goal transition from "${current.goal.phase}"`)
     }
     const projection = appendGoalChange(id, {
       kind: 'goal/change', version: 1,
       operation: goal.phase === current.goal.phase ? 'edit' : goal.phase === 'paused' ? 'pause' : goal.phase === 'active' ? 'resume' : 'complete',
       goal, roundsStarted: current.roundsStarted, createdAt: current.createdAt, updatedAt: Date.now(),
     })
-    return ok(request, { ref: { id: projection.goal.id as never, revision: projection.goal.revision } })
+    return { ok: true, value: goalView(projection) }
   }
 
+  const mapGoalResult = <T, U>(result: RpcResult<T>, map: (value: T) => U): RpcResult<U> => (
+    result.ok ? { ok: true, value: map(result.value) } : result
+  )
+
+  const goalRefResult = (result: RpcResult<FxGoalView>): RpcResult<{ ref: { id: never; revision: number } }> => (
+    mapGoalResult(result, view => ({ ref: { id: view.id as never, revision: view.revision } }))
+  )
+
+  const legacyGoalResponse = <P, T>(request: RpcRequest<P>, result: RpcResult<T>): Promise<RpcResponse<T>> => (
+    Promise.resolve({ rpcId: request.rpcId, result })
+  )
+
   /** At most one in-flight replay per session; cancel clears it. */
   const replays = new Map<SessionId, { timer: ReturnType<typeof setTimeout>; finish(aborted: boolean): void }>()
 
@@ -1773,7 +1898,7 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
     replays.set(id, { timer: setTimeout(tick, 80), finish })
   }
 
-  return {
+  const api: ApiProxy = {
     sessions: {
       list: request => ok(request, { items: [...sessions].sort((a, b) => b.updatedAt - a.updatedAt) }),
       search: (request, signal) => {
@@ -1975,6 +2100,9 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       models: request => ok(request, {
         current: modelTargets.get(request.payload.sessionId)
           ?? { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+        // The fixture's routes all serve; a surface exercising the blocked
+        // posture drives it through its own stub.
+        routable: true,
         groups: fixtureModelGroups(),
         failures: [],
       }),
@@ -2327,60 +2455,44 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       },
     },
     goals: {
-      // Mutation-only mirror of the host handlers: each verb CAS-checks the
-      // projected current goal, appends the whole-value change (the mux
-      // stream and projection frame ride the shared append path), and
-      // acknowledges with the new ref only.
-      create: (request) => {
-        const missing = requireSession(request)
-        if (missing !== undefined) return missing
-        const id = request.payload.sessionId
-        const current = backscanGoal(logOf(id))
-        if (current !== null && current.goal.phase !== 'complete') {
-          return err(request, { code: 'internal', message: `goal "${current.goal.id}" already exists`, details: { goalCode: 'GOAL_ALREADY_EXISTS' } })
-        }
-        const projection = appendGoalChange(id, {
-          kind: 'goal/change', version: 1, operation: 'create',
-          goal: { id: `fx-goal-${logOf(id).length}`, revision: 1, objective: request.payload.objective, phase: 'active', maxGoalRounds: request.payload.maxGoalRounds ?? 256 },
-          roundsStarted: 0, createdAt: Date.now(), updatedAt: Date.now(),
-        })
-        return ok(request, { ref: { id: projection.goal.id as never, revision: projection.goal.revision } })
-      },
-      edit: request => fxMutateGoal(request, request.payload.ref, current => ({
-        ...current.goal,
-        revision: current.goal.revision + 1,
-        ...request.payload.objective === undefined ? {} : { objective: request.payload.objective },
-        ...request.payload.maxGoalRounds === undefined ? {} : { maxGoalRounds: request.payload.maxGoalRounds },
-      })),
-      pause: request => fxMutateGoal(request, request.payload.ref, current => (
-        current.goal.phase === 'active'
-          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'paused' }
-          : undefined
-      )),
-      resume: request => fxMutateGoal(request, request.payload.ref, current => (
-        current.goal.phase === 'paused' || current.goal.phase === 'blocked' || current.goal.phase === 'active'
-          ? { ...current.goal, revision: current.goal.revision + 1, phase: 'active' }
-          : undefined
-      )),
-      complete: request => fxMutateGoal(request, request.payload.ref, current => (
-        current.goal.phase === 'complete'
-          ? undefined
-          : { ...current.goal, revision: current.goal.revision + 1, phase: 'complete' }
-      )),
-      clear: (request) => {
-        const missing = requireSession(request)
-        if (missing !== undefined) return missing
-        const id = request.payload.sessionId
-        const current = backscanGoal(logOf(id))
-        if (current === null || current.goal.id !== request.payload.ref.id || current.goal.revision !== request.payload.ref.revision) {
-          return err(request, { code: 'internal', message: 'stale or missing goal revision', details: { goalCode: 'GOAL_STALE_REVISION' } })
-        }
-        appendGoalChange(id, {
-          kind: 'goal/change', version: 1, operation: 'clear',
-          cleared: { id: current.goal.id, revision: current.goal.revision + 1 }, clearedAt: Date.now(),
-        })
-        return ok(request, { cleared: true as const })
-      },
+      // Compatibility face only: old API Proxy payloads and acknowledgements
+      // adapt to the canonical fixture Remote implementation above.
+      create: request => legacyGoalResponse(
+        request,
+        mapGoalResult(
+          goalRemotes.create(request.payload.sessionId, {
+            objective: request.payload.objective,
+            ...request.payload.maxGoalRounds === undefined ? {} : { maxGoalRounds: request.payload.maxGoalRounds },
+          }),
+          value => ({ ref: { id: value.ref.id as never, revision: value.ref.revision } }),
+        ),
+      ),
+      edit: request => legacyGoalResponse(
+        request,
+        goalRefResult(goalRemotes.edit(request.payload.sessionId, request.payload.ref, {
+          ...request.payload.objective === undefined ? {} : { objective: request.payload.objective },
+          ...request.payload.maxGoalRounds === undefined ? {} : { maxGoalRounds: request.payload.maxGoalRounds },
+        })),
+      ),
+      pause: request => legacyGoalResponse(
+        request,
+        goalRefResult(goalRemotes.pause(request.payload.sessionId, request.payload.ref)),
+      ),
+      resume: request => legacyGoalResponse(
+        request,
+        goalRefResult(goalRemotes.resume(request.payload.sessionId, request.payload.ref)),
+      ),
+      complete: request => legacyGoalResponse(
+        request,
+        goalRefResult(goalRemotes.complete(request.payload.sessionId, request.payload.ref)),
+      ),
+      clear: request => legacyGoalResponse(
+        request,
+        mapGoalResult(
+          goalRemotes.clear(request.payload.sessionId, request.payload.ref),
+          () => ({ cleared: true as const }),
+        ),
+      ),
     },
     events: {
       async *mux(_request, signal) {
@@ -2500,8 +2612,11 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       providers: request => ok(request, {
         providers: [
           { provider: 'deepseek-official', displayName: 'DeepSeek', settingsNs: 'llm-deepseek', settingsPath: [], active: true },
-          { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: true },
-          { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false },
+          { provider: 'openai', displayName: 'openai', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'openai'], active: true, declared: false },
+          { provider: 'anthropic', displayName: 'anthropic', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'anthropic'], active: false, declared: false },
+          // One hand-declared route, so a surface reading this fixture meets
+          // the tagged shape rather than only the shipped one.
+          { provider: 'acme-gateway', displayName: 'Acme Gateway', settingsNs: 'llm-pi-ai', settingsPath: ['providers', 'acme-gateway'], active: true, declared: true },
         ],
       }),
       models: request => ok(request, { groups: fixtureModelGroups(), failures: [] }),
@@ -2538,6 +2653,36 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
       return Promise.resolve({ accepted: true })
     },
   }
+
+  const rpc: ClientConnectionRpc = {
+    call(channel, endpoint, payload) {
+      if (channel !== '/api') {
+        return Promise.reject(new Error(`fixture connection RPC channel ${JSON.stringify(channel)} is unavailable`))
+      }
+      const args = (payload as {
+        args: {
+          agentId: SessionId
+          ref?: { id: string; revision: number }
+          request?: { objective?: string; maxGoalRounds?: number }
+        }
+      }).args
+      const sessionId = args.agentId
+      switch (endpoint) {
+        case 'goals/create': return Promise.resolve(goalRemotes.create(sessionId, {
+          objective: args.request?.objective as string,
+          ...args.request?.maxGoalRounds === undefined ? {} : { maxGoalRounds: args.request.maxGoalRounds },
+        }))
+        case 'goals/edit': return Promise.resolve(goalRemotes.edit(sessionId, args.ref as FxGoalRef, args.request ?? {}))
+        case 'goals/pause': return Promise.resolve(goalRemotes.pause(sessionId, args.ref as FxGoalRef))
+        case 'goals/resume': return Promise.resolve(goalRemotes.resume(sessionId, args.ref as FxGoalRef))
+        case 'goals/complete': return Promise.resolve(goalRemotes.complete(sessionId, args.ref as FxGoalRef))
+        case 'goals/clear': return Promise.resolve(goalRemotes.clear(sessionId, args.ref as FxGoalRef))
+        default:
+          return Promise.reject(new Error(`fixture connection RPC endpoint ${JSON.stringify(endpoint)} is unavailable`))
+      }
+    },
+  }
+  return { api, rpc }
 }
 
 /**
@@ -2549,10 +2694,14 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
  */
 export class FixtureApiClient extends AbstractApiClient {
   private readonly api: ApiProxy
+  /** Generic Remote caller backed by the same in-memory state as the legacy fixture API. */
+  readonly rpc: ClientConnectionRpc
 
   constructor() {
     super()
-    this.api = createFixtureApi(fixtureOptionsFromLocation())
+    const world = createFixtureWorld(fixtureOptionsFromLocation())
+    this.api = world.api
+    this.rpc = world.rpc
   }
 
   protected doFetch(): Promise<Response> {

packages/client/connection/src/client/index.ts

@@ -8,7 +8,9 @@ import type { IApiClient } from './api.ts'
 import { ConnectionController, type ConnectionConfig, type ConnectionSinks, type ConnectionState } from './connection.ts'
 import { FixtureApiClient } from './fixture.ts'
 import { WebApiClient } from './web-api-client.ts'
+import { createWebConnectionRpc } from './rpc.ts'
 import { isLoopbackHostname } from '../loopback-hostname.ts'
+import type { ClientConnectionRpc } from '../rpc.ts'
 
 // ---- Contract re-exports (browser-safe apiproxy channels + core types) ----
 export type {
@@ -36,6 +38,7 @@ export {
 // Connection loop types are public through ConnectionHandle.start; the
 // controller remains package-internal.
 export type { ConnectionConfig, ConnectionSinks, ConnectionState }
+export type { ClientConnectionRpc } from '../rpc.ts'
 
 
 /** Required services (none — this is the wire root). */
@@ -51,6 +54,8 @@ export interface ConnectionHandle {
   readonly api: IApiClient
   /** Whether the current page authority is loopback; non-browser contexts default to true. */
   readonly isLoopback: boolean
+  /** Generic logical RPC channels over the same Connection transport. */
+  readonly rpc: ClientConnectionRpc
   /**
    * Start the connect/pump/reconnect loop with the consumer's frame sinks.
    * One consumer owns the streams (the runtime object layer); a second call
@@ -69,11 +74,14 @@ export interface ConnectionHandle {
 export function apply(ctx: Context): void {
   const pageLocation = typeof location === 'undefined' ? undefined : location
   const fixture = pageLocation !== undefined && new URLSearchParams(pageLocation.search).has('fixture')
-  const api: IApiClient = fixture ? new FixtureApiClient() : new WebApiClient()
+  const fixtureClient = fixture ? new FixtureApiClient() : undefined
+  const api: IApiClient = fixtureClient ?? new WebApiClient()
+  const rpc = fixtureClient?.rpc ?? createWebConnectionRpc()
   let started = false
   const handle: ConnectionHandle = {
     api,
     isLoopback: pageLocation === undefined || isLoopbackHostname(pageLocation.hostname),
+    rpc,
     start(sinks, config) {
       if (started) throw new Error('connection: the stream loop is already owned by another consumer')
       started = true

packages/client/connection/src/client/random-uuid.ts

@@ -0,0 +1,14 @@
+/** Browser-safe UUID generation for client-side wire correlation. */
+
+/**
+ * Generate an RFC 4122 version 4 UUID without requiring a secure context.
+ * @returns a UUID backed by `crypto.getRandomValues()`, which browsers expose on insecure origins.
+ */
+export function randomUuid(): string {
+  const bytes = globalThis.crypto.getRandomValues(new Uint8Array(16))
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength)
+  view.setUint8(6, (view.getUint8(6) & 0x0f) | 0x40)
+  view.setUint8(8, (view.getUint8(8) & 0x3f) | 0x80)
+  const hex = Array.from(bytes, byte => byte.toString(16).padStart(2, '0')).join('')
+  return `${hex.slice(0, 8)}-${hex.slice(8, 12)}-${hex.slice(12, 16)}-${hex.slice(16, 20)}-${hex.slice(20)}`
+}

packages/client/connection/src/client/rpc.ts

@@ -0,0 +1,63 @@
+/** Browser caller for generic Connection unary RPC channels. */
+
+import {
+  RpcId,
+  serverResponseSchema,
+  type ClientRequest,
+} from '@deepseek-ai/dsh-host-apiproxy/api'
+import type { ClientConnectionRpc } from '../rpc.ts'
+import { randomUuid } from './random-uuid.ts'
+
+const INTERNAL_BASE = 'http://dsh.internal'
+const CHANNEL_PATTERN = /^\/[A-Za-z0-9._~-]+$/
+const ENDPOINT_SEGMENT_PATTERN = /^[A-Za-z0-9_$.-]+$/
+
+/**
+ * Create the browser-backed generic RPC caller.
+ * @returns caller that owns request correlation and response-envelope validation.
+ */
+export function createWebConnectionRpc(): ClientConnectionRpc {
+  return {
+    async call(channel, endpoint, payload, signal) {
+      assertTarget(channel, endpoint)
+      const rpcId = RpcId(randomUuid())
+      const message: ClientRequest = {
+        type: 'client-request',
+        rpcId,
+        method: endpoint,
+        payload,
+      }
+      const response = await globalThis.fetch(
+        new URL(`${channel}/${endpoint}`, resolveBase()),
+        {
+          method: 'POST',
+          headers: { 'content-type': 'application/json' },
+          body: JSON.stringify(message),
+          ...signal === undefined ? {} : { signal },
+        },
+      )
+      if (!response.ok) {
+        throw new Error(`transport failure for ${channel}/${endpoint}: HTTP ${response.status}`)
+      }
+      const full = serverResponseSchema.parse(await response.json())
+      if (full.rpcId !== rpcId) {
+        throw new Error(`rpcId mismatch for ${endpoint}: sent ${rpcId}, got ${full.rpcId}`)
+      }
+      return full.result
+    },
+  }
+}
+
+function resolveBase(): string {
+  const location = (globalThis as { location?: { origin?: string } }).location
+  return location?.origin !== undefined && location.origin !== 'null' ? location.origin : INTERNAL_BASE
+}
+
+function assertTarget(channel: string, endpoint: string): void {
+  const segments = endpoint.split('/')
+  if (!CHANNEL_PATTERN.test(channel)
+    || segments.some(segment =>
+      segment === '' || segment === '.' || segment === '..' || !ENDPOINT_SEGMENT_PATTERN.test(segment))) {
+    throw new Error(`connection: invalid RPC target ${JSON.stringify(`${channel}/${endpoint}`)}`)
+  }
+}

packages/client/connection/src/http-bridge.ts

@@ -5,6 +5,16 @@
 
 import type { IncomingMessage, ServerResponse } from 'node:http'
 
+/** Transport-independent request handler consumed by the Host HTTP bridge. */
+export interface FetchHandler {
+  /**
+   * Handle one standard Fetch request.
+   * @param request - request produced by the active transport bridge.
+   * @returns complete or streaming Fetch response.
+   */
+  fetch(request: Request): Promise<Response>
+}
+
 /**
  * Bridge one node:http request to the fetch-shaped handler (client close
  * aborts; SSE bodies stream out chunk by chunk).
@@ -12,7 +22,7 @@ import type { IncomingMessage, ServerResponse } from 'node:http'
  * @param res - node:http response the bridge writes and owns to completion.
  * @param apiHandler - fetch-shaped API carrier the request is dispatched to.
  */
-export async function bridge(req: IncomingMessage, res: ServerResponse, apiHandler: { fetch: typeof fetch }): Promise<void> {
+export async function bridge(req: IncomingMessage, res: ServerResponse, apiHandler: FetchHandler): Promise<void> {
   const abort = new AbortController()
   // Client-disconnect detection MUST hang off the response, not the request:
   // since Node 16, IncomingMessage 'close' fires as soon as the request body is

packages/client/connection/src/index.ts

@@ -7,15 +7,26 @@ import { toFetchHandler } from '@deepseek-ai/dsh-host-apiproxy'
 import { API_PATH, HOST_EVENTS_PATH, MUX_EVENTS_PATH } from './api-path.ts'
 import { bridge } from './http-bridge.ts'
 import { assertTrustedAuthority, isTrustedApiRequest } from './api-request-trust.ts'
+import { HostConnectionService } from './rpc-host.ts'
 import { rejectWebSocketUpgrade, WebSocketDownlinks } from './websocket-downlink.ts'
 
+export type {
+  ConnectionRpcAuthority,
+  ConnectionRpcEndpointMatcher,
+  ConnectionRpcHandler,
+  ConnectionRpcHandlerOptions,
+  HostConnectionHandle,
+  HostConnectionRpc,
+} from './rpc.ts'
+export { HostConnectionService } from './rpc-host.ts'
+
 export { API_PATH, HOST_EVENTS_PATH, MUX_EVENTS_PATH } from './api-path.ts'
 
 /** Stable Cordis plugin name. */
 export const name = 'client-connection'
 
-/** Services required before mounting the route. */
-export const inject = ['httpServer', 'apiProxy']
+/** Services required before providing Connection; API Proxy is an optional `/api` fallback. */
+export const inject = ['httpServer']
 
 /** Plugin config: the deployment's non-loopback serving authorities. */
 export interface ConnectionConfig {
@@ -83,49 +94,61 @@ export function apply(ctx: Context, config?: ConnectionConfig): void {
   // Config boundary: a malformed entry fails the load loudly here rather than
   // silently authorizing its hostname prefix at request time.
   for (const entry of trustedHosts) assertTrustedAuthority(entry)
-  const apiHandler = toFetchHandler(ctx.apiProxy)
-  const downlinks = new WebSocketDownlinks(ctx.apiProxy)
+  const connection = new HostConnectionService(ctx, trustedHosts)
+  const fetchHandler = connection.createSharedFetchHandler(API_PATH, {
+    async fetch(request) {
+      const pathname = new URL(request.url).pathname
+      const method = pathname.startsWith(`${API_PATH}/`)
+        ? pathname.slice(API_PATH.length + 1)
+        : undefined
+      if (method !== undefined
+        && PRIVILEGED_METHODS.has(method)
+        && !isTrustedApiRequest(request, [])) {
+        return new Response('forbidden', { status: 403 })
+      }
+      if (request.method === 'GET' && (pathname === MUX_EVENTS_PATH || pathname === HOST_EVENTS_PATH)) {
+        return new Response('upgrade required', {
+          status: 426,
+          headers: { connection: 'Upgrade', upgrade: 'websocket' },
+        })
+      }
+      const apiProxy = ctx.get('apiProxy')
+      if (apiProxy === undefined) return new Response('not found', { status: 404 })
+      return toFetchHandler(apiProxy).fetch(request)
+    },
+  })
   const route: WebRoute = {
     kind: 'prefix',
     path: API_PATH,
     handler: async (req, res) => {
-      const pathname = new URL(req.url ?? '/', 'http://dsh.internal').pathname
-      const method = pathname.startsWith(`${API_PATH}/`)
-        ? pathname.slice(API_PATH.length + 1)
-        : undefined
-      const allowed = method !== undefined && PRIVILEGED_METHODS.has(method)
-        ? isTrustedApiRequest(req, [])
-        : isTrustedApiRequest(req, trustedHosts)
-      if (!allowed) {
+      if (!isTrustedApiRequest(req, trustedHosts)) {
         res.writeHead(403)
         res.end('forbidden')
         return
       }
-      if (req.method === 'GET' && (pathname === MUX_EVENTS_PATH || pathname === HOST_EVENTS_PATH)) {
-        res.writeHead(426, { connection: 'Upgrade', upgrade: 'websocket' })
-        res.end('upgrade required')
-        return
-      }
-      await bridge(req, res, apiHandler)
+      await bridge(req, res, fetchHandler)
     },
   }
   ctx.effect(() => ctx.httpServer.register(route), 'client-connection: /api route')
-  const registerDownlink = (
-    path: string,
-    handle: WebUpgradeRoute['handler'],
-  ): void => {
-    ctx.effect(() => ctx.httpServer.registerUpgrade({
-      path,
-      handler: (req, socket, head) => {
-        if (!isTrustedApiRequest(req, trustedHosts)) {
-          rejectWebSocketUpgrade(socket)
-          return
-        }
-        return handle(req, socket, head)
-      },
-    }), `client-connection: ${path} WebSocket`)
-  }
-  ctx.effect(() => () => downlinks.close(), 'client-connection: WebSocket downlinks')
-  registerDownlink(MUX_EVENTS_PATH, (req, socket, head) => { downlinks.handleMux(req, socket, head) })
-  registerDownlink(HOST_EVENTS_PATH, (req, socket, head) => { downlinks.handleHost(req, socket, head) })
+  ctx.inject(['apiProxy'], (apiCtx) => {
+    const downlinks = new WebSocketDownlinks(apiCtx.apiProxy)
+    const registerDownlink = (
+      path: string,
+      handle: WebUpgradeRoute['handler'],
+    ): void => {
+      apiCtx.effect(() => apiCtx.httpServer.registerUpgrade({
+        path,
+        handler: (req, socket, head) => {
+          if (!isTrustedApiRequest(req, trustedHosts)) {
+            rejectWebSocketUpgrade(socket)
+            return
+          }
+          return handle(req, socket, head)
+        },
+      }), `client-connection: ${path} WebSocket`)
+    }
+    apiCtx.effect(() => () => downlinks.close(), 'client-connection: WebSocket downlinks')
+    registerDownlink(MUX_EVENTS_PATH, (req, socket, head) => { downlinks.handleMux(req, socket, head) })
+    registerDownlink(HOST_EVENTS_PATH, (req, socket, head) => { downlinks.handleHost(req, socket, head) })
+  })
 }

packages/client/connection/src/rpc-host.ts

@@ -0,0 +1,224 @@
+/** Host registry and HTTP adapter for generic Connection RPC channels. */
+
+import { Context, Service } from 'cordis'
+import type { WebRoute } from '@deepseek-ai/dsh-host-webserver'
+import {
+  clientRequestSchema,
+  RpcId,
+  type ClientRequest,
+  type RpcError,
+  type RpcErrorDetailsMap,
+  type RpcId as RpcIdType,
+  type ServerResponse as RpcServerResponse,
+} from '@deepseek-ai/dsh-host-apiproxy/api'
+import { bridge, type FetchHandler } from './http-bridge.ts'
+import { isTrustedApiRequest } from './api-request-trust.ts'
+import { API_PATH } from './api-path.ts'
+import type {
+  ConnectionRpcEndpointMatcher,
+  ConnectionRpcHandler,
+  ConnectionRpcHandlerOptions,
+  HostConnectionHandle,
+  HostConnectionRpc,
+} from './rpc.ts'
+
+const INVALID_REQUEST_RPC_ID = RpcId('invalid-request')
+const CHANNEL_PATTERN = /^\/[A-Za-z0-9._~-]+$/
+const ENDPOINT_SEGMENT_PATTERN = /^[A-Za-z0-9_$.-]+$/
+
+interface ConnectionRpcInterceptor {
+  readonly matches: ConnectionRpcEndpointMatcher
+  readonly fetchHandler: FetchHandler
+  readonly options: ConnectionRpcHandlerOptions
+}
+
+declare module 'cordis' {
+  interface Context {
+    /** Host Connection transport and RPC registrations. */
+    connection: HostConnectionHandle
+  }
+}
+
+/** Host Connection service whose channel registrations belong to the caller fiber. */
+export class HostConnectionService extends Service implements HostConnectionHandle {
+  private readonly interceptors = new Map<string, ConnectionRpcInterceptor>()
+
+  /**
+   * Provide the Host half over the active HTTP server.
+   * @param ctx - owning Connection plugin context.
+   * @param trustedHosts - deployment authorities accepted by trusted-host channels.
+   */
+  constructor(ctx: Context, private readonly trustedHosts: readonly string[]) {
+    super(ctx, 'connection')
+  }
+
+  /** Generic channel registry scoped to the Context reading this service. */
+  get rpc(): HostConnectionRpc {
+    const owner = this.ctx
+    return {
+      handle: (channel, handler, options) => this.register(owner, channel, handler, options),
+      intercept: (channel, matches, handler, options) =>
+        this.registerInterceptor(owner, channel, matches, handler, options),
+    }
+  }
+
+  /**
+   * Compose one shared-channel Fetch handler from its interceptor and fallback.
+   * @param channel - shared channel mounted by Connection.
+   * @param fallback - handler for endpoints not claimed by the interceptor.
+   * @returns Fetch handler that selects exactly one target for each request.
+   */
+  createSharedFetchHandler(
+    channel: '/api',
+    fallback: FetchHandler,
+  ): FetchHandler {
+    return {
+      fetch: (request) => {
+        const endpoint = endpointFromPath(channel, new URL(request.url).pathname)
+        const interceptor = this.interceptors.get(channel)
+        if (endpoint === undefined || interceptor === undefined || !interceptor.matches(endpoint)) {
+          return fallback.fetch(request)
+        }
+        if (interceptor.options.authority === 'loopback' && !isTrustedApiRequest(request, [])) {
+          return Promise.resolve(new Response('forbidden', { status: 403 }))
+        }
+        return interceptor.fetchHandler.fetch(request)
+      },
+    }
+  }
+
+  private register(
+    owner: Context,
+    channel: string,
+    handler: ConnectionRpcHandler,
+    options: ConnectionRpcHandlerOptions,
+  ): () => Promise<void> {
+    assertChannel(channel)
+    const trustedHosts = options.authority === 'loopback' ? [] : this.trustedHosts
+    const fetchHandler = rpcFetchHandler(channel, handler)
+    const route: WebRoute = {
+      kind: 'prefix',
+      path: channel,
+      handler: async (req, res) => {
+        if (!isTrustedApiRequest(req, trustedHosts)) {
+          res.writeHead(403)
+          res.end('forbidden')
+          return
+        }
+        await bridge(req, res, fetchHandler)
+      },
+    }
+    return owner.effect(
+      () => owner.httpServer.register(route),
+      `client-connection: ${channel} rpc channel`,
+    )
+  }
+
+  private registerInterceptor(
+    owner: Context,
+    channel: string,
+    matches: ConnectionRpcEndpointMatcher,
+    handler: ConnectionRpcHandler,
+    options: ConnectionRpcHandlerOptions,
+  ): () => Promise<void> {
+    if (channel !== API_PATH) {
+      throw new Error(`connection: invalid shared RPC channel ${JSON.stringify(channel)}`)
+    }
+    const interceptor: ConnectionRpcInterceptor = {
+      matches,
+      fetchHandler: rpcFetchHandler(channel, handler),
+      options,
+    }
+    return owner.effect(() => {
+      if (this.interceptors.has(channel)) {
+        throw new Error(`connection: shared RPC channel ${JSON.stringify(channel)} already has an interceptor`)
+      }
+      this.interceptors.set(channel, interceptor)
+      return () => {
+        this.interceptors.delete(channel)
+      }
+    }, `client-connection: ${channel} rpc interceptor`)
+  }
+}
+
+function rpcFetchHandler(
+  channel: string,
+  handler: ConnectionRpcHandler,
+): FetchHandler {
+  return {
+    async fetch(request: Request): Promise<Response> {
+      const endpoint = endpointFromPath(channel, new URL(request.url).pathname)
+      if (request.method !== 'POST' || endpoint === undefined) {
+        return new Response('not found', { status: 404 })
+      }
+
+      const mediaType = request.headers.get('content-type')?.split(';', 1)[0]?.trim().toLowerCase()
+      if (mediaType !== 'application/json') {
+        return new Response('content type must be application/json', { status: 415 })
+      }
+
+      let body: unknown
+      try {
+        body = await request.json()
+      } catch {
+        return new Response('body is not JSON', { status: 400 })
+      }
+
+      const envelope = clientRequestSchema.safeParse(body)
+      if (!envelope.success) {
+        return invalidEnvelopeResponse(body, envelope.error.issues)
+      }
+      const message: ClientRequest = envelope.data
+      if (message.method !== endpoint) {
+        return errorResponse(message.rpcId, {
+          code: 'bad-request',
+          message: `method ${JSON.stringify(message.method)} does not match endpoint ${JSON.stringify(endpoint)}`,
+          details: { issues: [] },
+        })
+      }
+
+      try {
+        const result = await handler(endpoint, message.payload, request.signal)
+        return fullResponse(message.rpcId, result)
+      } catch (error) {
+        return new Response(`handler failure: ${String(error)}`, { status: 500 })
+      }
+    },
+  }
+}
+
+function invalidEnvelopeResponse(body: unknown, issues: RpcErrorDetailsMap['bad-request']['issues']): Response {
+  const rawId = (body as { rpcId?: unknown } | null)?.rpcId
+  const rpcId = typeof rawId === 'string' ? RpcId(rawId) : INVALID_REQUEST_RPC_ID
+  return errorResponse(rpcId, {
+    code: 'bad-request',
+    message: 'invalid client-request message',
+    details: { issues },
+  })
+}
+
+function endpointFromPath(channel: string, pathname: string): string | undefined {
+  if (!pathname.startsWith(`${channel}/`)) return undefined
+  const endpoint = pathname.slice(channel.length + 1)
+  const segments = endpoint.split('/')
+  if (segments.some(segment =>
+    segment === '' || segment === '.' || segment === '..' || !ENDPOINT_SEGMENT_PATTERN.test(segment))) {
+    return undefined
+  }
+  return endpoint
+}
+
+function errorResponse(rpcId: RpcIdType, error: RpcError): Response {
+  return fullResponse(rpcId, { ok: false, error })
+}
+
+function fullResponse(rpcId: RpcIdType, result: RpcServerResponse['result']): Response {
+  const body: RpcServerResponse = { type: 'server-response', rpcId, result }
+  return Response.json(body)
+}
+
+function assertChannel(channel: string): void {
+  if (!CHANNEL_PATTERN.test(channel) || channel === '/api') {
+    throw new Error(`connection: invalid or reserved RPC channel ${JSON.stringify(channel)}`)
+  }
+}

packages/client/connection/src/rpc.ts

@@ -0,0 +1,77 @@
+/** Generic unary RPC contracts shared by the Host and Client Connection halves. */
+
+import type { RpcResult } from '@deepseek-ai/dsh-host-apiproxy/api'
+
+/** Trust fence applied before a Host RPC channel reaches its handler. */
+export type ConnectionRpcAuthority = 'trusted-host' | 'loopback'
+
+/** Registration policy for one logical RPC channel. */
+export interface ConnectionRpcHandlerOptions {
+  /** Browser authority accepted by every endpoint in this channel. */
+  readonly authority: ConnectionRpcAuthority
+}
+
+/** Handler invoked after Connection has decoded the transport envelope. */
+export type ConnectionRpcHandler = (
+  endpoint: string,
+  payload: unknown,
+  signal: AbortSignal,
+) => Promise<RpcResult<unknown>>
+
+/** Synchronous ownership test for one endpoint on a shared RPC channel. */
+export type ConnectionRpcEndpointMatcher = (endpoint: string) => boolean
+
+/** Host registry for logical RPC channels carried by the current transport. */
+export interface HostConnectionRpc {
+  /**
+   * Register one absolute channel prefix and its trust policy.
+   * @param channel - absolute logical channel such as `/rpc`.
+   * @param handler - decoded endpoint handler returning the existing RPC result shape.
+   * @param options - channel trust policy.
+   * @returns asynchronous disposer removing the channel and its physical route.
+   */
+  handle(
+    channel: string,
+    handler: ConnectionRpcHandler,
+    options: ConnectionRpcHandlerOptions,
+  ): () => Promise<void>
+
+  /**
+   * Intercept owned endpoints on the shared `/api` channel before its fallback.
+   * @param channel - reserved shared channel; currently `/api`.
+   * @param matches - synchronous endpoint ownership test.
+   * @param handler - decoded endpoint handler returning the existing RPC result shape.
+   * @param options - trust policy for every endpoint claimed by this interceptor.
+   * @returns asynchronous disposer removing the interceptor.
+   */
+  intercept(
+    channel: '/api',
+    matches: ConnectionRpcEndpointMatcher,
+    handler: ConnectionRpcHandler,
+    options: ConnectionRpcHandlerOptions,
+  ): () => Promise<void>
+}
+
+/** Host `ctx.connection` shape consumed by transport-independent adapters. */
+export interface HostConnectionHandle {
+  /** Generic RPC channel registry. */
+  readonly rpc: HostConnectionRpc
+}
+
+/** Client caller for logical RPC channels carried by the current transport. */
+export interface ClientConnectionRpc {
+  /**
+   * Call one endpoint through an already registered logical channel.
+   * @param channel - absolute logical channel such as `/api`.
+   * @param endpoint - channel-relative endpoint such as `goals/create`.
+   * @param payload - channel-owned request payload.
+   * @param signal - optional caller cancellation.
+   * @returns the existing RPC success/error result; correlation stays inside Connection.
+   */
+  call(
+    channel: string,
+    endpoint: string,
+    payload: unknown,
+    signal?: AbortSignal,
+  ): Promise<RpcResult<unknown>>
+}

packages/client/connection/tests/client-apply.spec.ts

@@ -203,4 +203,119 @@ describe('connection client apply', () => {
     expect(sockets).toHaveLength(1)
     expect(sockets[0]?.readyState).toBe(FakeWebSocket.CLOSED)
   })
+
+  it('carries RPC calls without requiring secure-context randomUUID', async () => {
+    ;(globalThis as Win).location = { hostname: 'localhost', search: '' }
+    vi.stubGlobal('crypto', {
+      getRandomValues(bytes: Uint8Array) {
+        return bytes.fill(0)
+      },
+    })
+    const handle = await mount()
+    const original = globalThis.fetch
+    const seen: { url: string; body: unknown }[] = []
+    globalThis.fetch = async (input: URL | RequestInfo, init?: RequestInit) => {
+      const url = typeof input === 'string' ? input : input instanceof URL ? input.href : input.url
+      if (typeof init?.body !== 'string') throw new TypeError('expected a JSON string request body')
+      const body = JSON.parse(init.body) as { rpcId: string }
+      seen.push({ url, body })
+      return Response.json({
+        type: 'server-response',
+        rpcId: body.rpcId,
+        result: { ok: true, value: { ref: 'goal-1' } },
+      })
+    }
+    try {
+      await expect(handle.rpc.call('/api', 'goals/create', { args: { agentId: 'agent-1' } }))
+        .resolves.toEqual({ ok: true, value: { ref: 'goal-1' } })
+    } finally {
+      globalThis.fetch = original
+      vi.unstubAllGlobals()
+    }
+    expect(seen).toHaveLength(1)
+    expect(seen[0]?.url).toBe('http://dsh.internal/api/goals/create')
+    expect(seen[0]?.body).toMatchObject({
+      type: 'client-request',
+      rpcId: '00000000-0000-4000-8000-000000000000',
+      method: 'goals/create',
+      payload: { args: { agentId: 'agent-1' } },
+    })
+  })
+
+  it('validates generic RPC transport failures, correlation, and targets', async () => {
+    ;(globalThis as Win).location = {
+      hostname: 'harness.example', search: '', origin: 'https://harness.example',
+    }
+    const handle = await mount()
+    const original = globalThis.fetch
+    const abort = new AbortController()
+    globalThis.fetch = vi.fn().mockResolvedValue(new Response('unavailable', { status: 503 }))
+    try {
+      await expect(handle.rpc.call('/api', 'goals/create', {}, abort.signal))
+        .rejects.toThrow('HTTP 503')
+      expect(globalThis.fetch).toHaveBeenCalledWith(
+        new URL('https://harness.example/api/goals/create'),
+        expect.objectContaining({ signal: abort.signal }),
+      )
+
+      ;(globalThis as Win).location = { hostname: 'localhost', search: '', origin: 'null' }
+      globalThis.fetch = vi.fn().mockResolvedValue(Response.json({
+        type: 'server-response',
+        rpcId: 'different-rpc',
+        result: { ok: true, value: null },
+      }))
+      await expect(handle.rpc.call('/api', 'goals/create', {})).rejects.toThrow('rpcId mismatch')
+      const fetch = vi.mocked(globalThis.fetch)
+      expect(fetch.mock.calls[0]?.[0]).toEqual(new URL('http://dsh.internal/api/goals/create'))
+      expect(fetch.mock.calls[0]?.[1]).not.toHaveProperty('signal')
+    } finally {
+      globalThis.fetch = original
+    }
+
+    for (const [channel, endpoint] of [
+      ['api2', 'goals/create'],
+      ['/api/path', 'goals/create'],
+      ['/api', ''],
+      ['/api', '.'],
+      ['/api', '..'],
+      ['/api', 'goals//create'],
+      ['/api', 'goals/create?unsafe'],
+    ] as const) {
+      await expect(handle.rpc.call(channel, endpoint, {})).rejects.toThrow('invalid RPC target')
+    }
+  })
+
+  it('carries Goal Remotes over the same state as the client-only fixture API', async () => {
+    ;(globalThis as Win).location = { hostname: 'localhost', search: '?fixture' }
+    const handle = await mount()
+    const created = await handle.rpc.call('/api', 'goals/create', {
+      args: { agentId: 'fx-alpha', request: { objective: 'fixture remote' } },
+    })
+    expect(created).toMatchObject({ ok: true, value: { ref: { revision: 1 } } })
+    if (!created.ok) throw new Error('fixture Goal create failed')
+    const ref = (created.value as { ref: { id: string; revision: number } }).ref
+    const edited = await handle.rpc.call('/api', 'goals/edit', {
+      args: { agentId: 'fx-alpha', ref, request: { objective: 'edited fixture remote' } },
+    })
+    expect(edited).toMatchObject({ ok: true, value: { objective: 'edited fixture remote', revision: 2 } })
+    const editedRef = { id: ref.id, revision: 2 }
+    const paused = await handle.rpc.call('/api', 'goals/pause', {
+      args: { agentId: 'fx-alpha', ref: editedRef },
+    })
+    expect(paused).toMatchObject({ ok: true, value: { phase: 'paused', activation: 'disarmed', revision: 3 } })
+    const resumed = await handle.rpc.call('/api', 'goals/resume', {
+      args: { agentId: 'fx-alpha', ref: { id: ref.id, revision: 3 } },
+    })
+    expect(resumed).toMatchObject({ ok: true, value: { phase: 'active', activation: 'armed', revision: 4 } })
+    const completed = await handle.rpc.call('/api', 'goals/complete', {
+      args: { agentId: 'fx-alpha', ref: { id: ref.id, revision: 4 } },
+    })
+    expect(completed).toMatchObject({ ok: true, value: { phase: 'complete', activation: 'disarmed', revision: 5 } })
+    await expect(handle.rpc.call('/api', 'goals/clear', {
+      args: { agentId: 'fx-alpha', ref: { id: ref.id, revision: 5 } },
+    })).resolves.toEqual({ ok: true, value: { id: ref.id, revision: 6 } })
+    await expect(handle.rpc.call('/other', 'goals/create', {})).rejects.toThrow(/channel.*unavailable/)
+    await expect(handle.rpc.call('/api', 'unknown/read', { args: { agentId: 'fx-alpha' } }))
+      .rejects.toThrow(/endpoint.*unavailable/)
+  })
 })

packages/client/connection/tests/fake-api.ts

@@ -59,6 +59,7 @@ export class FakeApiClient implements IApiClient {
 
   onModels: (payload: unknown) => Promise<RpcResponse<SessionModels>> = () => Promise.resolve(ok({
     current: { provider: 'deepseek-official', model: 'deepseek-chat' },
+    routable: true,
     groups: [],
     failures: [],
   }))

packages/client/connection/tests/http-bridge.spec.ts

@@ -28,7 +28,7 @@ describe('HTTP bridge abort', () => {
     let carrierSignal: AbortSignal | undefined
     const pending = bridge(request, response, {
       fetch: async (input) => {
-        const fetchRequest = input as Request
+        const fetchRequest = input
         carrierSignal = fetchRequest.signal
         resolveStarted()
         if (!fetchRequest.signal.aborted) {

packages/client/connection/tests/node-half.spec.ts

@@ -7,8 +7,9 @@ import { describe, expect, it } from 'vitest'
 import type { AddressInfo } from 'node:net'
 import type { IncomingMessage, ServerResponse } from 'node:http'
 import type { ApiProxy } from '@deepseek-ai/dsh-host-apiproxy/api'
+import { RpcId, type ClientRequest } from '@deepseek-ai/dsh-host-apiproxy/api'
 import type { HttpServerService, WebRoute, WebUpgradeRoute } from '@deepseek-ai/dsh-host-webserver'
-import { API_PATH, apply, HOST_EVENTS_PATH, inject, MUX_EVENTS_PATH } from '../src/index.ts'
+import { API_PATH, apply, HOST_EVENTS_PATH, inject, MUX_EVENTS_PATH, type HostConnectionHandle } from '../src/index.ts'
 
 /** Structural httpServer fake recording both route registries. */
 function fakeHttpServer(
@@ -17,6 +18,9 @@ function fakeHttpServer(
 ): Pick<HttpServerService, 'register' | 'registerUpgrade' | 'tapIndex' | 'port'> {
   return {
     register(route) {
+      if (routes.some(candidate => candidate.kind === route.kind && candidate.path === route.path)) {
+        throw new Error(`duplicate route ${route.path}`)
+      }
       routes.push(route)
       return () => { routes.splice(routes.indexOf(route), 1) }
     },
@@ -36,15 +40,32 @@ function fakeRequest(headers: Record<string, string>, url = `${API_PATH}/session
   return request
 }
 
+/** JSON POST carrying a complete client-request envelope. */
+function fakePost(headers: Record<string, string>, url: string, body: unknown): IncomingMessage {
+  const request = Readable.from([Buffer.from(JSON.stringify(body))]) as unknown as IncomingMessage
+  Object.assign(request, { url, method: 'POST', headers: { 'content-type': 'application/json', ...headers } })
+  return request
+}
+
+/** Raw POST for malformed-body and media-type boundary cases. */
+function fakeRawPost(headers: Record<string, string>, url: string, body: string): IncomingMessage {
+  const request = Readable.from([Buffer.from(body)]) as unknown as IncomingMessage
+  Object.assign(request, { url, method: 'POST', headers })
+  return request
+}
+
 /** Response recorder compatible with both the fence's short-circuit and the bridge. */
 function fakeResponse(): { response: ServerResponse; state: { status?: number; body?: unknown } } {
   const state: { status?: number; body?: unknown } = {}
+  const chunks: Buffer[] = []
   const response = Object.assign(new EventEmitter(), {
     writableEnded: false,
     writeHead(value: number) { state.status = value; return this },
-    write() { return true },
+    write(value: string | Uint8Array) { chunks.push(Buffer.from(value)); return true },
     end(this: { writableEnded: boolean }, value?: unknown) {
-      if (value !== undefined) state.body = value
+      if (typeof value === 'string' || value instanceof Uint8Array) chunks.push(Buffer.from(value))
+      else if (value !== undefined) throw new TypeError('fake response only accepts string or Uint8Array bodies')
+      if (chunks.length > 0) state.body = Buffer.concat(chunks).toString()
       this.writableEnded = true
       return this
     },
@@ -173,6 +194,211 @@ describe('connection node half', () => {
     expect(declared.state.status).toBe(404)
     await dispose()
   })
+
+  it('provides a disposable dedicated RPC channel without requiring apiProxy', async () => {
+    const ctx = new Context()
+    const routes: WebRoute[] = []
+    ctx.provide('httpServer', fakeHttpServer(routes, []) as HttpServerService)
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    await fiber.await()
+    expect(routes).toHaveLength(1)
+    expect(routes[0]).toMatchObject({ kind: 'prefix', path: API_PATH })
+
+    const connection = ctx.get('connection') as HostConnectionHandle
+    const calls: unknown[] = []
+    const remove = connection.rpc.handle('/rpc', async (endpoint, payload) => {
+      calls.push({ endpoint, payload })
+      return { ok: true, value: { accepted: true } }
+    }, { authority: 'trusted-host' })
+    const route = routes.find(candidate => candidate.path === '/rpc')
+    expect(route).toBeDefined()
+
+    const request: ClientRequest = {
+      type: 'client-request',
+      rpcId: RpcId('rpc-dedicated'),
+      method: 'goals/create',
+      payload: { args: { agentId: 'agent-1' } },
+    }
+    const result = fakeResponse()
+    await route!.handler(fakePost({ host: '127.0.0.1:3080' }, '/rpc/goals/create', request), result.response)
+    expect(result.state.status).toBe(200)
+    expect(JSON.parse(String(result.state.body))).toEqual({
+      type: 'server-response',
+      rpcId: 'rpc-dedicated',
+      result: { ok: true, value: { accepted: true } },
+    })
+    expect(calls).toEqual([{
+      endpoint: 'goals/create',
+      payload: { args: { agentId: 'agent-1' } },
+    }])
+
+    expect(() => connection.rpc.handle('/rpc', async () => ({ ok: true, value: null }), {
+      authority: 'trusted-host',
+    })).toThrow(/duplicate route/)
+    await remove()
+    expect(routes.map(candidate => candidate.path)).toEqual([API_PATH])
+    await fiber.dispose()
+    expect(routes).toHaveLength(0)
+  })
+
+  it('dispatches claimed /api endpoints before the API Proxy fallback and withdraws the claim', async () => {
+    const ctx = new Context()
+    const routes: WebRoute[] = []
+    ctx.provide('httpServer', fakeHttpServer(routes, []) as HttpServerService)
+    ctx.provide('apiProxy', {} as unknown as ApiProxy)
+    const fiber = ctx.plugin({ inject: [...inject], apply }, { trustedHosts: ['harness.example'] })
+    await fiber.await()
+    const connection = ctx.get('connection') as HostConnectionHandle
+    const calls: unknown[] = []
+    const remove = connection.rpc.intercept(
+      '/api',
+      endpoint => endpoint === 'goals/create',
+      async (endpoint, payload) => {
+        calls.push({ endpoint, payload })
+        return { ok: true, value: { accepted: true } }
+      },
+      { authority: 'trusted-host' },
+    )
+    expect(() => connection.rpc.intercept(
+      '/api',
+      () => true,
+      async () => ({ ok: true, value: null }),
+      { authority: 'trusted-host' },
+    )).toThrow('already has an interceptor')
+    expect(() => connection.rpc.intercept(
+      '/rpc' as '/api',
+      () => true,
+      async () => ({ ok: true, value: null }),
+      { authority: 'trusted-host' },
+    )).toThrow('invalid shared RPC channel')
+    const route = routes.find(candidate => candidate.path === API_PATH)!
+    const request: ClientRequest = {
+      type: 'client-request',
+      rpcId: RpcId('rpc-shared'),
+      method: 'goals/create',
+      payload: { args: { agentId: 'agent-1' } },
+    }
+
+    const claimed = fakeResponse()
+    await route.handler(fakePost({ host: '127.0.0.1:3080' }, '/api/goals/create', request), claimed.response)
+    expect(JSON.parse(String(claimed.state.body))).toEqual({
+      type: 'server-response',
+      rpcId: 'rpc-shared',
+      result: { ok: true, value: { accepted: true } },
+    })
+    expect(calls).toEqual([{
+      endpoint: 'goals/create',
+      payload: { args: { agentId: 'agent-1' } },
+    }])
+
+    const denied = fakeResponse()
+    await route.handler(fakePost({ host: 'other.example' }, '/api/goals/create', request), denied.response)
+    expect(denied.state).toMatchObject({ status: 403, body: 'forbidden' })
+    expect(calls).toHaveLength(1)
+
+    const unclaimed = fakeResponse()
+    await route.handler(fakeRequest({ host: '127.0.0.1:3080' }, '/api/session.list'), unclaimed.response)
+    expect(unclaimed.state.status).toBe(404)
+
+    await remove()
+    const withdrawn = fakeResponse()
+    await route.handler(fakePost({ host: '127.0.0.1:3080' }, '/api/goals/create', request), withdrawn.response)
+    expect(withdrawn.state.status).toBe(404)
+    expect(calls).toHaveLength(1)
+
+    const removeLoopback = connection.rpc.intercept(
+      '/api',
+      endpoint => endpoint === 'goals/create',
+      async () => ({ ok: true, value: null }),
+      { authority: 'loopback' },
+    )
+    const loopbackOnly = fakeResponse()
+    await route.handler(fakePost({ host: 'harness.example' }, '/api/goals/create', request), loopbackOnly.response)
+    expect(loopbackOnly.state.status).toBe(403)
+    await removeLoopback()
+    await fiber.dispose()
+  })
+
+  it('applies the configured trust fence and JSON envelope checks to generic channels', async () => {
+    const ctx = new Context()
+    const routes: WebRoute[] = []
+    ctx.provide('httpServer', fakeHttpServer(routes, []) as HttpServerService)
+    const fiber = ctx.plugin({ inject: [...inject], apply }, { trustedHosts: ['harness.example'] })
+    await fiber.await()
+    const connection = ctx.get('connection') as HostConnectionHandle
+    const remove = connection.rpc.handle('/rpc', async (endpoint) => {
+      if (endpoint === 'fail') throw new Error('handler broke')
+      return { ok: true, value: null }
+    }, {
+      authority: 'trusted-host',
+    })
+    const route = routes.find(candidate => candidate.path === '/rpc')!
+
+    const denied = fakeResponse()
+    await route.handler(fakePost({ host: 'other.example' }, '/rpc/goals/create', {}), denied.response)
+    expect(denied.state).toMatchObject({ status: 403, body: 'forbidden' })
+
+    const methodMismatch = fakeResponse()
+    await route.handler(fakePost({ host: 'harness.example' }, '/rpc/goals/create', {
+      type: 'client-request', rpcId: 'rpc-bad', method: 'other', payload: {},
+    }), methodMismatch.response)
+    expect(JSON.parse(String(methodMismatch.state.body))).toMatchObject({
+      rpcId: 'rpc-bad',
+      result: { ok: false, error: { code: 'bad-request' } },
+    })
+
+    for (const [request, status] of [
+      [fakeRequest({ host: 'harness.example' }, '/rpc/goals/create'), 404],
+      [fakePost({ host: 'harness.example' }, '/outside/goals/create', {}), 404],
+      [fakePost({ host: 'harness.example' }, '/rpc/goals//create', {}), 404],
+      [fakeRawPost({ host: 'harness.example' }, '/rpc/goals/create', '{}'), 415],
+      [fakeRawPost({ host: 'harness.example', 'content-type': 'text/plain' }, '/rpc/goals/create', '{}'), 415],
+      [fakeRawPost({ host: 'harness.example', 'content-type': 'application/json; charset=utf-8' }, '/rpc/goals/create', '{'), 400],
+    ] as const) {
+      const response = fakeResponse()
+      await route.handler(request, response.response)
+      expect(response.state.status).toBe(status)
+    }
+
+    for (const [body, rpcId] of [
+      [{ rpcId: 'retained-id' }, 'retained-id'],
+      [{ rpcId: 42 }, 'invalid-request'],
+      [null, 'invalid-request'],
+    ] as const) {
+      const response = fakeResponse()
+      await route.handler(fakePost({ host: 'harness.example' }, '/rpc/goals/create', body), response.response)
+      expect(JSON.parse(String(response.state.body))).toMatchObject({
+        rpcId,
+        result: { ok: false, error: { code: 'bad-request' } },
+      })
+    }
+
+    const failed = fakeResponse()
+    await route.handler(fakePost({ host: 'harness.example' }, '/rpc/fail', {
+      type: 'client-request', rpcId: 'rpc-fail', method: 'fail', payload: {},
+    }), failed.response)
+    expect(failed.state).toMatchObject({ status: 500, body: 'handler failure: Error: handler broke' })
+
+    expect(() => connection.rpc.handle('/api', async () => ({ ok: true, value: null }), {
+      authority: 'loopback',
+    })).toThrow('invalid or reserved RPC channel')
+    expect(() => connection.rpc.handle('api3', async () => ({ ok: true, value: null }), {
+      authority: 'loopback',
+    })).toThrow('invalid or reserved RPC channel')
+
+    const removeLoopback = connection.rpc.handle('/loopback', async () => ({ ok: true, value: null }), {
+      authority: 'loopback',
+    })
+    const loopbackRoute = routes.find(candidate => candidate.path === '/loopback')!
+    const publicResponse = fakeResponse()
+    await loopbackRoute.handler(fakePost({ host: 'harness.example' }, '/loopback/read', {
+      type: 'client-request', rpcId: 'rpc-public', method: 'read', payload: {},
+    }), publicResponse.response)
+    expect(publicResponse.state.status).toBe(403)
+    await removeLoopback()
+    await remove()
+    await fiber.dispose()
+  })
 })
 
 describe('connection node half over a real HTTP server', () => {

packages/client/runtime/package.json

@@ -24,7 +24,9 @@
   },
   "dshClient": {
     "inject": [
-      "@deepseek-ai/dsh-client-connection"
+      "@deepseek-ai/dsh-client-connection",
+      "@deepseek-ai/dsh-api-remotes",
+      "@deepseek-ai/dsh-typert-registry"
     ],
     "platform": "web",
     "immediately": true
@@ -47,11 +49,17 @@
   },
   "peerDependencies": {
     "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "@deepseek-ai/dsh-api-remotes": "^0.0.1",
+    "@deepseek-ai/dsh-type-meta": "^0.0.1",
+    "@deepseek-ai/dsh-typert-registry": "^0.0.1",
     "cordis": "^4.0.0-rc.7"
   },
   "devDependencies": {
     "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-api-remotes": "workspace:^",
     "@deepseek-ai/dsh-timeout": "workspace:^",
+    "@deepseek-ai/dsh-type-meta": "workspace:^",
+    "@deepseek-ai/dsh-typert-registry": "workspace:^",
     "@types/react": "~18.3.1",
     "cordis": "^4.0.0-rc.7"
   },

packages/client/runtime/src/client/agents/scope.ts

@@ -18,6 +18,12 @@
 import { Context as CordisContext } from 'cordis'
 import type { Context, Fiber } from 'cordis'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
+import type { TypeRTClientRemote, TypeRTRemoteScopeApi } from '@deepseek-ai/dsh-type-meta'
+
+/** Client Cordis Context carrying one Agent identity and its scoped Remote namespaces. */
+export type AgentContext = Omit<Context, 'remote'> & {
+  readonly remote: TypeRTClientRemote & TypeRTRemoteScopeApi<'agent'>
+}
 
 /** Context tag written by {@link createScope}. */
 const kScope = Symbol('dsh.client.scope')
@@ -29,7 +35,7 @@ export interface AgentScopeHandle {
    * through it (passing it as the dispatch subject routes to this agent's
    * tagged listeners plus every untagged one).
    */
-  ctx: Context
+  ctx: AgentContext
   /** Backing fiber (dispose tears down every scope-owned registration). */
   fiber: Fiber
 }
@@ -48,15 +54,16 @@ function agentScope(): void {}
  */
 export function createScope(ctx: Context, key: SessionId): AgentScopeHandle {
   const fiber = ctx.plugin(agentScope)
+  const scoped = fiber.ctx.extend({
+    [kScope]: key,
+    [CordisContext.filter](listenerCtx: Context): boolean {
+      const tag = scopeOf(listenerCtx)
+      return tag === undefined || tag === key
+    },
+  }) as AgentContext
   return {
     fiber,
-    ctx: fiber.ctx.extend({
-      [kScope]: key,
-      [CordisContext.filter](listenerCtx: Context): boolean {
-        const tag = scopeOf(listenerCtx)
-        return tag === undefined || tag === key
-      },
-    }),
+    ctx: scoped,
   }
 }
 

packages/client/runtime/src/client/contract/sessions.ts

@@ -12,6 +12,7 @@ import type {
   RpcResult, SessionId, SubagentAddress,
 } from '@deepseek-ai/dsh-client-connection/client'
 import type { HostObservable, SessionMaybeProvideInfo } from '@deepseek-ai/dsh-client-ui-slots'
+import type { AgentContext } from '../agents/scope.ts'
 import type { SessionSearchResultItem } from '../sessions/manager.ts'
 import type {
   SessionBinding, SessionListState, SessionProvideDescriptor,
@@ -19,6 +20,8 @@ import type {
 import type { SessionFace } from './session.ts'
 import type { ObservableSnapshot } from './store.ts'
 
+export type { AgentContext } from '../agents/scope.ts'
+
 /** The sessions-service face injected as `ctx.sessions`. */
 export interface ISessions {
   /** The useSessions standard feed (list rows + current selection; read face — writes stay inside the domain). */
@@ -95,7 +98,7 @@ export interface ISessions {
    * @param id - session id.
    * @returns scoped ctx, or undefined for a session neither listed nor already scoped.
    */
-  scope(id: SessionId): Context | undefined
+  scope(id: SessionId): AgentContext | undefined
   /**
    * Read the Agent scope tag off a context (service-method seam: fetch
    * bundles must reach scope resolution through ctx.sessions).

packages/client/runtime/src/client/index.ts

@@ -1,6 +1,8 @@
 /** Browser runtime services for slots, sessions, workspaces, and connection-stream delivery. */
 import type { Context } from 'cordis'
 import type { ConnectionHandle, SessionId } from '@deepseek-ai/dsh-client-connection/client'
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
+import type { TypeRTContext } from '@deepseek-ai/dsh-type-meta'
 import type { MaybeSnapshotSelectorHook, SnapshotSelectorHook } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotsService } from './slots.ts'
 import { SessionsService } from './sessions/service.ts'
@@ -26,7 +28,7 @@ export type { ISession, ProjectionsFace, SessionFace } from './contract/session.
 export type {
   ISessionHistory, SessionHistoryFace, SessionHistorySnapshot,
 } from './contract/session-history.ts'
-export type { ISessions } from './contract/sessions.ts'
+export type { AgentContext, ISessions } from './contract/sessions.ts'
 export type { IWorkspaces } from './contract/workspaces.ts'
 export type {
   SessionBinding, SessionListState, SessionProvideContribution, SessionProvideDescriptor, SessionSummary,
@@ -75,6 +77,13 @@ export type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 /** Client-side Cordis context after declaration merging. */
 export type ClientContext = Context
 
+declare module '@deepseek-ai/dsh-type-meta' {
+  interface TypeRTContextMap {
+    /** Client Agent scope identity; the agent and session share one wire id. */
+    agent: TypeRTContext<SessionId>
+  }
+}
+
 /** The conversation-snapshot selector hook (ConvViewProps/ToolRowProps take this). */
 export type UseConversationSession = SnapshotSelectorHook<ConversationSnapshot>
 
@@ -170,8 +179,8 @@ declare module 'cordis' {
   }
 }
 
-/** Required services: the wire handle mounted by the connection plugin. */
-export const inject = ['connection']
+/** Required services: the Remote root, wire handle, and Client TypeRT registry. */
+export const inject = ['remote', 'connection', 'typert']
 
 /** Mounts the browser runtime services and connection stream.
  * @param ctx - Client Cordis context.
@@ -180,6 +189,9 @@ export function apply(ctx: Context): void {
   ctx.plugin(SlotsService)
   const connection = ctx.get('connection') as ConnectionHandle
   const sessions = new SessionsService(ctx, connection.api)
+  ctx.typert.contexts.registerClient('agent', {
+    identity: candidate => sessions.scopeOf(candidate),
+  })
   const sessionHistory = new SessionHistoryService(ctx, connection.api)
   const workspaces = new WorkspacesService(ctx, connection.api, sessions)
   ctx.effect(

packages/client/runtime/src/client/sessions/conversation.ts

@@ -230,7 +230,10 @@ export interface CommandNode {
   commandId: CommandId
   /** Command name (run payload's structured field); null when the run fell outside the window. */
   name: string | null
-  /** Verbatim rawInput after the name, separator whitespace included (run payload); null when the run fell outside the window. */
+  /**
+   * Verbatim rawInput after the name, including separator whitespace; null
+   * when omitted by the command or when the run fell outside the window.
+   */
   args: string | null
   /** Settlement outcome (done payload); null while the command is still executing. */
   outcome: { kind: 'success' | 'error'; text?: string } | null

packages/client/runtime/src/client/sessions/service.ts

@@ -29,7 +29,7 @@ import type { SessionProjectionMap } from '@deepseek-ai/dsh-session-projection/t
 import type { SnapshotStore } from '../contract/store.ts'
 import { createSnapshotStore } from '../contract/store.ts'
 import type { SessionFace } from '../contract/session.ts'
-import type { ISessions } from '../contract/sessions.ts'
+import type { AgentContext, ISessions } from '../contract/sessions.ts'
 import { createScope, scopeOf as scopeTagOf } from '../agents/scope.ts'
 import { SessionManager } from './manager.ts'
 import type { SessionListPhase, SessionSearchResultItem, SubagentCatalogSnapshot } from './manager.ts'
@@ -127,7 +127,7 @@ export interface SessionBinding {
   readonly sessionId: SessionId
   /** The outward session face only — feature code never sees the concrete class. */
   readonly session: SessionFace
-  readonly ctx: Context
+  readonly ctx: AgentContext
 }
 
 // Scope primitives live in ../agents/scope.ts (the client mirror of host
@@ -182,7 +182,7 @@ function increasedForkTitle(title: string): string {
 
 interface ScopeRecord {
   fiber: Fiber
-  ctx: Context
+  ctx: AgentContext
   binding: SessionBinding
   /** The concrete Session for runtime-internal entry points (staging open()); the binding carries only the outward face. */
   session: Session
@@ -483,7 +483,7 @@ export class SessionsService implements ISessions {
    * @param id - session id (the agent identity — 1:1 same axis).
    * @returns scoped ctx, or undefined for a session neither listed nor already scoped.
    */
-  scope(id: SessionId): Context | undefined {
+  scope(id: SessionId): AgentContext | undefined {
     return this.resolve(id)?.ctx
   }
 

packages/client/runtime/src/client/sessions/transcript-adapter.ts

@@ -313,10 +313,10 @@ export class TranscriptAdapter {
     // enter the client program, so this wire consumer narrows structurally
     // (the same posture as tool/code-dispatch in session.ts).
     if ((event.type as string) === 'command/run') {
-      const data = event.data as unknown as { commandId: CommandId; name: string; args: string }
+      const data = event.data as unknown as { commandId: CommandId; name: string; args?: string }
       this.commandIdx.set(data.commandId, {
         kind: 'command', seq: event.seq, time: event.time,
-        commandId: data.commandId, name: data.name, args: data.args, outcome: null,
+        commandId: data.commandId, name: data.name, args: data.args ?? null, outcome: null,
       })
       return true
     }

packages/client/runtime/tests/client-apply.spec.ts

@@ -8,6 +8,7 @@ import { describe, expect, it } from 'vitest'
 import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
 import type { ConnectionSinks } from '@deepseek-ai/dsh-client-connection/client'
 import { SESSION_SEARCH_RESULT_LIMIT } from '@deepseek-ai/dsh-host-apiproxy/api'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
 import * as RuntimeClient from '../src/client/index.ts'
 import type { SessionsService } from '../src/client/sessions/service.ts'
 import type { WorkspacesService } from '../src/client/workspaces/service.ts'
@@ -22,17 +23,22 @@ interface Bench {
 
 async function mount(): Promise<Bench> {
   const ctx = new Context()
+  await ctx.plugin(TypertRegistry)
   const api = new FakeApiClient()
   const bench: Bench = { ctx, api, sinks: undefined, stopped: 0 }
   const handle: ConnectionHandle = {
     api,
     isLoopback: true,
+    rpc: {
+      call: () => Promise.reject(new Error('unexpected generic RPC call')),
+    },
     start: (sinks) => {
       bench.sinks = sinks
       return { stop: () => { bench.stopped += 1 } }
     },
   }
   ctx.reflect.provide('connection', handle)
+  ctx.reflect.provide('remote', {})
   await ctx.plugin(RuntimeClient).await()
   return bench
 }

packages/client/runtime/tests/event-script.ts

@@ -90,6 +90,8 @@ export const ev = {
     } }),
   commandRun: (seq: number, commandId: string, name: string, args = ''): SessionEvent =>
     at(seq, { type: 'command/run', data: { commandId, name, args, source: { kind: 'user' } } }),
+  commandRunWithoutInput: (seq: number, commandId: string, name: string): SessionEvent =>
+    at(seq, { type: 'command/run', data: { commandId, name, source: { kind: 'user' } } }),
   commandDone: (seq: number, commandId: string, kind: 'success' | 'error' = 'success', text?: string): SessionEvent =>
     at(seq, { type: 'command/done', data: { commandId, kind, ...text === undefined ? {} : { text } } }),
   /** A compaction's log-only `compact/summary` provenance record. */

packages/client/runtime/tests/fake-api.ts

@@ -73,6 +73,7 @@ export class FakeApiClient implements IApiClient {
 
   onModels: (payload: unknown) => Promise<RpcResponse<SessionModels>> = () => Promise.resolve(ok({
     current: this.defaultModel,
+    routable: true,
     groups: [{
       id: 'deepseek-official',
       name: 'DeepSeek',

packages/client/runtime/tests/transcript-adapter.spec.ts

@@ -432,6 +432,14 @@ describe('TranscriptAdapter', () => {
       expect(adapter.nodes()[0]).toMatchObject({ kind: 'command', name: 'goal', args: ' ship it', outcome: null })
     })
 
+    it('represents command input omitted by the host as null', () => {
+      const adapter = new TranscriptAdapter()
+      adapter.reset([ev.commandRunWithoutInput(0, 'cmd-private', 'feedback')])
+      expect(adapter.nodes()[0]).toMatchObject({
+        kind: 'command', name: 'feedback', args: null, outcome: null,
+      })
+    })
+
     it('soft-falls a done-only window into a node built from the done (cross-window cut)', () => {
       const adapter = new TranscriptAdapter()
       adapter.reset([ev.commandDone(80, 'cmd-3', 'error', '失败了')])

packages/client/runtime/tests/wire-events.spec.ts

@@ -6,6 +6,7 @@
 import { Context } from 'cordis'
 import { describe, expect, it } from 'vitest'
 import type { ConnectionHandle, ConnectionSinks } from '@deepseek-ai/dsh-client-connection/client'
+import TypertRegistry from '@deepseek-ai/dsh-typert-registry'
 import * as RuntimeClient from '../src/client/index.ts'
 import { FakeApiClient } from './fake-api.ts'
 
@@ -16,17 +17,22 @@ interface Bench {
 
 async function mount(): Promise<Bench> {
   const ctx = new Context()
+  await ctx.plugin(TypertRegistry)
   const api = new FakeApiClient()
   const bench: Bench = { ctx, sinks: undefined }
   const handle: ConnectionHandle = {
     api,
     isLoopback: true,
+    rpc: {
+      call: () => Promise.reject(new Error('unexpected generic RPC call')),
+    },
     start: (sinks) => {
       bench.sinks = sinks
       return { stop: () => {} }
     },
   }
   ctx.reflect.provide('connection', handle)
+  ctx.reflect.provide('remote', {})
   await ctx.plugin(RuntimeClient).await()
   return bench
 }

packages/client/runtime/tsconfig.json

@@ -20,6 +20,9 @@
     {
       "path": "../connection"
     },
+    {
+      "path": "../../api/remotes"
+    },
     {
       "path": "../../host/apiproxy"
     },
@@ -43,6 +46,12 @@
     },
     {
       "path": "../../support/invariants"
+    },
+    {
+      "path": "../../typert/type-meta"
+    },
+    {
+      "path": "../../typert/registry"
     }
   ],
   "exclude": [

packages/client/test-runtime/src/sessions.ts

@@ -3,7 +3,7 @@ import type { Context } from 'cordis'
 import { createScope, scopeOf, SessionProvideChannel } from '@deepseek-ai/dsh-client-runtime/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 import type {
-  ConversationSnapshot, ISessions, ObservableSnapshot, ProjectionsFace, SessionFace, SessionId,
+  AgentContext, ConversationSnapshot, ISessions, ObservableSnapshot, ProjectionsFace, SessionFace, SessionId,
   SessionListState, SessionProvideDescriptor, SessionSearchResultItem, SessionSummary, SnapshotStore,
   SubagentAddress,
 } from '@deepseek-ai/dsh-client-runtime/client'
@@ -134,7 +134,7 @@ interface SessionRecord {
   summary: SessionSummary
   snapshot: SnapshotStore<ConversationSnapshot>
   session: FixtureSession
-  scope: Context | undefined
+  scope: AgentContext | undefined
   scopeFiber: { dispose(): Promise<void> } | undefined
   /** Materialized standard-props bundle (identity-stable per session; invalidated on roster change). */
   provideInfo: SessionProvideInfo | undefined
@@ -144,7 +144,7 @@ interface SessionRecord {
 export interface TestSessionBinding {
   readonly sessionId: SessionId
   readonly session: FixtureSession
-  readonly ctx: Context
+  readonly ctx: AgentContext
 }
 
 /**
@@ -345,7 +345,7 @@ export class TestSessions implements ISessions {
    * @param id - session id.
    * @returns the scoped context, or undefined for unknown sessions.
    */
-  scope(id: string): Context | undefined {
+  scope(id: string): AgentContext | undefined {
     const record = this.records.get(id as SessionId)
     if (record === undefined) return undefined
     if (record.scope === undefined) {

packages/client/tsdown.client.ts

@@ -31,6 +31,9 @@ const CSS_VIRTUAL_SUFFIX = '.mjs'
  */
 export const INLINE_SAFE = /^@deepseek-ai\/dsh-(host-apiproxy|session|llm|tools|brand)(\/|$)/
 
+/** Generated descriptor/codec contribution with no shared runtime identity. */
+const GENERATED_REMOTE = /^@deepseek-ai\/dsh-[a-z0-9]+(?:-[a-z0-9]+)*\/remote$/
+
 /**
  * Documented TEMPORARY exemption, not a platform module (hence not in
  * platform.ts): the snapshot-store engine (createSnapshotStore/defineStore/
@@ -126,9 +129,9 @@ export function clientBundle(id: string, libEntry: readonly string[]): [UserConf
       resolveId(source: string) {
         if (!source.startsWith('@deepseek-ai/')) return null
         if (CLIENT_EXTERNALS.includes(source)) return null // platform module: external wins
-        if (INLINE_SAFE.test(source)) return null // wire/type layer: inline is the point
+        if (INLINE_SAFE.test(source) || GENERATED_REMOTE.test(source)) return null // wire contribution: inline is the point
         throw new Error(
-          `client bundle purity: "${source}" is not a platform module (CLIENT_EXTERNALS) and not an inline-safe wire layer — `
+          `client bundle purity: "${source}" is not a platform module (CLIENT_EXTERNALS), an inline-safe wire layer, or a generated /remote contribution — `
           + 'cross-plugin value imports are forbidden; collaborate through cordis services (type-only imports are erased and never reach this gate)',
         )
       },

packages/client/ui-conversation/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-conversation/README.md
-README.md: a75f25d8669cd688795842a655106e0e27bb7173
-README.zh.md: f0d744c31020730857d210d75749b907dbffca08
+README.md: 2d956f31a737d345393232aec9ce55b429e5b4d8
+README.zh.md: 087babe2ff878c69c668ad8fdf22b345f38ac204

packages/client/ui-conversation/README.md

@@ -8,6 +8,8 @@ Compaction renders as one collapsed row at the checkpoint's flow position withou
 
 The resident conversation shell survives no-session and session transitions. Without a current session it renders a disabled input bar; its root-scoped `conversation.hero.workspace` slot hosts the Workspace picker. Selecting a Workspace connects or reuses its Host-owned blank session and opens that session without replacing the shell. The root always owns the same scrollport and Hero/composer subtree; separate strict-session header and body outlets fill their regions when the first Session arrives, so the Workspace picker, scroll body, composer seat, and textarea retain their React and DOM identity. Blank sessions render the same composer body as active sessions, while the InputHub carries drafts across Workspace switches and mirrors them into the session store. In the active phase the session header shows only the current session title and view tabs as ordinary column chrome; fork lineage remains session data and is not projected into the header. Beneath it the scrollport (`data-conversation-scroll`) holds the flowing views and the sticky composer stack (stats dock + input docks + bar). That scrollport reserves its scrollbar gutter unconditionally, and a view opting into a composer overlay leaves it a scroll container, so the input card keeps one horizontal position whether or not the transcript scrolls and whichever view tab is shown ([decision](../../../.agents/notes/implemented/bug-fix/2026-08-04-composer-tab-gutter-reservation.md)). Wheel over the textarea chains: the capped draft scrolls locally until its edge, then forwards to that host.
 
+Another plugin can make one session's composer inert through `ctx.conversation.blocks`: it sets a block carrying its own localized reason, and the bar renders the same disabled textarea with that reason as the placeholder — the no-workspace posture, reused. The push direction is the constraint, not a preference: the plugins that know a session cannot send (ui-model, when no adapter serves its route) already depend on this package, so this package cannot read them. The model seat is the one control a block leaves live — every block this contract has is cleared by choosing a model, so locking it too would leave the composer asking for the only thing it prevents. A block is an affordance only; the Host refuses a prompt it cannot route regardless of what any client disables. The no-workspace state wins when both hold, because picking a workspace is the earlier prerequisite.
+
 The view ring is a slot: the strict session-body registration declares the session-scoped `'conversation.view'` list in its `children` table, that body renders the active entry through its renderSlot share (`only: <active id>`), and view tabs project from registration options (`id`/`order`/`label`). The chat view is this package's own entry; plugins such as ui-trajectory contribute tabs through `ctx.slots.register`, and each view owns its chrome.
 
 Approvals take over the composer through the chain this package declares: `ApprovalPanel` registers as a selector-routed `'conversation.composer'` entry (the ui-question pattern) and occupies the composer in place of the InputBar while an approval wait is pending (amber strip, justification headline, paired command line from the running call's args, one-shot refuse/allow). The `PendingApproval` domain face in `contract/slots.ts` owns the wire encoding — the `ApprovalResponsePayload` value with the audit correlation — over the runtime's `PendingWait` carrier; the broadcast `approval/resolved` frame settles the wait and restores the composer. The runtime manager projects every approval or question wait through `SessionSummary.pendingInteraction`, including sessions never instantiated; `ui-workspace` owns its sidebar presentation. Pending waits leave the message flow entirely: questions (ui-question) and approvals (ApprovalPanel) both answer through the composer takeover, so no display-only placeholder card remains. The composer's bottom-row Access seat mounts `PermissionSelect`, fed by the host-computed `permissions` projection through the standard-kit `useProjection` (key absence hides the chip); the chip opens a Menu-primitive dropdown whose kebab-case preset names render as title-case labels. Safe preset picks submit `/permission <preset>` immediately through the bar's injected `command` callback, while `danger-full-access` is presented as `Full access` and first opens an in-page Modal risk confirmation. The enabling action stays disabled until the user checks the acknowledgement; cancel, Escape, close, and mask click submit nothing.
@@ -18,7 +20,7 @@ Logged non-user messages render as a default-collapsed disclosure whose header n
 
 A Think row stays collapsed by default and exposes live reasoning throughput without expanding the chain of thought: while its reasoning block is the streaming tail, the summary switches from the settled first line to the latest non-blank line and its one-line scrollport follows each delta to the inline end. Expanding the row removes the moving summary and leaves the full reasoning in ordinary page flow, so page reading never fights an internal follower; settlement restores the stable first-line summary at the left edge ([decision](../../../.agents/notes/implemented/feature/2026-08-02-web-thinking-tail-scroll.md)).
 
-Generic tool rows classify the built-in bash, read, search, write, edit, and run_code names into dedicated visual variants. The filesystem variants render the edit icon and a path summary; that path is a hover-underline link that opens the file with the host OS default application (`host.openPath`, relative paths resolve against the session cwd). Tool rows are not whole-row click targets and do not open the details panel. The code variant summarizes with the model-authored `description` and expands to the program itself; its logged sub-dispatches render as always-visible nested rows through the SAME keyed toolview hole (custom registrations and the GenericToolCard fallback apply to sub-rows unchanged). Cordis lifecycle tools reuse those generic variants while presenting `Inspect`, `Mount temporary Plugin`, and `Unmount temporary Plugin` with a shared Cordis accent; mount keeps the code variant's expandable source rendering.
+Generic tool rows classify the built-in bash, read, search, write, edit, and run_code names into dedicated visual variants. The filesystem variants render the edit icon and a path summary; that path is an underlined link — it reads as one at rest, not only on hover, because a path styled like the surrounding prose is an affordance nobody finds — and it opens the file through the Host (`host.openPath`, relative paths resolve against the session cwd). A document a browser renders prefers the default browser where the Host platform can name one; Windows and WSL use the Windows registered association. The Host opens it on the Host's own machine: a client reached over a network sees nothing, which is the deliberate scope of this surface. Tool rows are not whole-row click targets and do not open the details panel. The code variant summarizes with the model-authored `description` and expands to the program itself; its logged sub-dispatches render as always-visible nested rows through the SAME keyed toolview hole (custom registrations and the GenericToolCard fallback apply to sub-rows unchanged). Cordis lifecycle tools reuse those generic variants while presenting `Inspect`, `Mount temporary Plugin`, and `Unmount temporary Plugin` with a shared Cordis accent; mount keeps the code variant's expandable source rendering.
 
 A tool call declaring the `terminal` render intent renders its command output inline, at both conversation render sites, through ui-primitives' `TerminalBlock`. `contract/terminal-card-model.ts` is the single derivation from the snapshot's `callView`/`resultView` pair, so the sites cannot disagree about a command, its cwd, or its exit status; it yields null — the generic path — for any other card tag, including one this client version does not know. Both sites therefore also show the card's run-state dot, which is the same `StateDot` semantic a tool row's leading icon carries, so a row and its own card always agree about one command's state. A multi-line command gets one prompt row per line, with the dot marking the call once on the first row — the exit status is the whole call's, so a dot per line would claim a per-line outcome bash does not report. The keyed `BashRow` carries the card below its summary row; tool rows are summary surfaces, so the card's copy and expand controls are the row's only interactions. The render-site fallback row keeps the card behind its existing expand control. Rows cap at `CHAT_TERMINAL_MAX_LINES` (8) against the panel's 16, which keeps the summary bounded; the panel stays the single-call reading surface. Inline output is licensed per render intent — the terminal and web cards, each with its own bound. A Bash execution failure that settles on the generic path instead exposes its original arguments and full error through the same bounded IN/OUT disclosure, while successful generic results such as a background-start acknowledgement remain summary-only ([decision](../../../.agents/notes/implemented/feature/2026-07-28-web-terminal-card.md)).
 
@@ -50,6 +52,8 @@ The chat stats line takes its token accounting from the generic token-meter `tok
 
 `src/client/` is organized by domain. `contract/` is the sole inter-domain shared face (`slots.ts` slot declarations and composed props, `views.ts` shared primitives, `tool-call-model.ts`); the `skeleton/`, `chat/`, and `toolviews/` directories import contract files and never each other. `apply.ts` is the only assembly point allowed to import all three domains. The `/client` export surface is the contract only — `apply`/`inject`, the two service classes, and the `contract/` type families; implementation components and the store factory stay internal and reach the page through apply's slot registrations.
 
+A finished turn ends with a turn-tail hole: the chat view renders the `conversation.chat.turnTail` list slot between the closing assistant's body and its IconActions, once per turn at the seq `assistantActionsSeqs` elects, dispatching `TurnTailOwnerProps` (the snapshot nodes, the closing seq, and the tool rows' `openFile`). This package owns only the hole; the produced-files row that fills it — derivation from the mutation tools' `locations`, the chip cap, the copy — lives in `@deepseek-ai/dsh-client-ui-deliverables`, so composing that plugin out of cordis.yml turns the surface off while the hole renders empty at zero cost.
+
 ## Model Experience
 
 None, as the conversation UI renders session history and streams in the browser; nothing here reaches a model request.

packages/client/ui-conversation/README.zh.md

@@ -8,6 +8,8 @@
 
 常驻会话壳会跨无会话与会话状态切换而保留。没有当前会话时，它会渲染禁用输入栏；其根作用域的 `conversation.hero.workspace` slot 承载 Workspace 选择器。选择 Workspace 会连接或复用由 Host 拥有的空白会话，并在不替换会话壳的情况下打开该会话。根组件始终拥有同一个滚动容器与 Hero／编辑器子树；首个会话到达时，彼此独立的严格会话页头和主体 outlet 只填入各自区域，因此 Workspace 选择器、滚动主体、编辑器 seat 与 textarea 都保留原有 React 和 DOM identity。空白会话与活跃会话渲染相同的输入区主体；InputHub 则在 Workspace 切换间携带草稿，并将草稿镜像到会话 store。活跃阶段，会话标题栏作为普通列 chrome，仅显示当前会话标题和视图标签；fork 谱系仍保留为会话数据，不投影到标题栏。其下滚动容器（`data-conversation-scroll`）承载流动排版的各视图与 sticky 编辑器栈（统计 dock＋输入区 dock＋输入栏）。该滚动容器无条件预留自己的滚动条槽，选用编辑器 overlay 的视图也仍把它保留为滚动容器，因此无论对话记录是否滚动、无论展示哪个视图标签，输入卡片都保持同一个横向位置（[决策](../../../.agents/notes/implemented/bug-fix/2026-08-04-composer-tab-gutter-reservation.md)）。textarea 上的滚轮会链式处理：限高草稿先在本地滚动，到达边缘后再转交给该宿主。
 
+别的插件可以经 `ctx.conversation.blocks` 让某个会话的编辑器变为惰性：它设置一个携带自己本地化理由的 block，输入栏就渲染同一个禁用的 textarea，并把该理由作为 placeholder——复用无 Workspace 时的那套姿态。推送方向是约束而非偏好：知道某会话发不出消息的插件（ui-model，在没有适配器服务其路由时）本就依赖本包，因此本包读不到它们。模型 seat 是 block 唯一保留可用的控件——这份契约里的每个 block 都靠选模型来解除，把它一起锁上会让编辑器索要它自己拦下的那件事。block 只是提示性设计；无论客户端禁用了什么，宿主都会拒绝一个它路由不了的 prompt。两者同时成立时以无 Workspace 姿态为准，因为选 Workspace 是更靠前的前提。
+
 视图环是一个 slot：严格会话主体注册在 `children` 表中声明 Session scope 的 `'conversation.view'` 列表，并通过自身的 renderSlot share 渲染活跃配置项（`only: <active id>`）；视图标签页则从注册选项（`id`／`order`／`label`）投影而来。聊天视图是该包自身的配置项；ui-trajectory 等插件通过 `ctx.slots.register` 贡献标签页，每个视图负责自己的 chrome。
 
 会话页头会在标题旁声明并渲染 Session scope 的 `'conversation.session.header.actions'` 列表，使功能插件无需进入骨架即可贡献控件。编辑器链的 currency 包含当前对话 `session`；ui-subagent 会选取 one-shot 或 parent 不可用的已寻址会话，并按原因显示只读文案，而普通 InputBar 会让所有已寻址 child 仅保留 Send，因为继续执行服务不公开逐 Activation 取消操作，`session.cancel` 也会绕过其所有权。
@@ -16,7 +18,7 @@
 
 Think 行默认保持折叠，并在不展开思维链的情况下暴露实时推理（reasoning）吞吐：当推理块是流式输出尾部时，摘要从结算后的首行切换到最新的非空行，其单行滚动区会随每个 delta 追到行内末端。展开该行会移除移动摘要，让完整推理进入普通页面流，因此页面阅读不会与内部跟随器争夺滚动；结算后恢复左对齐的稳定首行摘要（[决策](../../../.agents/notes/implemented/feature/2026-08-02-web-thinking-tail-scroll.md)）。
 
-通用工具行把内置的 bash、read、search、write、edit 和 run_code 名称归入专用视觉变体。文件系统变体会渲染 edit 图标和路径摘要；该路径是悬停下划线链接，点击后通过宿主操作系统的默认应用打开文件（`host.openPath`，相对路径相对会话 cwd 解析）。工具行不再是整行点击目标，也不会打开 details 面板。code 变体以模型撰写的 `description` 作摘要，展开后显示程序本身；其已记录的子调用经由同一个键控 toolview 空位渲染为始终可见的嵌套行（自定义注册和 GenericToolCard fallback 原样适用于子行）。Cordis 生命周期工具复用这些通用变体，同时以统一的 Cordis 强调色呈现 `Inspect`、`Mount temporary Plugin` 和 `Unmount temporary Plugin`；mount 行保留 code 变体的可展开源码渲染。
+通用工具行把内置的 bash、read、search、write、edit 和 run_code 名称归入专用视觉变体。文件系统变体会渲染 edit 图标和路径摘要；该路径是带下划线的链接——静止状态下就读得出是链接，而不只在悬停时，因为一条与周围正文同样样式的路径是没人会发现的交互——点击即经由 Host 打开文件（`host.openPath`，相对路径相对会话 cwd 解析）。浏览器能渲染的文档会在 Host 平台能够确定默认浏览器时优先使用它；Windows 与 WSL 则使用 Windows 注册的文件关联。Host 在它自己的机器上打开：经网络访问的客户端看不到任何东西，这是本交互面刻意划定的范围。工具行不再是整行点击目标，也不会打开 details 面板。code 变体以模型撰写的 `description` 作摘要，展开后显示程序本身；其已记录的子调用经由同一个键控 toolview 空位渲染为始终可见的嵌套行（自定义注册和 GenericToolCard fallback 原样适用于子行）。Cordis 生命周期工具复用这些通用变体，同时以统一的 Cordis 强调色呈现 `Inspect`、`Mount temporary Plugin` 和 `Unmount temporary Plugin`；mount 行保留 code 变体的可展开源码渲染。
 
 声明 `terminal` 渲染意图的工具调用，会在两个对话渲染点上都通过 ui-primitives 的 `TerminalBlock` 内联渲染其命令输出。`contract/terminal-card-model.ts` 是从快照的 `callView`／`resultView` 对推导的唯一位置，因此两个渲染点不可能在命令、cwd 或退出状态上产生分歧；对任何其他 card 标签——包括当前客户端版本不认识的标签——它返回 null，落回通用路径。因此两个渲染点也都显示卡片的运行状态点，它与工具行行首图标承载同一套 `StateDot` 语义，所以一行与其自身的卡片对同一条命令的状态总是一致。多行命令的每一行各占一个提示行，状态点只在第一行为整次调用标记一次——退出状态属于整次调用，因此每行一枚就会声称一个 bash 并不报告的逐行结果。键控的 `BashRow` 把卡片放在摘要行下方；工具行是摘要 surface，因此卡片的复制与展开控件是该行唯一的交互。渲染点兜底行则保持其既有的展开控件。行的上限是 `CHAT_TERMINAL_MAX_LINES`（8），面板为 16，因此摘要保持有界；面板仍是单次调用的阅读 surface。内联输出按渲染意图开放——终端卡片与 web 卡片各有自己的上限。若 Bash 执行失败时落在通用路径，则改用同样有界的 IN/OUT 展开区暴露原始参数和完整错误；后台启动确认等成功的通用结果仍只显示摘要（[决策](../../../.agents/notes/implemented/feature/2026-07-28-web-terminal-card.md)）。
 
@@ -50,6 +52,8 @@ Host 带 placement 的 `session/queue` 快照也会携带待处理 steering。Qu
 
 `src/client/` 按领域组织。`contract/` 是唯一的跨领域共享表层（`slots.ts` slot 声明与组合后的 props、`views.ts` 共享原语、`tool-call-model.ts`）；`skeleton/`、`chat/` 和 `toolviews/` 目录只导入 contract 文件，彼此之间从不互相导入。`apply.ts` 是唯一允许导入全部三个领域的组装点。`/client` 导出表层只包含契约：`apply`／`inject`、两个服务类和 `contract/` 类型家族；实现组件与 store factory 保持内部，经 apply 的 slot 注册抵达页面。
 
+完成的一轮以一个 turn-tail 空位收尾：chat 视图在收尾 assistant 正文与其 IconActions 之间渲染 `conversation.chat.turnTail` list slot，每轮一次、位于 `assistantActionsSeqs` 选出的 seq，派发 `TurnTailOwnerProps`（快照节点、收尾 seq，以及工具行的 `openFile`）。本包只拥有空位；填充它的产物行——从改写工具 `locations` 的派生、chip 上限、文案——都在 `@deepseek-ai/dsh-client-ui-deliverables` 里，因此把那个插件从 cordis.yml 中组合掉即可关闭该交互面，空位以零成本渲染为空。
+
 ## 模型体验
 
 无。会话 UI 在浏览器中渲染会话历史与流；这里没有任何内容进入模型请求。

packages/client/ui-conversation/src/client/apply.ts

@@ -15,6 +15,8 @@ import { resolveToolPath } from './contract/tool-call-model.ts'
 import { createChatStore } from './stores.ts'
 import { ConversationService } from './service.ts'
 import type { IConversation } from './service.ts'
+import { ComposerBlockRegistry } from './input/blocks.ts'
+import type { ComposerBlock } from './input/blocks.ts'
 import { InputHub } from './input/hub.ts'
 import { ComposerSubmissionPolicy } from './input/submission-policy.ts'
 import { InputBar } from './skeleton/InputBar.tsx'
@@ -54,6 +56,11 @@ const ABSENT_NOTICES = {
   getSnapshot: (): InputNotice | null => null,
   subscribe: () => () => {},
 }
+/** No session, therefore nothing to block; same one-identity rule as above. */
+const ABSENT_BLOCK = {
+  getSnapshot: (): ComposerBlock | undefined => undefined,
+  subscribe: () => () => {},
+}
 const EMPTY_LEXICON: ReadonlyMap<'/' | '@', readonly string[]> = new Map()
 const ABSENT_LEXICON = {
   getSnapshot: () => EMPTY_LEXICON,
@@ -133,6 +140,12 @@ export function apply(ctx: Context): void {
   // ctx.conversation.input by the service below sharing this one instance).
   const inputHub = new InputHub(ctx)
 
+  // The composer-block registry: a plugin that knows a session cannot send —
+  // ui-model, when no adapter serves the session's route — raises a block
+  // here, and the bar reads its own session's store. It cannot flow the other
+  // way: this package must not import the plugins that would know.
+  const composerBlocks = new ComposerBlockRegistry()
+
   // Decision 19/20: the input machine feeds every session-scope slot
   // component through the standard provide channel — the 'input' hook plus
   // the two public actions. Materialization is the shell creation trigger
@@ -167,6 +180,7 @@ export function apply(ctx: Context): void {
       'conversation.hero.workspace': { kind: 'single', scope: 'root' },
     },
     inject: (sessionId: SessionId | undefined): ConversationInjected => ({
+      hooks: { composerBlock: sessionId === undefined ? ABSENT_BLOCK : composerBlocks.storeFor(sessionId) },
       selectWorkspace: async (workspaceId) => {
         const nextId = await workspaces.connectWorkspace(workspaceId)
         if (sessionId !== undefined && nextId !== sessionId) {
@@ -303,6 +317,7 @@ export function apply(ctx: Context): void {
     children: {
       'conversation.chat.toolview': { kind: 'keyed', scope: 'session' },
       'conversation.chat.commandview': { kind: 'keyed', scope: 'session' },
+      'conversation.chat.turnTail': { kind: 'chain', scope: 'session' },
     },
     store: chatStore,
     inject: (sessionId: SessionId, actions: BoundActions<typeof chatStore>): ChatViewInjected => {
@@ -351,7 +366,7 @@ export function apply(ctx: Context): void {
   // registers itself as `conversation` and lives on its own child fiber.
   // Presentation registrants depend directly on their slot declarations;
   // this service remains only where conversation actions are required.
-  ctx.plugin(ConversationService, { input: inputHub })
+  ctx.plugin(ConversationService, { input: inputHub, blocks: composerBlocks })
 
   // The bash sample rides the same declaration seam, in third-party posture
   // (ToolRow-matching Bash · {description} chrome).

packages/client/ui-conversation/src/client/chat/AssistantMarkdown.tsx

@@ -11,10 +11,11 @@
 
 import { memo, useMemo } from 'react'
 import type { AssistantBlock } from '@deepseek-ai/dsh-client-runtime/client'
+import type { PropsRenderSlots } from '@deepseek-ai/dsh-client-ui-slots'
 import {
   IconThinkOutline14, JsonBlock, MarkdownText,
 } from '@deepseek-ai/dsh-client-ui-primitives'
-import type { ChatViewSlotProps } from '../contract/slots.ts'
+import type { ChatViewSlotProps, TurnTailOwnerProps } from '../contract/slots.ts'
 import { hasContentText } from './chat-flow.ts'
 import { MessageIconActions } from './MessageIconActions.tsx'
 import { ToolRow } from './ToolRow.tsx'
@@ -40,6 +41,8 @@ export interface AssistantMarkdownProps {
   seq?: number | undefined
   /** Fork the session through this finalized message's completed turn when eligible. */
   onFork?: ((seq: number) => void) | undefined
+  /** Turn-tail slot dispatch share and owner currency; omitted for a mid-turn assistant. */
+  turnTail?: (Pick<PropsRenderSlots<'conversation.chat.turnTail'>, 'renderSlotChain'> & { owner: TurnTailOwnerProps }) | undefined
   /** The message is not the transcript tail of a completed turn. */
   forkUnavailable?: boolean | undefined
   /** The owning view's locale seat, passed down as a plain prop. */
@@ -83,7 +86,7 @@ function ThinkRow({ text, running, t }: { text: string; running: boolean; t: Ass
 }
 
 export const AssistantMarkdown = memo(function AssistantMarkdown({
-  blocks, streaming, interrupted, time, runMs, ttftMs, tokensPerSecond, seq, onFork, forkUnavailable, t,
+  blocks, streaming, interrupted, time, runMs, ttftMs, tokensPerSecond, seq, onFork, forkUnavailable, turnTail, t,
 }: AssistantMarkdownProps) {
   // Stable per locale revision (t identity changes on switch): a fresh object
   // per render would rebuild MarkdownText's component table every chunk.
@@ -121,6 +124,7 @@ export const AssistantMarkdown = memo(function AssistantMarkdown({
         })}
         {interrupted && <span className={css.stopped}>{t('message.stopped')}</span>}
       </div>
+      {showActions && turnTail?.renderSlotChain('conversation.chat.turnTail', turnTail.owner)}
       {showActions && (
         <MessageIconActions
           text={copyText(blocks)}

packages/client/ui-conversation/src/client/chat/ChatView.tsx

@@ -335,7 +335,7 @@ function StreamingTail({ useSession, t }: {
  * render through the declared keyed hole's renderSlot share).
  */
 export function ChatView({
-  useSession, useSessions, useStore, renderSlot, sessionId, openFile, loadOlder, inspectCall, chatScroll, forkAt, t,
+  useSession, useSessions, useStore, renderSlot, renderSlotChain, sessionId, openFile, loadOlder, inspectCall, chatScroll, forkAt, t,
 }: ChatViewSlotProps) {
   const nodes = useSession(s => s.nodes)
   const turnTimings = useSession(s => s.turnTimings)
@@ -600,6 +600,9 @@ export function ChatView({
           seq={node.seq}
           onFork={forkAt}
           forkUnavailable={!branchSeqs.has(node.seq)}
+          turnTail={actionSeqs.has(node.seq)
+            ? { renderSlotChain, owner: { nodes, seq: node.seq, openFile } }
+            : undefined}
           t={t}
         />
       )

packages/client/ui-conversation/src/client/chat/ToolRow.module.css

@@ -103,7 +103,7 @@
   color: var(--dsw-alias-label-tertiary);
 }
 
-/* File-tool path: same geometry as .summary; hover underline + pointer. */
+/* File-tool path: same geometry as .summary, with a persistent link affordance. */
 .fileLink {
   flex: 1 1 auto;
   min-width: 0;
@@ -118,12 +118,16 @@
   text-align: left;
   font-size: 14px;
   line-height: 24px;
-  color: var(--dsw-alias-label-tertiary);
+  color: var(--dsw-alias-label-secondary);
+  text-decoration: underline;
+  text-decoration-color: var(--dsw-alias-label-quaternary);
+  text-underline-offset: 3px;
   cursor: pointer;
 }
 
 .fileLink:hover {
-  text-decoration: underline;
+  color: var(--dsw-alias-label-primary);
+  text-decoration-color: currentColor;
 }
 
 /* Error row's collapsed summary: the failure's first line in the error color. */

packages/client/ui-conversation/src/client/chat/ToolRow.tsx

@@ -23,7 +23,7 @@
 import { useEffect, useRef, useState, type KeyboardEvent, type MouseEvent, type ReactNode } from 'react'
 import clsx from 'clsx'
 import {
-  CodeBlock, DiffBlock, ReadBlock, SearchBlock, StateDot, TerminalBlock, WebBlock,
+  CodeBlock, DiffBlock, IconInspectOutline12, ReadBlock, SearchBlock, StateDot, TerminalBlock, WebBlock,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { WebBlockProps } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { TranslateNS } from '@deepseek-ai/dsh-client-ui-slots'
@@ -107,15 +107,6 @@ export interface ToolRowProps {
   inspect?: (() => void) | undefined
 }
 
-/** The Inspect pill's code glyph (user-supplied 16×16), fill follows text color. */
-function IconInspect() {
-  return (
-    <svg width="12" height="12" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden>
-      <path d="M16 8L10.8571 12V10.552L14.1383 8L10.8571 5.448V4L16 8ZM5.14286 10.552L1.86171 8L5.14286 5.448V4L0 8L5.14286 12V10.552ZM9.02514 4L5.59657 12H6.84057L10.2691 4H9.02514Z" fill="currentColor" />
-    </svg>
-  )
-}
-
 /** Leading-slot state substitution: the tool icon yields to the terminal state
  *  semantic (error = red, interrupted = amber halo). Running keeps the icon —
  *  the row sweep (CSS on data-state) carries the in-flight signal. */
@@ -332,7 +323,7 @@ export function ToolRow({
               className={css.inspectButton}
               onClick={inspect}
             >
-              <IconInspect />
+              <IconInspectOutline12 />
               Inspect
             </button>
           )}

packages/client/ui-conversation/src/client/contract/slots.ts

@@ -3,8 +3,9 @@ import type { ReactNode, RefObject } from 'react'
 import type {
   InjectFace, MaybeSnapshotSelectorHook, PropsLocale, PropsRenderSlots, PropsRuntime, PropsStore, SnapshotSelectorHook,
 } from '@deepseek-ai/dsh-client-ui-slots'
-import type { CommandNode, ConversationSnapshot, ObservableSnapshot, PendingInteraction, PendingWait, SessionId, ToolCallBlock, WorkspaceId } from '@deepseek-ai/dsh-client-runtime/client'
+import type { CommandNode, ConversationNode, ConversationSnapshot, ObservableSnapshot, PendingInteraction, PendingWait, SessionId, ToolCallBlock, WorkspaceId } from '@deepseek-ai/dsh-client-runtime/client'
 import type {} from '@deepseek-ai/dsh-client-ui-layout/client'
+import type { ComposerBlock } from '../input/blocks.ts'
 import type { ComposerKeyboard, EditSelection, InputActions, InputNotice, InputState } from '../input/contract.ts'
 import type { createChatStore } from '../stores.ts'
 import type { ComposerSubmitGesture, InputSubmitMode } from './composer-submission.ts'
@@ -46,6 +47,14 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
      * registration, and a domain upgrades by registering one row component.
      */
     'conversation.chat.commandview': { kind: 'keyed'; scope: 'session'; owner: CommandRowOwnerProps }
+    /**
+     * The chat view's turn-tail chain: rendered between a closing assistant
+     * message's body and its IconActions footer, once per turn (the render
+     * site elects the closing seq). Entries derive a match from the owner
+     * currency before mounting, so presentation components never mount only
+     * to return null; an all-declined chain renders nothing.
+     */
+    'conversation.chat.turnTail': { kind: 'chain'; scope: 'session'; owner: TurnTailOwnerProps }
     /**
      * The composer takeover chain: entries are selector-routed replacements
      * of the default InputBar. Declared by this package's 'conversation'
@@ -150,6 +159,24 @@ export interface ConvViewOwnerProps {
   onInspectDone?: () => void
 }
 
+/**
+ * Owner currency of the chat view's turn-tail hole: the finalized snapshot
+ * and the closing assistant's anchor. Registrants derive their own facts
+ * from the nodes (the owner never pre-chews a feature's vocabulary), and
+ * open files through the same opener the tool rows use.
+ */
+export interface TurnTailOwnerProps {
+  /** Finalized snapshot nodes in surface order. */
+  nodes: readonly ConversationNode[]
+  /** The closing assistant's seq — the anchor the tail renders under. */
+  seq: number
+  /**
+   * Open a filesystem path through the Host (tool-row semantics; the chat
+   * view resolves relative paths against the session cwd).
+   */
+  openFile: (path: string) => void
+}
+
 /**
  * Owner share of a per-view toolview slot: the call material the rendering
  * view supplies per row. Uniform across views — the trajectory/waterfall
@@ -223,6 +250,12 @@ export interface ConversationInjected {
    * When a blank session is already current, carry its draft to the target.
    */
   selectWorkspace: (workspaceId: WorkspaceId) => Promise<void>
+  /**
+   * Framework-bound sources. `composerBlock` is this session's block when a
+   * plugin raised one; the reason is the blocker's own localized copy, which
+   * the root renders as the inert composer's placeholder.
+   */
+  hooks: { composerBlock: ObservableSnapshot<ComposerBlock | undefined> }
 }
 
 /** Business callbacks injected into the strict Session body seat. */
@@ -258,6 +291,14 @@ export interface ConversationSessionHeaderInjected {
 export interface ComposerBarOwnerProps {
   /** Hero = empty-state centered card; composer = resident bottom bar. */
   variant: 'hero' | 'composer'
+  /**
+   * A block another plugin raised for this session: the bar refuses input and
+   * shows the blocker's reason as the placeholder, but — unlike `disabled` —
+   * keeps the model seat live. Every block this contract has is one the user
+   * clears by choosing a model, so locking that seat too would leave the
+   * composer telling them to do the one thing it prevents.
+   */
+  blocked?: { readonly reason: string }
   /**
    * Inert no-workspace state: the bar renders its normal DOM fully disabled
    * (textarea, add, send) so the workspace pick transitions in place instead
@@ -356,7 +397,7 @@ export type ConversationSlotProps =
     | 'conversation.input.left' | 'conversation.input.right'
     | 'conversation.hero.workspace'
   >
-  & ConversationInjected
+  & InjectFace<ConversationInjected>
   & PropsLocale<'conversation'>
 
 /** Full strict-session body props: per-session store, view ring, and draft mirror. */
@@ -480,7 +521,7 @@ export interface ChatViewInjected {
 
 /** Full chat-view component props: runtime & the declared toolview/commandview holes' render share & store & injected & locale seat. */
 export type ChatViewSlotProps =
-  PropsRuntime<'conversation.view'> & PropsRenderSlots<'conversation.chat.toolview' | 'conversation.chat.commandview'>
+  PropsRuntime<'conversation.view'> & PropsRenderSlots<'conversation.chat.toolview' | 'conversation.chat.commandview' | 'conversation.chat.turnTail'>
   & PropsStore<ChatStore> & ChatViewInjected & PropsLocale<'conversation'>
 
 /**

packages/client/ui-conversation/src/client/index.ts

@@ -17,7 +17,7 @@ export type {
   ComposerChainProps, ConversationInjected,
   ConversationSessionHeaderInjected, ConversationSessionInjected, ConversationSlotProps,
   ConvViewOwnerProps, ConvViewProps, DetailsInjected, DetailsSlotProps,
-  EmptyWorkspaceOwnerProps, ToolRowOwnerProps, ToolRowProps,
+  EmptyWorkspaceOwnerProps, ToolRowOwnerProps, ToolRowProps, TurnTailOwnerProps,
 } from './contract/slots.ts'
 // Export discipline: packages/client/AGENTS.md.
 

packages/client/ui-conversation/src/client/input/blocks.ts

@@ -0,0 +1,77 @@
+/**
+ * Composer blocks: the one way another plugin stops a session's input.
+ *
+ * The composer cannot read the plugins that would know — the dependency runs
+ * ui-model → ui-conversation, never back — so a blocker pushes here and the
+ * bar reads its own session's store. A block carries the localized reason it
+ * exists, because the plugin that raised it owns that copy; the composer only
+ * knows how to render an inert textarea with a placeholder, exactly as it
+ * already does for a session with no workspace.
+ *
+ * This is an affordance, not enforcement: the Host refuses a prompt it cannot
+ * route regardless of what any client disables.
+ */
+
+import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+import type { SessionId, SnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
+
+/** Why one session's composer is inert. */
+export interface ComposerBlock {
+  /**
+   * Localized placeholder replacing the composer's own, owned by the plugin
+   * that raised the block.
+   */
+  readonly reason: string
+}
+
+/** The registry face other plugins reach through `ctx.conversation.blocks`. */
+export interface ComposerBlocks {
+  /**
+   * Raise or clear this session's block. Idempotent: setting a block equal to
+   * the current one, or clearing an absent one, notifies nobody.
+   * @param sessionId - the session whose composer is affected.
+   * @param block - the block to raise, or undefined to clear it.
+   */
+  set(sessionId: SessionId, block: ComposerBlock | undefined): void
+  /**
+   * The store the composer subscribes to for one session. Created on first
+   * read from either side, so a blocker may raise a block before the session's
+   * composer mounts and the composer still sees it.
+   * @param sessionId - the session to observe.
+   * @returns that session's block store (undefined value = not blocked).
+   */
+  storeFor(sessionId: SessionId): SnapshotStore<ComposerBlock | undefined>
+  /**
+   * Drop one session's store. The session scope's disposer calls this; a
+   * blocker never needs to.
+   * @param sessionId - the session being torn down.
+   */
+  forget(sessionId: SessionId): void
+}
+
+/** The per-session composer-block registry (one instance per plugin fiber). */
+export class ComposerBlockRegistry implements ComposerBlocks {
+  private readonly stores = new Map<SessionId, SnapshotStore<ComposerBlock | undefined>>()
+
+  /** @inheritdoc */
+  set(sessionId: SessionId, block: ComposerBlock | undefined): void {
+    const store = this.storeFor(sessionId)
+    const current = store.getSnapshot()
+    if (current?.reason === block?.reason) return
+    store.set(block)
+  }
+
+  /** @inheritdoc */
+  storeFor(sessionId: SessionId): SnapshotStore<ComposerBlock | undefined> {
+    const existing = this.stores.get(sessionId)
+    if (existing !== undefined) return existing
+    const created = createSnapshotStore<ComposerBlock | undefined>(undefined)
+    this.stores.set(sessionId, created)
+    return created
+  }
+
+  /** @inheritdoc */
+  forget(sessionId: SessionId): void {
+    this.stores.delete(sessionId)
+  }
+}

packages/client/ui-conversation/src/client/locales.ts

@@ -44,7 +44,7 @@ export const zh = {
   'access.confirm.acknowledge': '我已了解风险，并愿意继续',
   'access.confirm.cancel': '取消',
   'access.confirm.enable': '启用 Full access',
-  'hero.headline': '开始构建吧',
+  'hero.headline': '探索未知之境',
   'hero.preview': '预览版',
   'hero.chooseWorkspace': '选择工作区',
   'session.hierarchy': '会话层级',
@@ -184,7 +184,7 @@ export const en = {
   'access.confirm.acknowledge': 'I understand the risks and want to continue',
   'access.confirm.cancel': 'Cancel',
   'access.confirm.enable': 'Enable Full access',
-  'hero.headline': 'Let\'s start building',
+  'hero.headline': 'Into the Unknown',
   'hero.preview': 'Preview',
   'hero.chooseWorkspace': 'Choose workspace',
   'session.hierarchy': 'Session hierarchy',

packages/client/ui-conversation/src/client/service.ts

@@ -14,6 +14,7 @@ import type { Context } from 'cordis'
 // method) instead of the standalone helper.
 import type { ISessions, SessionFace, SessionId } from '@deepseek-ai/dsh-client-runtime/client'
 import type { QueueAction, QueueItemId } from './contract/queue.ts'
+import type { ComposerBlocks } from './input/blocks.ts'
 import type { InputService } from './input/contract.ts'
 
 /**
@@ -24,6 +25,11 @@ import type { InputService } from './input/contract.ts'
 export interface IConversation {
   /** The per-session input machine registry (InputService face). */
   readonly input: InputService
+  /**
+   * The per-session composer-block registry: how a plugin the composer
+   * cannot import makes a session's input inert with its own reason.
+   */
+  readonly blocks: ComposerBlocks
   /**
    * Send a prompt into the caller scope's session (queued turn).
    * @param text - prompt text, sent verbatim as one text block.
@@ -53,16 +59,20 @@ export interface IConversation {
 export class ConversationService extends Service implements IConversation {
   /** The per-session input machine registry (InputService face, design §5.2). */
   readonly input: InputService
+  /** The per-session composer-block registry. */
+  readonly blocks: ComposerBlocks
 
   /**
    * @param ctx - owning root context (the plugin apply context; the service
    * registers itself and follows that fiber's lifetime).
-   * @param config - carries the InputService instance constructed by the
-   * plugin apply (the same InputHub the slot inject factories close over).
+   * @param config - carries the InputService and composer-block registry
+   * constructed by the plugin apply (the same instances the slot inject
+   * factories close over).
    */
-  constructor(ctx: Context, config: { input: InputService }) {
+  constructor(ctx: Context, config: { input: InputService; blocks: ComposerBlocks }) {
     super(ctx, 'conversation')
     this.input = config.input
+    this.blocks = config.blocks
   }
 
   /**

packages/client/ui-conversation/src/client/skeleton/ConversationRoot.tsx

@@ -13,7 +13,7 @@ import css from './ConversationRoot.module.css'
 export type ConversationRootProps = ConversationSlotProps
 
 export function ConversationRoot({
-  sessionId, useSession, useSessions, useWorkspaces, useInput,
+  sessionId, useSession, useSessions, useWorkspaces, useInput, useComposerBlock,
   renderSlot, renderSlotChain, selectWorkspace, t,
 }: ConversationRootProps) {
   const openState = useSession(s => s.openState)
@@ -24,6 +24,9 @@ export function ConversationRoot({
   const cwd = useSessions(s => sessionId === undefined ? undefined : s.byId[sessionId]?.cwd)
   const summaryBlank = useSessions(s => sessionId === undefined ? undefined : s.byId[sessionId]?.blank)
   const workspaces = useWorkspaces(s => s)
+  // A plugin this package cannot import (ui-model) says this session cannot
+  // send; its reason is already localized by whoever raised it.
+  const composerBlock = useComposerBlock(block => block)
 
   const [pickerOpen, setPickerOpen] = useState(false)
   const [pendingWorkspaceId, setPendingWorkspaceId] = useState<WorkspaceId | undefined>()
@@ -126,11 +129,20 @@ export function ConversationRoot({
   // bar is ONE session-maybe slot rendered unconditionally — inert is a prop,
   // not a different tree, so the textarea DOM survives the transition.
   const inert = sessionId === undefined || (hero && chipTitle === undefined)
+  // A raised block is the same inert posture with the blocker's own reason:
+  // one disabled textarea, never a second tree. The no-workspace state wins
+  // when both hold — picking a workspace is the earlier prerequisite.
+  const blocked = !inert && composerBlock !== undefined
   const inputBar = renderSlot('conversation.composer.bar', {
     variant: hero ? 'hero' : 'composer',
     ...(inert
       ? { disabled: true, placeholder: t('placeholder.workspace') }
-      : hero ? { placeholder: t('placeholder.hero') } : {}),
+      : blocked
+        // `blocked`, not `disabled`: the bar refuses input either way, but a
+        // block keeps the model seat live because choosing a model is how the
+        // user clears it.
+        ? { blocked: composerBlock, placeholder: composerBlock.reason }
+        : hero ? { placeholder: t('placeholder.hero') } : {}),
     overlay: renderSlot('conversation.input.overlay', {}),
     leftItems: zone === undefined ? null : renderSlot('conversation.input.left', zone),
     rightItems: zone === undefined ? null : renderSlot('conversation.input.right', zone),

packages/client/ui-conversation/src/client/skeleton/HeroShell.module.css

@@ -24,12 +24,12 @@
 }
 
 /* figma 34:10411: fish + title, gap 10, centered; 26/32 wt500. The preview
-   badge is a product addition outside that source and aligns to the title. */
+   badge is a product addition outside that source: a mono superscript pill
+   riding the title's top-right. */
 .headline {
   display: grid;
-  grid-template-columns: 34px auto;
+  grid-template-columns: 34px auto auto;
   column-gap: 10px;
-  row-gap: 4px;
   align-items: center;
   justify-content: center;
   font-size: 26px;
@@ -44,13 +44,17 @@
 }
 
 .previewBadge {
-  grid-row: 2;
-  grid-column: 2;
-  justify-self: start;
-  padding: 0 4px;
-  border-radius: 4px;
+  grid-row: 1;
+  grid-column: 3;
+  align-self: start;
+  margin-top: 2px;
+  margin-left: -3px;
+  padding: 1px 7px 0;
+  border: 1px solid var(--dsw-alias-interactive-bg-hover);
+  border-radius: 24px;
   background: var(--dsw-alias-state-business-tertiary);
-  color: var(--dsw-alias-label-primary);
+  color: var(--dsw-alias-label-primary-bluish);
+  font-family: var(--ds-font-family-code);
   font-size: 12px;
   line-height: 18px;
   font-weight: 500;

packages/client/ui-conversation/src/client/skeleton/InputBar.tsx

@@ -37,7 +37,8 @@ export type InputBarProps = ComposerBarProps
 export function InputBar({
   useSession, useInput, inputActions, keyboard, resolveSubmitMode, toggleCommandMenu, stop, command, t,
   renderSlot, useNotices, useLexicon, useMenuLauncher,
-  useProjection, sessionId, variant, disabled: inert = false, placeholder, accessory, overlay, leftItems, rightItems, footer,
+  useProjection, sessionId, variant, disabled: inert = false, blocked, placeholder,
+  accessory, overlay, leftItems, rightItems, footer,
 }: InputBarProps) {
   const input = useInput(s => s)
   const notice = useNotices(s => s)
@@ -86,8 +87,13 @@ export function InputBar({
   // inert no-workspace state, or the machine faces absent (no session). The
   // transient machine locks (adjudicating pending / submitting) render
   // read-only — the draft stays visible and focused, keystrokes drop.
-  const disabled = removed || inert || !live
+  const disabled = removed || inert || !live || blocked !== undefined
   const locked = disabled
+  // The model seat is the ONE control a block leaves live: every block this
+  // contract has is cleared by choosing a model, so locking it too would leave
+  // the composer asking for the only thing it prevents. The other reasons to
+  // be disabled do lock it — there is no session to choose a model for.
+  const modelSeatLocked = removed || inert || !live
   const machineBusy = input?.phase === 'adjudicating' || input?.phase === 'submitting'
 
   // Scroll the draft scrollport the minimum that brings `caret` into view — the
@@ -512,7 +518,7 @@ export function InputBar({
           </div>
           <div className={css.trailing}>
             {rightItems}
-            {renderSlot('conversation.input.model', { locked })}
+            {renderSlot('conversation.input.model', { locked: modelSeatLocked })}
             <ContextMeter useProjection={useProjection} t={t} />
             {/* {machineBusy && <span className={css.pending} data-input-pending aria-label="处理中" />} */}
             <Tooltip label={primaryLabel} side="top" delayMs={500}>

packages/client/ui-conversation/src/client/toolviews/bash-sample.tsx

@@ -17,7 +17,7 @@ import { useState, type KeyboardEvent } from 'react'
 import type { Context } from 'cordis'
 import clsx from 'clsx'
 import {
-  IconApiOutline14, IconChevronDownOutline14, StateDot, TerminalBlock,
+  IconApiOutline14, IconChevronDownOutline14, IconInspectOutline12, StateDot, TerminalBlock,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
 import type { ToolRowProps } from '../contract/slots.ts'
@@ -153,9 +153,7 @@ export function BashRow({ toolName, block, sessionId, useSessions, inspect, t }:
             )}
           {inspect !== undefined && (
             <button type="button" className={css.inspectButton} onClick={inspect}>
-              <svg width="12" height="12" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden>
-                <path d="M16 8L10.8571 12V10.552L14.1383 8L10.8571 5.448V4L16 8ZM5.14286 10.552L1.86171 8L5.14286 5.448V4L0 8L5.14286 12V10.552ZM9.02514 4L5.59657 12H6.84057L10.2691 4H9.02514Z" fill="currentColor" />
-              </svg>
+              <IconInspectOutline12 />
               Inspect
             </button>
           )}

packages/client/ui-conversation/tests/chat-view.spec.tsx

@@ -130,6 +130,8 @@ function makeHarness(init?: Partial<ConversationSnapshot>) {
   const chat = createChatStore().create()
   const renderSlot = ((_key: string, _owner: object, opts?: { fallback?: React.ReactNode }) =>
     opts?.fallback ?? null) as unknown as ChatViewSlotProps['renderSlot']
+  const renderSlotChain = ((_key: string, _owner: object, opts?: { fallback?: React.ReactNode }) =>
+    opts?.fallback ?? null) as unknown as ChatViewSlotProps['renderSlotChain']
   // SessionProvider seat arrives with the session-scope child declaration;
   // ChatView never invokes it (render-prop pass-through stub).
   const SessionProviderStub: ChatViewSlotProps['SessionProvider'] = ({ children }) => <>{children(SID)}</>
@@ -144,6 +146,7 @@ function makeHarness(init?: Partial<ConversationSnapshot>) {
     useStore: bindSnapshotSelector(chat),
     actions: chat.actions,
     renderSlot,
+    renderSlotChain,
     SessionProvider: SessionProviderStub,
     openDetails,
     openFile,
@@ -732,7 +735,8 @@ describe('ChatView', () => {
     // Count renderSlot invocations: the memo boundary holds when CallRow does
     // not re-render, so the row's renderSlot call count freezes during chunks.
     let rowRenders = 0
-    h.props.renderSlot = ((_key: string, _owner: object) => {
+    h.props.renderSlot = ((key: string, _owner: object) => {
+      if (key !== 'conversation.chat.toolview') return null
       rowRenders += 1
       return <div data-testid="counting-row" />
     })

packages/client/ui-conversation/tests/service-orchestration.spec.ts

@@ -7,6 +7,7 @@ import { Context } from 'cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { SlotTestRuntime } from '@deepseek-ai/dsh-client-test-runtime'
 import { ConversationService } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import { ComposerBlockRegistry } from '../src/client/input/blocks.ts'
 import { InputHub } from '../src/client/input/hub.ts'
 
 async function bench() {
@@ -23,6 +24,7 @@ async function bench() {
   // factories); the bench passes its own instance explicitly.
   const fiber = runtime.ctx.plugin(ConversationService, {
     input: new InputHub(runtime.ctx),
+    blocks: new ComposerBlockRegistry(),
   })
   await fiber.await()
   const root = runtime.ctx.get('conversation') as ConversationService
@@ -86,6 +88,7 @@ describe('ConversationService', () => {
     const bare = new Context()
     await bare.plugin(ConversationService, {
       input: new InputHub(bare),
+      blocks: new ComposerBlockRegistry(),
     }).await()
     const orphan = bare.get('conversation') as ConversationService
     await expect(orphan.send('x')).rejects.toThrow(/sessions service unavailable/)

packages/client/ui-conversation/tests/skeleton.spec.tsx

@@ -91,6 +91,8 @@ function mount(
     omitSummaryRow?: boolean
     /** Classify the selected child as a subagent instead of an ordinary fork. */
     summaryOrigin?: 'subagent'
+    /** A composer block another plugin raised for this session. */
+    composerBlock?: { reason: string }
   } = {},
 ) {
   const root = sid('root')
@@ -118,9 +120,14 @@ function mount(
   const stop = vi.fn()
   const open = vi.fn()
   const slotCalls: string[] = []
+  /** Owner share handed to the two composer tool-row seats, per render. */
+  const seatOwners: { key: string; owner: unknown }[] = []
   let pickerOwner: unknown
   const renderSlot = ((key: string, owner: object, opts?: { only?: string }) => {
     slotCalls.push(key)
+    if (key === 'conversation.input.model' || key === 'conversation.input.plan') {
+      seatOwners.push({ key, owner })
+    }
     if (key === 'conversation.hero.workspace') { pickerOwner = owner; return null }
     if (key === 'conversation.session.header') {
       return (
@@ -198,7 +205,12 @@ function mount(
           stop={stop}
           command={() => Promise.resolve(true)}
           t={t}
-          renderSlot={(() => null) as InputBarProps['renderSlot']}
+          renderSlot={((key: string, seatOwner: object) => {
+            // The bar's own seats: recorded so a case can assert what share
+            // each tool-row control received.
+            seatOwners.push({ key, owner: seatOwner })
+            return null
+          }) as InputBarProps['renderSlot']}
           {...bar}
         />
       )
@@ -224,6 +236,7 @@ function mount(
     useSessions: bindSnapshotSelector(sessions),
     useWorkspaces: bindSnapshotSelector(workspaces),
     useProjection: (() => undefined),
+    useComposerBlock: select => select(options.composerBlock),
     useInput,
     inputActions,
     renderSlot,
@@ -233,7 +246,7 @@ function mount(
   }
   const view = render(<ConversationRoot {...props} />)
   return {
-    view, chat, sink, retargetWorkspace, session, slotCalls, open,
+    view, chat, sink, retargetWorkspace, session, slotCalls, seatOwners, open,
     pickerOwner: () => pickerOwner,
     rerender: () => { view.rerender(<ConversationRoot {...props} />) },
   }
@@ -242,12 +255,44 @@ function mount(
 describe('Hero chrome', () => {
   it('renders the English preview badge through the hero locale seat', () => {
     const view = render(<HeroShell t={makeTranslate(en, commonEn)} />)
-    expect(view.getByText('Let\'s start building')).toBeTruthy()
+    expect(view.getByText('Into the Unknown')).toBeTruthy()
     expect(view.getByText('Preview')).toBeTruthy()
   })
 })
 
 describe('ConversationRoot resident composer', () => {
+  it('renders the composer inert with the blocker\u2019s own reason', () => {
+    const b = mount(conversationSnapshot(), undefined, undefined, {
+      composerBlock: { reason: 'select a model first' },
+    })
+    const box = b.view.getByRole('textbox') as HTMLTextAreaElement
+    // One disabled textarea with the blocker's placeholder, never a second
+    // tree: the DOM survives the block being raised and cleared.
+    expect(box.disabled).toBe(true)
+    expect(box.placeholder).toBe('select a model first')
+    fireEvent.keyDown(box, { key: 'Enter' })
+    expect(b.sink).not.toHaveBeenCalled()
+
+    // The model seat stays live. Locking it too would leave the composer
+    // asking for the one thing it prevents — every block this contract has is
+    // cleared by choosing a model.
+    const seat = (key: string) => b.seatOwners.filter(call => call.key === key).at(-1)?.owner
+    expect(seat('conversation.input.model')).toEqual({ locked: false })
+    expect(seat('conversation.input.plan')).toEqual({ locked: true })
+  })
+
+  it('lets the no-workspace posture win over a block', () => {
+    // Picking a workspace is the earlier prerequisite; naming a model first
+    // would send the user somewhere they cannot act yet.
+    const b = mount(conversationSnapshot({ composerPhase: 'blank' }), [], undefined, {
+      summaryBlank: true,
+      composerBlock: { reason: 'select a model first' },
+    })
+    const box = b.view.getByRole('textbox') as HTMLTextAreaElement
+    expect(box.disabled).toBe(true)
+    expect(box.placeholder).not.toBe('select a model first')
+  })
+
   it('keeps composer text in the machine, mirrors to the chat store, and submits through the sink', () => {
     const b = mount(conversationSnapshot())
     const box = b.view.getByRole('textbox')
@@ -306,7 +351,7 @@ describe('ConversationRoot resident composer', () => {
     const header = b.view.container.querySelector('header')
     expect(host).not.toBeNull()
     expect(header?.getAttribute('aria-hidden')).toBe('true')
-    expect(b.view.getByText('开始构建吧')).toBeTruthy()
+    expect(b.view.getByText('探索未知之境')).toBeTruthy()
     expect(b.view.getByText('预览版')).toBeTruthy()
     expect(b.view.queryByTestId('view-chat')).toBeNull()
     // The same machine-backed textarea is live in the hero, and the
@@ -330,7 +375,7 @@ describe('ConversationRoot resident composer', () => {
     const b = mount(conversationSnapshot({ composerPhase: 'blank', blank: true, openState: 'loading' }))
     const root = b.view.container.querySelector('[data-phase]')
     expect(root?.getAttribute('data-phase')).toBe('settling')
-    expect(b.view.queryByText('开始构建吧')).toBeNull()
+    expect(b.view.queryByText('探索未知之境')).toBeNull()
   })
 
   it('settling phase: a session the list has no row for settles conservatively', () => {
@@ -355,7 +400,7 @@ describe('ConversationRoot resident composer', () => {
     // blank the column for the history round-trip.
     const root = b.view.container.querySelector('[data-phase]')
     expect(root?.getAttribute('data-phase')).toBe('hero')
-    expect(b.view.getByText('开始构建吧')).toBeTruthy()
+    expect(b.view.getByText('探索未知之境')).toBeTruthy()
     expect(b.view.getByRole('textbox')).toBeTruthy()
   })
 
@@ -373,7 +418,7 @@ describe('ConversationRoot resident composer', () => {
     expect(after.value).toBe('kept across flip')
     expect(b.chat.store.getSnapshot().draft).toBe('kept across flip')
     expect(b.view.container.querySelector('[data-conversation-scroll]')?.contains(after)).toBe(true)
-    expect(b.view.queryByText('开始构建吧')).toBeNull()
+    expect(b.view.queryByText('探索未知之境')).toBeNull()
     expect(b.view.getByTestId('view-chat')).toBeTruthy()
   })
 

packages/client/ui-deliverables/README.i18n.yaml

@@ -0,0 +1,6 @@
+# Bilingual-pair consistency record (docs/i18n/README.md): the git blob hash of each
+# side as of the last confirmed-consistent state. Both languages carry equal authority;
+# after editing either side, bring the other along and re-record with:
+#   pnpm run verify-translation-pairing --write packages/client/ui-deliverables/README.md
+README.md: b8b0ea2ef1cbc9b18b905fc08b41278f403ef043
+README.zh.md: a16535b8a8d3625ca1cf90e88c6d9dca742d916b

packages/client/ui-deliverables/README.md

@@ -0,0 +1,21 @@
+# @deepseek-ai/dsh-client-ui-deliverables
+
+English | [中文](README.zh.md)
+
+Produced-files feature owner: registers the deliverables row a finished turn ends with into the chat view's `conversation.chat.turnTail` hole. All policy lives here; removing this plugin's line from cordis.yml removes the surface entirely, and the owning view renders an empty hole at zero cost.
+
+`producedForClosing` derives one turn's produced files from the tail hole's owner currency — the finalized snapshot nodes and the closing assistant's seq. The vocabulary is the mutation tools' own follow-along `locations`, never the closing prose: a produced file is listed whether or not the model remembered to name it. A mutation is recognized by render intent, not tool name — a diff card, or a generic card whose `kind` is `edit` (the shape `str_replace_editor`'s insert presents) — so a new mutation tool joins by declaring what it does. Reads, deletes, and failed calls contribute nothing; a path appears once per turn in first-seen order; accumulation resets on the turn boundary, so a turn that mutates and then ends without content text cannot spill into the next turn's row.
+
+`ProducedFiles` renders the row between the closing message's body and its IconActions footer: a quiet label, up to six chips (basename text, full path as the `title`), and an explicit remainder count past the cap. Each chip opens through the owner-supplied `openFile` — the same Host opener the tool rows use, with the chat view resolving relative paths against the session cwd. Design rationale: the [workspace file links Agent Note](../../../.agents/notes/implemented/feature/2026-07-31-web-workspace-file-links.md).
+
+## Model Experience
+
+None, as the row is a pure client derivation over already-logged tool metadata and nothing here reaches a model request.
+
+#### KV Cache effect
+
+None; this package neither assembles nor sends provider requests.
+
+## Known Limitations and Deferred Work
+
+- **Prose mentions stay inert.** An inline-code file name in the closing message does not open the file yet; linking it to the same `locations` vocabulary is the stacked follow-up.

packages/client/ui-deliverables/README.zh.md

@@ -0,0 +1,21 @@
+# @deepseek-ai/dsh-client-ui-deliverables
+
+[English](README.md) | 中文
+
+产物文件的功能属主：把"完成的一轮以其产出文件收尾"的产物行注册进 chat 视图的 `conversation.chat.turnTail` 空位。全部策略都在本包内；从 cordis.yml 中删去本插件那一行即可整体移除该交互面，属主视图以零成本渲染一个空的空位。
+
+`producedForClosing` 从 tail 空位的 owner 通货——定稿的快照节点与收尾 assistant 的 seq——推导一轮产出的文件。词表是改写工具自身的跟随 `locations`，绝不是收尾正文：无论模型是否记得点名，产出文件都会被列出。改写按渲染意图识别而非工具名——diff 卡片，或 `kind` 为 `edit` 的 generic 卡片（即 `str_replace_editor` 的 insert 所呈现的形状）——因此新的改写工具靠声明自己做了什么加入。read、删除与失败的调用不贡献任何条目；同一路径在一轮内按首见顺序只出现一次；累积在 turn 边界重置，因此一轮若先改写文件、随后没有正文内容就结束，不会溢进下一轮的行里。
+
+`ProducedFiles` 在收尾消息正文与其 IconActions 之间渲染该行：一个安静的标签、至多六枚 chip（文本为文件名，完整路径作为 `title`），超出上限则显示一个明确的剩余计数。每枚 chip 经由 owner 提供的 `openFile` 打开——与工具行相同的 Host 打开器，chat 视图会把相对路径按会话 cwd 解析。设计原理：[workspace 文件链接 Agent Note](../../../.agents/notes/implemented/feature/2026-07-31-web-workspace-file-links.md)。
+
+## 模型体验
+
+无。该行是对已记录工具元数据的纯客户端派生，这里没有任何内容进入模型请求。
+
+#### KV Cache 影响
+
+无；该包既不组装也不发送提供方请求。
+
+## 已知限制与暂缓事项
+
+- **正文提及仍是死文本。**收尾消息里以行内代码写出的文件名尚不能点击打开；把它接到同一份 `locations` 词表是 stacked 的后续工作。

packages/client/ui-deliverables/package.json

@@ -0,0 +1,65 @@
+{
+  "name": "@deepseek-ai/dsh-client-ui-deliverables",
+  "description": "Produced-files turn tail: the deliverables row a finished turn ends with",
+  "version": "0.0.1",
+  "private": true,
+  "type": "module",
+  "main": "lib/index.js",
+  "types": "lib/types/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./lib/types/index.d.ts",
+      "default": "./lib/index.js"
+    },
+    "./invariant": {
+      "types": "./lib/types/invariant.d.ts",
+      "default": "./lib/invariant.js"
+    },
+    "./client": {
+      "types": "./lib/types/client/index.d.ts",
+      "default": "./lib/client.js"
+    },
+    "./src/*": "./src/*",
+    "./package.json": "./package.json"
+  },
+  "dshClient": {
+    "inject": [
+      "@deepseek-ai/dsh-client-locale",
+      "@deepseek-ai/dsh-client-runtime",
+      "@deepseek-ai/dsh-client-ui-conversation"
+    ],
+    "platform": "web"
+  },
+  "scripts": {
+    "bundle": "tsdown",
+    "watch": "tsdown --watch"
+  },
+  "license": "BSD-3-Clause",
+  "dependencies": {
+    "react": "^18.2.0"
+  },
+  "peerDependencies": {
+    "@deepseek-ai/dsh-client-locale": "^0.0.1",
+    "@deepseek-ai/dsh-client-runtime": "^0.0.1",
+    "@deepseek-ai/dsh-client-ui-conversation": "^0.0.1",
+    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
+    "@deepseek-ai/dsh-invariants": "^0.0.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "devDependencies": {
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-conversation": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@types/react": "~18.3.1",
+    "cordis": "^4.0.0-rc.7"
+  },
+  "files": [
+    "lib/index.js",
+    "lib/invariant.js",
+    "lib/client.js",
+    "lib/types/**/*.d.ts"
+  ]
+}

packages/client/ui-deliverables/src/client/ProducedFiles.module.css

@@ -0,0 +1,44 @@
+/* Turn-tail produced-files row: a quiet label followed by wrapping file chips.
+   Sits between the assistant body and its IconActions footer, so it reads as
+   part of the answer rather than as another tool row. */
+
+.root {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 8px;
+  margin-top: 16px;
+  font-size: 13px;
+  line-height: 22px;
+}
+
+.label {
+  color: var(--dsw-alias-label-tertiary);
+}
+
+/* One produced file. A link by behavior (it opens the file), a chip by shape:
+   full paths are long and several may wrap onto one row. */
+.file {
+  max-width: 320px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  margin: 0;
+  padding: 0 8px;
+  border: none;
+  border-radius: 6px;
+  background: var(--dsw-alias-interactive-bg-hover);
+  color: var(--dsw-alias-label-secondary);
+  font: inherit;
+  cursor: pointer;
+}
+
+.file:hover {
+  color: var(--dsw-alias-label-primary);
+  text-decoration: underline;
+}
+
+/* Overflow count: the row never silently drops files it did not show. */
+.more {
+  color: var(--dsw-alias-label-tertiary);
+}

packages/client/ui-deliverables/src/client/ProducedFiles.tsx

@@ -0,0 +1,54 @@
+// ProducedFiles: the produced-file row a finished turn ends with. The paths
+// come pre-matched by the turn-tail chain from the mutation tools'
+// follow-along locations, never from the closing prose. Clicking one goes
+// through the same openFile the tool rows use — the Host's own opener, on the
+// Host machine.
+
+import type { PropsLocale } from '@deepseek-ai/dsh-client-ui-slots'
+import type { TurnTailOwnerProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type { NS } from './locales.ts'
+import css from './ProducedFiles.module.css'
+
+/** Files past this stay counted but unlisted: a refactor turn must not bury the answer. */
+const SHOWN = 6
+
+/** Trailing path segment, the part that identifies the file at a glance. */
+function basename(path: string): string {
+  const at = Math.max(path.lastIndexOf('/'), path.lastIndexOf('\\'))
+  return at === -1 ? path : path.slice(at + 1)
+}
+
+/** Matched paths plus the opener and locale seats needed to present them. */
+export type ProducedFilesProps = Pick<TurnTailOwnerProps, 'openFile'> & {
+  matched: readonly string[]
+} & PropsLocale<typeof NS>
+
+/**
+ * Render one turn's produced files as openable chips.
+ * @param props - selector-matched paths, the chat view's file opener, and the locale seat.
+ * @returns The produced-files row.
+ */
+export function ProducedFiles({ matched: paths, openFile, t }: ProducedFilesProps) {
+  const shown = paths.slice(0, SHOWN)
+  const hidden = paths.length - shown.length
+  return (
+    <div className={css.root}>
+      <span className={css.label}>{t('produced.label')}</span>
+      {shown.map(path => (
+        <button
+          key={path}
+          type="button"
+          className={css.file}
+          // The full path is the disambiguator when two turns produce files
+          // that share a basename; the chip itself stays short.
+          title={path}
+          aria-label={t('produced.open', { name: path })}
+          onClick={() => { openFile(path) }}
+        >
+          {basename(path)}
+        </button>
+      ))}
+      {hidden > 0 && <span className={css.more}>{t('produced.more', { count: String(hidden) })}</span>}
+    </div>
+  )
+}

packages/client/ui-deliverables/src/client/index.ts

@@ -0,0 +1,42 @@
+/**
+ * Deliverables plugin, browser half: registers the produced-files row into
+ * the chat view's turn-tail hole. All policy lives here — the derivation
+ * from the mutation tools' `locations`, the chip cap, and the copy — so
+ * composing this plugin out of cordis.yml removes the surface entirely; the
+ * owning view renders an empty hole at zero cost.
+ */
+import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
+import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
+import type {} from '@deepseek-ai/dsh-client-locale/client'
+import { ProducedFiles } from './ProducedFiles.tsx'
+import { en, NS, zh, type DeliverablesKey } from './locales.ts'
+import { selectProducedFiles } from './turn-deliverables.ts'
+
+declare module '@deepseek-ai/dsh-client-ui-slots' {
+  interface LocaleNamespaceMap {
+    /** Produced-files row copy. */
+    'deliverables': DeliverablesKey
+  }
+}
+
+export { ProducedFiles, type ProducedFilesProps } from './ProducedFiles.tsx'
+export { producedForClosing } from './turn-deliverables.ts'
+
+/** Required services for the tail-slot registration and its dictionaries. */
+export const inject = ['slots', 'locale']
+
+/**
+ * Client plugin body: register the dictionaries and the turn-tail entry.
+ * @param ctx - client root context.
+ */
+export function apply(ctx: ClientContext): void {
+  ctx.effect(() => ctx.locale.register(NS, { zh, en }), 'ui-deliverables: dictionaries')
+  ctx.slots.inject(
+    'conversation.chat.turnTail',
+    () => ctx.slots.register({
+      name: 'conversation.chat.turnTail',
+      select: selectProducedFiles,
+      locale: NS,
+    }, ProducedFiles),
+  )
+}

packages/client/ui-deliverables/src/client/locales.ts

@@ -0,0 +1,21 @@
+/** `deliverables` namespace dictionaries. */
+
+/** Dictionary namespace owned by this plugin. */
+export const NS = 'deliverables'
+
+/** Simplified Chinese dictionary (the key-set source of truth). */
+export const zh = {
+  'produced.label': '产物',
+  'produced.more': '还有 {count} 个',
+  'produced.open': '打开 {name}',
+}
+
+/** English dictionary (same key set). */
+export const en: Record<DeliverablesKey, string> = {
+  'produced.label': 'Produced',
+  'produced.more': '{count} more',
+  'produced.open': 'Open {name}',
+}
+
+/** Union of this namespace's dictionary keys. */
+export type DeliverablesKey = keyof typeof zh

packages/client/ui-deliverables/src/client/turn-deliverables.ts

@@ -0,0 +1,90 @@
+/**
+ * Pure derivation of one turn's produced files from finalized snapshot
+ * nodes. Client-only and model-free: the vocabulary is the mutation tools'
+ * own follow-along `locations`, never the closing prose.
+ */
+import type { ConversationNode, ToolResultNode } from '@deepseek-ai/dsh-client-runtime/client'
+import type { TurnTailOwnerProps } from '@deepseek-ai/dsh-client-ui-conversation/client'
+
+/**
+ * Paths a call view reports having created or changed, by render intent rather
+ * than tool name: a diff card, or a generic card whose kind is `edit` (the
+ * shape `str_replace_editor`'s insert presents). Every other card produces
+ * nothing to open — a read looked, a delete removed, a terminal ran.
+ */
+function producedPaths(view: ToolResultNode['callView']): readonly string[] {
+  if (view === null) return []
+  if (view.card === 'diff') return (view.locations ?? []).map(location => location.path)
+  if (view.card === 'generic' && view.kind === 'edit') {
+    return (view.locations ?? []).map(location => location.path)
+  }
+  return []
+}
+
+/**
+ * Files produced by the turn the assistant at `seq` closes — the anchor the
+ * render site elects, so the row lands under the message that reports the
+ * work rather than after some mid-turn narration.
+ *
+ * The source is the mutation tools' own follow-along `locations`, not the
+ * closing prose: a produced file must be listed whether or not the model
+ * remembered to name it. A mutation is recognized by render intent, not by
+ * tool name — a diff card, or a generic card whose `kind` is `edit` (the shape
+ * `str_replace_editor`'s insert presents) — so a new mutation tool joins by
+ * declaring what it does. Reads contribute nothing (looking at a file does not
+ * produce it), and neither do deletes (there is nothing left to open) or
+ * failed calls. Paths keep first-seen order and appear once, so a file written
+ * and then edited in the same turn is one entry.
+ *
+ * Accumulation resets on the turn boundary — a user message, or a node
+ * reporting a different turn number — so a turn that mutates files and then
+ * ends without content text cannot spill its paths into the next turn's row,
+ * nor leave the dedup set suppressing a file the next turn legitimately
+ * rewrites. Tool results carry no turn of their own; the boundary is read off
+ * the nodes that do, and a user message resets the tracked turn to undefined
+ * because the next node to report one is stating the current turn, not
+ * entering a new one.
+ * @param nodes - snapshot nodes (surface order).
+ * @param seq - the closing assistant's seq (the render site's anchor).
+ * @returns Produced paths in first-seen order; empty when the turn wrote nothing.
+ */
+export function producedForClosing(nodes: readonly ConversationNode[], seq: number): readonly string[] {
+  let pending: string[] = []
+  let seen = new Set<string>()
+  let turn: number | undefined
+  for (const node of nodes) {
+    if (node.kind === 'tool-result') {
+      if (node.isError) continue
+      for (const path of producedPaths(node.callView)) {
+        if (seen.has(path)) continue
+        seen.add(path)
+        pending.push(path)
+      }
+      continue
+    }
+    if (node.kind === 'user') {
+      turn = undefined
+      pending = []
+      seen = new Set()
+    } else if ('turn' in node) {
+      if (turn !== undefined && node.turn !== turn) {
+        pending = []
+        seen = new Set()
+      }
+      turn = node.turn
+    }
+    if (node.kind === 'assistant' && node.seq === seq) return pending
+  }
+  return []
+}
+
+/**
+ * Claim the turn-tail chain only when its closing turn produced files.
+ * @param owner - Turn-tail owner currency for the closing assistant.
+ * @returns Produced paths as the component's match, or null to decline before mount.
+ */
+export function selectProducedFiles(owner: TurnTailOwnerProps): readonly string[] | null {
+  const { nodes, seq } = owner
+  const paths = producedForClosing(nodes, seq)
+  return paths.length === 0 ? null : paths
+}

packages/client/ui-deliverables/src/css-modules.d.ts

@@ -0,0 +1,6 @@
+declare module '*.module.css' {
+  const classes: Record<string, string>
+  export default classes
+}
+
+declare module '*.css'

packages/client/ui-deliverables/src/index.ts

@@ -0,0 +1,9 @@
+/**
+ * Deliverables plugin, node half. Pure UI plugin: the empty apply exists so
+ * the plugin appears in the host cordis.yml / Loader; the browser half ships
+ * via exports["./client"], discovered through the package.json dshClient
+ * declaration.
+ */
+
+/** Host plugin body — no host-side behavior for this surface plugin. */
+export function apply(): void {}

packages/client/ui-deliverables/src/invariant.ts

@@ -0,0 +1,32 @@
+/**
+ * Package-owned invariant companion for `@deepseek-ai/dsh-client-ui-deliverables`.
+ * @module @deepseek-ai/dsh-client-ui-deliverables/invariant
+ */
+
+/* jscpd:ignore-start */
+import type { Context } from 'cordis'
+import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'
+
+const PACKAGE_NAME = '@deepseek-ai/dsh-client-ui-deliverables'
+
+/** Cordis companion plugin name. */
+export const name = 'client-ui-deliverables-invariant'
+/** Service required before the companion can reserve package ownership. */
+export const inject = ['invariants']
+
+/**
+ * No runtime invariant: one slot registration and one dictionary
+ * registration, both effect-owned with disposal proven by the HMR-safety
+ * spec — the plugin emits no cordis events and owns no cross-plugin mutable
+ * state.
+ */
+const install: InvariantInstaller = () => {}
+
+/**
+ * Register this package's invariant companion.
+ * @param ctx - Cordis context carrying the invariant service.
+ * @returns the installed registration's disposer after setup succeeds.
+ */
+export const apply = (ctx: Context): Promise<() => void> =>
+  Promise.resolve(ctx.invariants.register(PACKAGE_NAME, install))
+/* jscpd:ignore-end */

packages/client/ui-deliverables/tests/produced-files.spec.tsx

@@ -0,0 +1,178 @@
+// @vitest-environment jsdom
+/**
+ * ui-deliverables browser half: the derivation contract of
+ * `producedForClosing` over finalized snapshot nodes, the row's rendering
+ * and opener wiring, and the plugin registrations' fiber-teardown removal
+ * (HMR safety) against the real SlotsService.
+ */
+import { Context } from 'cordis'
+import { cleanup, fireEvent, render } from '@testing-library/react'
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
+import type {
+  AssistantMessageNode, ConversationNode, ToolResultNode, UserMessageNode,
+} from '@deepseek-ai/dsh-client-runtime/client'
+import { apply as applyLocale } from '@deepseek-ai/dsh-client-locale/client'
+import { makeTranslate } from '@deepseek-ai/dsh-client-test-runtime'
+import { ProducedFiles } from '../src/client/ProducedFiles.tsx'
+import { producedForClosing, selectProducedFiles } from '../src/client/turn-deliverables.ts'
+import { apply, inject } from '../src/client/index.ts'
+import { apply as applyNode } from '../src/index.ts'
+import { apply as applyInvariant } from '../src/invariant.ts'
+import { zh } from '../src/client/locales.ts'
+
+afterEach(cleanup)
+
+const user = (seq: number, text: string): UserMessageNode => ({
+  kind: 'user',
+  seq,
+  time: seq * 1000,
+  content: [{ type: 'text', text }] as never,
+  source: null,
+})
+const assistant = (seq: number, text: string, turn = 1): AssistantMessageNode => ({
+  kind: 'assistant', seq, time: seq * 1_000, turn, step: 1, blocks: [{ kind: 'text', text }],
+})
+const toolResult = (seq: number, callId: string, name = 'bash'): ToolResultNode => ({
+  kind: 'tool-result', seq, time: seq * 1_000, callId,
+  call: { name, argsRaw: `{"command":"cmd-${callId}","description":"run ${callId}"}` },
+  callTime: seq * 1_000 - 500,
+  content: [], isError: false, callView: null, resultView: null,
+})
+const wrote = (seq: number, callId: string, ...paths: string[]): ToolResultNode => ({
+  ...toolResult(seq, callId, 'write'),
+  callView: {
+    card: 'diff', title: `Write ${paths[0] ?? ''}`,
+    diffs: paths.map(path => ({ path, oldText: null, newText: 'x' })),
+    locations: paths.map(path => ({ path })),
+  },
+})
+
+describe('producedForClosing derivation', () => {
+  it('attributes each turn’s written files to the assistant that closes it', () => {
+    const nodes: ConversationNode[] = [
+      user(1, 'build it'),
+      assistant(2, 'writing', 1),
+      wrote(3, 'a', 'out/index.html'),
+      // Same file touched twice in one turn is one deliverable, in first-seen order.
+      wrote(4, 'b', 'out/app.css', 'out/index.html'),
+      // A read is not a deliverable; a failed write has no file to open.
+      { ...toolResult(5, 'c', 'read'), callView: { card: 'generic', title: 'Read x', locations: [{ path: 'x.ts' }] } },
+      { ...wrote(6, 'd', 'out/broken.html'), isError: true },
+      assistant(7, 'done', 1),
+      user(8, 'again'),
+      assistant(9, 'second turn', 2),
+    ]
+    expect(producedForClosing(nodes, 7)).toEqual(['out/index.html', 'out/app.css'])
+    expect(selectProducedFiles({ nodes, seq: 7, openFile: () => {} })).toEqual(['out/index.html', 'out/app.css'])
+    expect(selectProducedFiles({ nodes, seq: 9, openFile: () => {} })).toBeNull()
+    // A turn that produced nothing yields the empty list, and so does an
+    // anchor the window does not contain.
+    expect(producedForClosing(nodes, 9)).toEqual([])
+    expect(producedForClosing([user(1, 'hi'), assistant(2, 'hello', 1)], 2)).toEqual([])
+    expect(producedForClosing(nodes, 999)).toEqual([])
+  })
+
+  it('counts a generic edit and never spills across the turn boundary', () => {
+    const inserted = (seq: number, callId: string, path: string): ToolResultNode => ({
+      ...toolResult(seq, callId, 'str_replace_editor'),
+      // str_replace_editor's insert mutates behind a generic card, so the
+      // discriminant is the render intent, not the card shape alone.
+      callView: { card: 'generic', title: `insert ${path}`, kind: 'edit', locations: [{ path }] },
+    })
+    const nodes: ConversationNode[] = [
+      user(1, 'insert a line'),
+      inserted(2, 'i', 'notes.md'),
+      assistant(3, 'inserted', 1),
+      // Turn 2 mutates and then ends with no content text (interrupted, or its
+      // last text preceded the tool): its paths must not ride into turn 3.
+      user(4, 'now rewrite it'),
+      wrote(5, 'w', 'leaked.txt'),
+      user(6, 'and again'),
+      wrote(7, 'w2', 'notes.md'),
+      assistant(8, 'done', 3),
+    ]
+    expect(producedForClosing(nodes, 3)).toEqual(['notes.md'])
+    // Turn 3 lists only its own file — and the dedup set did not suppress the
+    // rewrite of a path an earlier turn already touched.
+    expect(producedForClosing(nodes, 8)).toEqual(['notes.md'])
+    expect(producedForClosing(nodes, 8)).not.toContain('leaked.txt')
+  })
+
+  it('resets on a turn-number change and skips turnless, viewless, and locationless nodes', () => {
+    const nodes: ConversationNode[] = [
+      user(1, 'go'),
+      // A turnless surface node neither tracks nor resets the boundary.
+      { kind: 'unknown', seq: 1.5, time: 1_500, type: 'x', data: null },
+      wrote(2, 'w', 'turn-one.txt'),
+      // A view-less result (window truncation) and cards without locations
+      // contribute nothing rather than crashing the walk.
+      toolResult(3, 'plain'),
+      { ...toolResult(4, 'nl', 'write'), callView: { card: 'diff', title: 'Write', diffs: [] } },
+      { ...toolResult(5, 'ge', 'str_replace_editor'), callView: { card: 'generic', title: 'insert', kind: 'edit' } },
+      assistant(6, 'mid narration', 1),
+      // Turn number advances with no user message in the window (truncated
+      // history): the accumulator must reset all the same.
+      assistant(7, 'closing', 2),
+    ]
+    expect(producedForClosing(nodes, 6)).toEqual(['turn-one.txt'])
+    expect(producedForClosing(nodes, 7)).toEqual([])
+  })
+})
+
+describe('ProducedFiles row', () => {
+  const t = makeTranslate(zh)
+
+  it('renders capped chips with the full path reachable and opens one on click', () => {
+    // Seven files: six chips plus an explicit remainder — the row bounds what
+    // it shows and says so rather than dropping the rest silently.
+    const paths = ['deep/a.html', 'b.css', 'c.ts', 'd.ts', 'e.ts', 'f.ts', 'g.ts']
+    const openFile = vi.fn<(path: string) => void>()
+    const view = render(<ProducedFiles matched={paths} openFile={openFile} t={t} />)
+    expect(view.getByText('产物')).toBeTruthy()
+    // Chips carry the basename; the full path stays reachable as the title.
+    const chip = view.getByRole('button', { name: '打开 deep/a.html' })
+    expect(chip.textContent).toBe('a.html')
+    expect(chip.getAttribute('title')).toBe('deep/a.html')
+    expect(view.queryByRole('button', { name: '打开 g.ts' })).toBeNull()
+    expect(view.getByText('还有 1 个')).toBeTruthy()
+    fireEvent.click(chip)
+    expect(openFile).toHaveBeenCalledWith('deep/a.html')
+  })
+})
+
+describe('package shells', () => {
+  it('the node half mounts inert and the invariant companion registers ownership', async () => {
+    // The node half is deliberately inert; mounting it must simply not throw.
+    applyNode()
+    const registered: string[] = []
+    const ctx = new Context()
+    ctx.provide('invariants')
+    ctx.set('invariants', {
+      register: (pkg: string) => { registered.push(pkg); return () => {} },
+    } as never)
+    const dispose = await applyInvariant(ctx)
+    expect(registered).toEqual(['@deepseek-ai/dsh-client-ui-deliverables'])
+    expect(dispose).toBeTypeOf('function')
+  })
+})
+
+describe('plugin registration', () => {
+  it('registers the tail entry and fiber disposal removes it', async () => {
+    const ctx = new Context()
+    await ctx.plugin(SlotsService).await()
+    // The owning view's child declaration, stood up by a bench root entry.
+    ctx.slots.register({
+      name: 'root',
+      children: { 'conversation.chat.turnTail': { kind: 'chain', scope: 'session' } },
+    } as never, () => null)
+    await ctx.plugin({ inject: ['slots'], apply: applyLocale }).await()
+
+    const fiber = ctx.plugin({ inject: [...inject], apply })
+    await fiber.await()
+    expect(ctx.slots.entries('conversation.chat.turnTail')).toHaveLength(1)
+
+    await fiber.dispose()
+    expect(ctx.slots.entries('conversation.chat.turnTail')).toHaveLength(0)
+  })
+})

packages/client/ui-deliverables/tsconfig.json

@@ -0,0 +1,30 @@
+{
+  "extends": "../../../tsconfig.base.client.json",
+  "compilerOptions": {
+    "rootDir": "src",
+    "outDir": "lib/types"
+  },
+  "include": [
+    "src"
+  ],
+  "references": [
+    {
+      "path": "../../../vendor/cordis"
+    },
+    {
+      "path": "../locale"
+    },
+    {
+      "path": "../runtime"
+    },
+    {
+      "path": "../ui-conversation"
+    },
+    {
+      "path": "../ui-slots"
+    },
+    {
+      "path": "../../support/invariants"
+    }
+  ]
+}

packages/client/ui-deliverables/tsdown.config.ts

@@ -0,0 +1,3 @@
+import { clientBundle } from '../tsdown.client.ts'
+
+export default clientBundle('@deepseek-ai/dsh-client-ui-deliverables', ['lib/types/index.js', 'lib/types/invariant.js'])

packages/client/ui-goal/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-goal/README.md
-README.md: 0ea00b8bf9b07f02b5df0f7b3e7d3d9c6f109fde
-README.zh.md: 70bf443118e5d2b1ce46e7bc1479bf932507b3f9
+README.md: a53fb3a89eaee364cb025ca728ca42ce934887b0
+README.zh.md: 1ad9f50aee5b103f6455e4d4b7d29fa9eb29a108

packages/client/ui-goal/README.md

@@ -2,13 +2,13 @@
 
 English | [中文](README.zh.md)
 
-Goal surface plugin, browser half: the `GoalBar` strip is the second standalone card in the `conversation.input.dock` composer-context stack (order 10, after Todo and before Queue). The live goal arrives through `useProjection('goal')` — the host-computed whole value seeded by the history tail page and updated by `session/projection` frames — so the plugin owns no domain store, refresh chain, or event listener. The slot inject face carries only the four mutation verbs (edit / pause / resume / clear over the `goal.*` wire domain — an active goal offers the pause action, a paused one resume); each reads the CAS ref from the session's current projected value at call time and surfaces the settled RPC error inline. The strip single-flights mutations synchronously because React's pending render cannot fence same-frame clicks; after a successful clear it immediately suppresses that exact goal id while the authoritative null projection catches up. Goal creation stays on the `/goal` host command; loading, absent, completed, and successfully cleared goals render nothing.
+Goal surface plugin, browser half: the `GoalBar` strip is the second standalone card in the `conversation.input.dock` composer-context stack (order 10, after Todo and before Queue). The live goal arrives through `useProjection('goal')` — the host-computed whole value seeded by the history tail page and updated by `session/projection` frames — so the plugin owns no domain store, refresh chain, or event listener. The slot inject face carries only the four mutation verbs (edit / pause / resume / clear through `ctx.remote.goals` — an active goal offers the pause action, a paused one resume); each reads the CAS ref from the session's current projected value at call time and surfaces the rejected Remote error inline. The strip single-flights mutations synchronously because React's pending render cannot fence same-frame clicks; after a successful clear it immediately suppresses that exact goal id while the authoritative null projection catches up. Goal creation stays on the `/goal` host command; loading, absent, completed, and successfully cleared goals render nothing.
 
 The `/client` export surface is the plugin body (`apply`/`inject`), the `GoalBar`/`GoalDock` components, and the injected verb face types.
 
 ## Model Experience
 
-Indirectly, through the `goal.edit`/`goal.pause`/`goal.resume`/`goal.clear` RPCs the strip's verbs submit: each accepted mutation commits in a durable `agent/inbox/spliced` insertion, which the goal projection folds immediately, and queues a `goal/change` context message. The model sees that context only if a later pre-step admits it; discarding the queued message does not roll back the projected state. The strip itself adds no prompt content.
+Indirectly, through the `goals/edit`, `goals/pause`, `goals/resume`, and `goals/clear` Remote methods the strip invokes: each accepted mutation commits in a durable `agent/inbox/spliced` insertion, which the goal projection folds immediately, and queues a `goal/change` context message. The model sees that context only if a later pre-step admits it; discarding the queued message does not roll back the projected state. The strip itself adds no prompt content.
 
 #### KV Cache effect
 

packages/client/ui-goal/README.zh.md

@@ -2,13 +2,13 @@
 
 [English](README.md) | 中文
 
-Goal 界面插件（浏览器端部分）：`GoalBar` 条带是 `conversation.input.dock` composer 上下文堆栈中的第二张独立卡片（order 10，位于 Todo 之后、Queue 之前）。活值经 `useProjection('goal')` 到达——host 计算的全量值由历史尾页播种、由 `session/projection` 帧更新——因此本插件不持有领域 store、不设刷新链、不挂事件监听。slot 注入面只携带四个变更动词（edit / pause / resume / clear，走 `goal.*` 协议域——active 的 goal 提供暂停动作，paused 的提供恢复）；每个动词在调用时从会话当前投影值读取 CAS ref，并把结算后的 RPC 错误内联呈现。由于 React 的 pending 渲染无法拦住同一帧内的点击，横条会同步为变更建立 single-flight 防护；清除成功后，会立即抑制该 goal id 对应的目标显示，直到权威的 null 投影追上。goal 的创建仍归 `/goal` host 命令；加载中、无 goal、已完成和已成功清除的 goal 一律不渲染。
+Goal 界面插件（浏览器端部分）：`GoalBar` 条带是 `conversation.input.dock` composer 上下文堆栈中的第二张独立卡片（order 10，位于 Todo 之后、Queue 之前）。活值经 `useProjection('goal')` 到达——host 计算的全量值由历史尾页播种、由 `session/projection` 帧更新——因此本插件不持有领域 store、不设刷新链、不挂事件监听。slot 注入面只携带四个变更动词（edit / pause / resume / clear，经 `ctx.remote.goals` 调用——active 的 goal 提供暂停动作，paused 的提供恢复）；每个动词在调用时从会话当前投影值读取 CAS ref，并将 Remote 调用的拒绝错误内联呈现。由于 React 的 pending 渲染无法拦住同一帧内的点击，横条会同步为变更建立 single-flight 防护；清除成功后，会立即抑制该 goal id 对应的目标显示，直到权威的 null 投影追上。goal 的创建仍归 `/goal` host 命令；加载中、无 goal、已完成和已成功清除的 goal 一律不渲染。
 
 `/client` 的导出接口包括插件本体（`apply`/`inject`）、`GoalBar`/`GoalDock` 组件与注入动词面类型。
 
 ## 模型体验
 
-间接影响：条带动词提交的 `goal.edit`/`goal.pause`/`goal.resume`/`goal.clear` RPC 每次被接受后，变更都会在持久 `agent/inbox/spliced` 插入项中提交，goal 投影会立即折叠该插入项，同时将一条 `goal/change` 上下文消息排队。只有后续 pre-step 准入该上下文时，模型才会看到它；丢弃已排队的消息不会回滚投影状态。条带自身不添加任何提示词内容。
+间接影响：条带通过调用 `goals/edit`、`goals/pause`、`goals/resume` 和 `goals/clear` Remote 方法提交变更；每次被接受的变更都会在持久 `agent/inbox/spliced` 插入项中提交，goal 投影会立即折叠该插入项，同时将一条 `goal/change` 上下文消息排队。只有后续 pre-step 准入该上下文时，模型才会看到它；丢弃已排队的消息不会回滚投影状态。条带自身不添加任何提示词内容。
 
 #### KV Cache 影响
 

packages/client/ui-goal/package.json

@@ -25,6 +25,7 @@
   "dshClient": {
     "inject": [
       "@deepseek-ai/dsh-client-runtime",
+      "@deepseek-ai/dsh-api-remotes",
       "@deepseek-ai/dsh-client-locale",
       "@deepseek-ai/dsh-client-ui-conversation"
     ],
@@ -36,8 +37,8 @@
   },
   "license": "BSD-3-Clause",
   "peerDependencies": {
-    "@deepseek-ai/dsh-client-connection": "^0.0.1",
     "@deepseek-ai/dsh-client-locale": "^0.0.1",
+    "@deepseek-ai/dsh-api-remotes": "^0.0.1",
     "@deepseek-ai/dsh-client-runtime": "^0.0.1",
     "@deepseek-ai/dsh-client-ui-conversation": "^0.0.1",
     "@deepseek-ai/dsh-client-ui-primitives": "^0.0.1",
@@ -48,8 +49,8 @@
     "react": "^18.2.0"
   },
   "devDependencies": {
-    "@deepseek-ai/dsh-client-connection": "workspace:^",
     "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-api-remotes": "workspace:^",
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-test-runtime": "workspace:^",
     "@deepseek-ai/dsh-client-ui-conversation": "workspace:^",

packages/client/ui-goal/src/client/index.ts

@@ -4,19 +4,19 @@
  * arrives through `useProjection('goal')` (seeded by the history tail page,
  * updated by session/projection frames), so this plugin owns no store, no
  * refresh chain, and no event listener. The inject face carries only the
- * three mutation verbs (edit/resume/clear over the goal.* wire domain);
+ * four mutation verbs through the generated Goal Remote API;
  * their CAS ref reads the session's current projected value at call time.
  * Goal creation stays on the /goal host command.
  */
-import type { ConnectionHandle, GoalRef, SessionId } from '@deepseek-ai/dsh-client-connection/client'
-import type { RpcResult } from '@deepseek-ai/dsh-client-connection/client'
-import type { ClientContext } from '@deepseek-ai/dsh-client-runtime/client'
+import type { ClientContext, SessionId } from '@deepseek-ai/dsh-client-runtime/client'
+// Type-only: pulls the generated Remote API and ctx.remote merge through the Client assembly boundary.
+import type {} from '@deepseek-ai/dsh-api-remotes/client'
 // Type-only: pulls the ui-conversation SlotMap merge (the input.dock entry).
 import type {} from '@deepseek-ai/dsh-client-ui-conversation/client'
 // Type-only: pulls the locale plugin's Context merge (ctx.locale).
 import type {} from '@deepseek-ai/dsh-client-locale/client'
 // Type-only: the `goal` SessionProjectionMap key merge (single source, the domain's pure outlet).
-import type { GoalProjection } from '@deepseek-ai/dsh-goal/client'
+import type { GoalProjection, GoalRef } from '@deepseek-ai/dsh-goal/client'
 import type { GoalActionResult, GoalBarActions } from './slots.ts'
 import { GoalDock } from './GoalBar.tsx'
 import { en, zh, type GoalKey } from './locales.ts'
@@ -35,13 +35,32 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
 /** Dictionary namespace owned by this plugin. */
 const NS = 'goal'
 
-/** Required services: slots for the dock entry, sessions for the projected ref, connection for the wire verbs, locale for the copy. */
-export const inject = ['slots', 'sessions', 'connection', 'locale']
+/** Required services: slots for the dock entry, sessions for the projected ref, API for Remote mutations, locale for the copy. */
+export const inject = ['slots', 'sessions', 'remote', 'remote.goals', 'locale']
 
-/** Map one settled RPC result onto the strip's inline-render shape. */
-function settle<T>(result: RpcResult<T>): GoalActionResult {
-  if (result.ok) return { ok: true }
-  return { ok: false, error: { code: result.error.code, message: result.error.message } }
+/** Map one generated Remote call, including synchronous namespace lookup failures, onto the strip's inline-render shape. */
+async function settle(invoke: () => Promise<unknown>): Promise<GoalActionResult> {
+  try {
+    await invoke()
+    return { ok: true }
+  } catch (error) {
+    const cause = error instanceof Error ? error.cause : undefined
+    if (isRemoteError(cause)) return { ok: false, error: { code: cause.code, message: cause.message } }
+    return {
+      ok: false,
+      error: {
+        code: 'internal',
+        message: error instanceof Error ? error.message : 'goal mutation failed',
+      },
+    }
+  }
+}
+
+function isRemoteError(value: unknown): value is { readonly code: string; readonly message: string } {
+  return value !== null
+    && typeof value === 'object'
+    && typeof (value as { code?: unknown }).code === 'string'
+    && typeof (value as { message?: unknown }).message === 'string'
 }
 
 /**
@@ -51,8 +70,6 @@ function settle<T>(result: RpcResult<T>): GoalActionResult {
 export function apply(ctx: ClientContext): void {
   ctx.effect(() => ctx.locale.register(NS, { zh, en }), 'ui-goal: dictionaries')
 
-  const { goals } = (ctx.get('connection') as ConnectionHandle).api
-
   const sessions = ctx.sessions
 
   /** The session's current projected CAS ref, read at verb call time (no staleness fence: the RPC's CAS is the guard). */
@@ -77,22 +94,22 @@ export function apply(ctx: ClientContext): void {
       onEdit: async (objective) => {
         const ref = refOf(sessionId)
         if (ref === undefined) return noCurrentGoal
-        return settle((await goals.edit({ sessionId, ref, objective })).result)
+        return settle(() => ctx.remote.goals.edit(sessionId, ref, { objective }))
       },
       onPause: async () => {
         const ref = refOf(sessionId)
         if (ref === undefined) return noCurrentGoal
-        return settle((await goals.pause({ sessionId, ref })).result)
+        return settle(() => ctx.remote.goals.pause(sessionId, ref))
       },
       onResume: async () => {
         const ref = refOf(sessionId)
         if (ref === undefined) return noCurrentGoal
-        return settle((await goals.resume({ sessionId, ref })).result)
+        return settle(() => ctx.remote.goals.resume(sessionId, ref))
       },
       onClear: async () => {
         const ref = refOf(sessionId)
         if (ref === undefined) return noCurrentGoal
-        return settle((await goals.clear({ sessionId, ref })).result)
+        return settle(() => ctx.remote.goals.clear(sessionId, ref))
       },
     }),
   }, GoalDock))

packages/client/ui-goal/tests/browser-plugin.spec.tsx

@@ -1,16 +1,16 @@
 // @vitest-environment jsdom
 /**
- * ui-goal browser half on a real cordis Context with fake slots/connection/
+ * ui-goal browser half on a real cordis Context with fake slots/api/
  * sessions faces: the plugin registers the GoalBar dock entry at
- * conversation.input.dock, the inject face's three verbs read the CAS ref
+ * conversation.input.dock, the inject face's four verbs read the CAS ref
  * from the session's CURRENT projected value at call time (no fence — the
- * RPC's compare-and-set is the guard), a missing projection short-circuits
- * to the no-current-goal error without touching the wire, and RPC errors
+ * Remote method's compare-and-set is the guard), a missing projection short-circuits
+ * to the no-current-goal error without touching the wire, and Remote errors
  * map onto the inline-render result shape. Registration disposal rides the
  * plugin fiber (HMR safety). The node half and the invariant companion are
  * exercised over the same Context.
  */
-import { Context } from 'cordis'
+import { Context, Service } from 'cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { cleanup, render } from '@testing-library/react'
 import { afterEach } from 'vitest'
@@ -44,27 +44,45 @@ function makeProjection(revision = 3): GoalProjection {
   }
 }
 
-/** Boot the plugin over fake faces; goals verbs record payloads and answer per the script. */
-async function bench(options: { projection?: GoalProjection | null | undefined; failWith?: { code: string; message: string } } = {}) {
+/** Boot the plugin over fake faces; Goal Remote methods record arguments and answer per the script. */
+async function bench(options: {
+  projection?: GoalProjection | null | undefined
+  failWith?: { code: string; message: string }
+  rejectWith?: unknown
+} = {}) {
   const ctx = new Context()
-  const calls: { method: string; payload: unknown }[] = []
+  const calls: { method: string; args: unknown[] }[] = []
   function answer<T>(method: string, value: T) {
-    return (payload: unknown) => {
-      calls.push({ method, payload })
-      return Promise.resolve({
-        result: options.failWith === undefined
-          ? { ok: true as const, value }
-          : { ok: false as const, error: { ...options.failWith, details: {} } },
-      })
+    return (...args: unknown[]) => {
+      calls.push({ method, args })
+      // oxlint-disable-next-line typescript/prefer-promise-reject-errors -- the non-Error rejection is the defensive scenario under test.
+      if ('rejectWith' in options) return Promise.reject(options.rejectWith)
+      if (options.failWith !== undefined) {
+        return Promise.reject(new Error(`Remote ${method} failed`, { cause: options.failWith }))
+      }
+      return Promise.resolve(value)
     }
   }
   const ref = { id: 'g-1', revision: 3 }
-  ctx.provide('connection', { api: { goals: {
-    edit: answer('goal.edit', { ref }),
-    pause: answer('goal.pause', { ref }),
-    resume: answer('goal.resume', { ref }),
-    clear: answer('goal.clear', { cleared: true as const }),
-  } } })
+  const goals = (prefix: string) => ({
+    edit: answer(`${prefix}/edit`, { ref }),
+    pause: answer(`${prefix}/pause`, { ref }),
+    resume: answer(`${prefix}/resume`, { ref }),
+    clear: answer(`${prefix}/clear`, ref),
+  })
+  let activeGoals: ReturnType<typeof goals> | undefined = goals('goals')
+  class RemoteService extends Service {
+    constructor(serviceCtx: Context) {
+      super(serviceCtx, 'remote')
+    }
+  }
+  new RemoteService(ctx)
+  ctx.provide('remote.goals', {
+    get edit() { return activeGoals?.edit },
+    get pause() { return activeGoals?.pause },
+    get resume() { return activeGoals?.resume },
+    get clear() { return activeGoals?.clear },
+  })
   await ctx.plugin(SlotsService).await()
   ctx.slots.register({
     name: 'root', children: { 'conversation.input.dock': { kind: 'list', scope: 'session' } },
@@ -85,6 +103,8 @@ async function bench(options: { projection?: GoalProjection | null | undefined;
     ctx,
     fiber,
     calls,
+    remountGoals: () => { activeGoals = goals('remounted-goals') },
+    unmountGoals: () => { activeGoals = undefined },
     entry: () => {
       const entry = ctx.slots.entries('conversation.input.dock')[0]
       if (entry === undefined) return undefined
@@ -113,12 +133,34 @@ describe('ui-goal browser plugin', () => {
     expect(await verbs.onPause()).toEqual({ ok: true })
     expect(await verbs.onResume()).toEqual({ ok: true })
     expect(await verbs.onClear()).toEqual({ ok: true })
-    expect(b.calls.map(c => c.method)).toEqual(['goal.edit', 'goal.pause', 'goal.resume', 'goal.clear'])
+    expect(b.calls.map(c => c.method)).toEqual(['goals/edit', 'goals/pause', 'goals/resume', 'goals/clear'])
     const ref = { id: 'g-1', revision: 5 }
-    expect(b.calls[0]?.payload).toEqual({ sessionId: 's1', ref, objective: 'New objective' })
-    expect(b.calls[1]?.payload).toEqual({ sessionId: 's1', ref })
-    expect(b.calls[2]?.payload).toEqual({ sessionId: 's1', ref })
-    expect(b.calls[3]?.payload).toEqual({ sessionId: 's1', ref })
+    expect(b.calls[0]?.args).toEqual(['s1', ref, { objective: 'New objective' }])
+    expect(b.calls[1]?.args).toEqual(['s1', ref])
+    expect(b.calls[2]?.args).toEqual(['s1', ref])
+    expect(b.calls[3]?.args).toEqual(['s1', ref])
+  })
+
+  it('verbs read a remounted Remote namespace at action time', async () => {
+    const b = await bench({ projection: makeProjection() })
+    await b.fiber.await()
+    const verbs = b.entry()!.inject!(sid('s1'))
+    b.remountGoals()
+
+    expect(await verbs.onPause()).toEqual({ ok: true })
+    expect(b.calls).toMatchObject([{ method: 'remounted-goals/pause' }])
+  })
+
+  it('settles every verb when the Remote namespace is temporarily absent', async () => {
+    const b = await bench({ projection: makeProjection() })
+    await b.fiber.await()
+    const verbs = b.entry()!.inject!(sid('s1'))
+    b.unmountGoals()
+
+    for (const result of [await verbs.onEdit('x'), await verbs.onPause(), await verbs.onResume(), await verbs.onClear()]) {
+      expect(result).toMatchObject({ ok: false, error: { code: 'internal' } })
+    }
+    expect(b.calls).toHaveLength(0)
   })
 
   it('a null or absent projection short-circuits every verb without touching the wire', async () => {
@@ -133,13 +175,26 @@ describe('ui-goal browser plugin', () => {
     }
   })
 
-  it('maps a settled RPC error onto the inline-render shape', async () => {
+  it('maps a Remote error onto the inline-render shape', async () => {
     const b = await bench({ projection: makeProjection(), failWith: { code: 'internal', message: 'stale revision' } })
     await b.fiber.await()
     const verbs = b.entry()!.inject!(sid('s1'))
     expect(await verbs.onEdit('x')).toEqual({ ok: false, error: { code: 'internal', message: 'stale revision' } })
   })
 
+  it.each([
+    [new Error('connection closed'), 'connection closed'],
+    ['connection closed', 'goal mutation failed'],
+    [new Error('invalid Remote failure', { cause: null }), 'invalid Remote failure'],
+    [new Error('invalid Remote failure', { cause: { code: 1, message: 'stale revision' } }), 'invalid Remote failure'],
+    [new Error('invalid Remote failure', { cause: { code: 'internal', message: 1 } }), 'invalid Remote failure'],
+  ])('maps an unstructured rejection onto an internal error', async (rejection, message) => {
+    const b = await bench({ projection: makeProjection(), rejectWith: rejection })
+    await b.fiber.await()
+    const verbs = b.entry()!.inject!(sid('s1'))
+    expect(await verbs.onEdit('x')).toEqual({ ok: false, error: { code: 'internal', message } })
+  })
+
   it('drops the dock entry when the plugin fiber unloads (HMR safety)', async () => {
     const b = await bench()
     await b.fiber.await()

packages/client/ui-goal/tsconfig.json

@@ -12,10 +12,10 @@
       "path": "../../../vendor/cordis"
     },
     {
-      "path": "../connection"
+      "path": "../locale"
     },
     {
-      "path": "../locale"
+      "path": "../../api/remotes"
     },
     {
       "path": "../runtime"

packages/client/ui-layout/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-layout/README.md
-README.md: 5cb8f01efb2e18109e917225dbce088ea77394af
-README.zh.md: 6559fe595a6219b139fe46cf046906fa63636f64
+README.md: fa60520a20ac8a7f25d494879c68efb06a28998f
+README.zh.md: 6ca04c56c29a55f84fc7a6399a7feeb81d249899

packages/client/ui-layout/README.md

@@ -2,7 +2,7 @@
 
 English | [中文](README.zh.md)
 
-Shell plugin: three-column AppFrame (drag handles and concession chain) plus the `ctx.layout` panel-geometry service; it registers into the runtime-owned `root` slot and declares `sidebar`, `conversation`, `details`, and `conversation.empty`. The sidebar resize boundary is an invisible hit strip, while the details boundary retains its floating pill; only details shrinks during concession and then auto-closes. A closed sidebar retains a 56px control rail while details closes to zero width. The package also seats the theme presenter: it consumes resolved `ctx.theme` snapshots and projects them onto the document (`html { color-scheme }` for native UA chrome, `body[data-ds-dark-theme]` from the active color scheme, plus the theme's alias tokens as inline variables on body).
+Shell plugin: three-column AppFrame (drag handles and concession chain) plus the `ctx.layout` panel-geometry service; it registers into the runtime-owned `root` slot and declares `sidebar`, `conversation`, `details`, and `conversation.empty`. The sidebar resize boundary is an invisible hit strip, while the details boundary retains its floating pill; only details shrinks during concession and then auto-closes. A closed sidebar retains a 56px control rail while details closes to zero width. The package also seats the theme presenter: it consumes resolved `ctx.theme` snapshots and projects them onto the document (`html { color-scheme }` for native UA chrome, `body[data-ds-dark-theme]` from the active color scheme, the theme's alias tokens as inline variables on body, and one owned `<meta name="theme-color">` whose content follows the computed body background). Measuring after palette and token application keeps the rendered background as the single color authority; disposing the presenter removes its metadata node with its other global writes.
 
 AppFrame always mounts the conversation and details columns; a connected Session renders through `SessionProvider`. The transient layout store starts the sidebar at its default width and details closed, and it never reads or writes `localStorage`. Hero and other unselected states also derive a zero rendered details width without changing that stored preference. AppFrame retains the last non-blank Session id across those states: the first Session remains closed, an explicit details action opens the contract default width, returning to the same Session restores its unchanged width, and selecting a different Session closes details before paint. The conversation owner share is empty, while the sidebar owner share contains only `collapsed` and `width`; registrants obtain business data from standard hooks and actions from their own inject faces.
 

packages/client/ui-layout/README.zh.md

@@ -2,7 +2,7 @@
 
 [English](README.md) | 中文
 
-外壳插件：三栏 AppFrame（拖动手柄与让步链）加 `ctx.layout` 面板几何服务；它注册到运行时拥有的 `root` slot，并声明 `sidebar`、`conversation`、`details` 和 `conversation.empty`。侧边栏的缩放边界是不可见命中条带，详情栏边界则保留其浮动胶囊；让步期间只有详情栏会收缩并随后自动关闭。关闭的侧边栏仍保留 56px 控制栏，详情栏则关闭到零宽度。该包还提供主题呈现器：它消费解析后的 `ctx.theme` 快照，并将其投影到 document（用 `html { color-scheme }` 驱动原生 UA 控件，依据当前配色方案设置 `body[data-ds-dark-theme]`，并将主题的别名 token 设为 body 上的内联变量）。
+外壳插件：三栏 AppFrame（拖动手柄与让步链）加 `ctx.layout` 面板几何服务；它注册到运行时拥有的 `root` slot，并声明 `sidebar`、`conversation`、`details` 和 `conversation.empty`。侧边栏的缩放边界是不可见命中条带，详情栏边界则保留其浮动胶囊；让步期间只有详情栏会收缩并随后自动关闭。关闭的侧边栏仍保留 56px 控制栏，详情栏则关闭到零宽度。该包还提供主题呈现器：它消费解析后的 `ctx.theme` 快照，并将其投影到 document（用 `html { color-scheme }` 驱动原生 UA 控件，依据当前配色方案设置 `body[data-ds-dark-theme]`，并将主题的别名 token 设为 body 上的内联变量，同时拥有一个 `<meta name="theme-color">`，其内容随计算后的 body 背景色更新）。在应用调色板和 token 后进行测量，可确保渲染后的背景保持为唯一颜色真源；呈现器在资源释放时会移除其自有的元数据节点，并一并清除其写入的其他全局状态。
 
 AppFrame 始终挂载会话栏和详情栏；已连接 Session 通过 `SessionProvider` 渲染。布局 store 是瞬时状态，侧边栏以默认宽度启动，详情栏则保持关闭，且该 store 从不读写 `localStorage`。hero 和其他未选中状态也会将详情栏的渲染宽度派生为零，但不会改变存储的宽度偏好。AppFrame 会跨越这些状态保留最后一个非 blank 会话 id：首个会话保持关闭；显式打开详情栏的操作会使用契约默认宽度；返回同一会话时恢复其未改变的宽度；选择不同会话时，详情栏会在绘制前关闭。会话 owner share 为空，侧边栏 owner share 只包含 `collapsed` 和 `width`；注册方通过标准钩子获取业务数据，并从各自的 inject 接口获取操作。
 

packages/client/ui-layout/src/client/theme-presenter.ts

@@ -1,10 +1,11 @@
 /**
  * Global theme DOM applier: projects the resolved ThemeSnapshot onto the
  * document — `html { color-scheme }` for native UA chrome (scrollbars, form
- * controls), `body[data-ds-dark-theme]` for the token palette, and the active
- * theme's alias-token overrides as inline CSS variables on body. Pure DOM
- * writes, no React involvement; the presenter only ever retracts what it wrote
- * itself, so foreign attributes and inline styles survive apply/dispose.
+ * controls), `body[data-ds-dark-theme]` for the token palette, the active
+ * theme's alias-token overrides as inline CSS variables on body, and one
+ * presenter-owned `meta[name="theme-color"]` for surrounding browser UI. Pure
+ * DOM writes, no React involvement; the presenter only ever retracts what it
+ * wrote itself, so foreign attributes, metadata, and inline styles survive.
  */
 import type { ThemeSnapshot } from '@deepseek-ai/dsh-client-ui-theme/client'
 
@@ -15,12 +16,22 @@ export const DARK_ATTRIBUTE = 'data-ds-dark-theme'
 export class ThemePresenter {
   /** Token names this presenter wrote in the last apply (its retraction set). */
   private appliedTokens: string[] = []
+  /** The single metadata node this presenter inserts and removes. */
+  private readonly themeColorMeta: HTMLMetaElement
+
+  /** Create the presenter-owned metadata node before the first snapshot arrives. */
+  constructor() {
+    this.themeColorMeta = document.createElement('meta')
+    this.themeColorMeta.name = 'theme-color'
+  }
 
   /**
    * Project a snapshot onto the document: set root `color-scheme` and the body
    * palette attribute from `active.colorScheme` (never the id — `system` is
    * resolved upstream), then replace the previously applied token variables
-   * with `active.tokens`.
+   * with `active.tokens`. Browser theme-color metadata follows the computed
+   * body background after those writes, so the rendered palette remains the
+   * color authority.
    * @param snapshot - resolved theme snapshot from ctx.theme.
    */
   apply(snapshot: ThemeSnapshot): void {
@@ -35,14 +46,17 @@ export class ThemePresenter {
       body.style.setProperty(name, value)
       this.appliedTokens.push(name)
     }
+    this.themeColorMeta.content = getComputedStyle(body).backgroundColor
+    if (!this.themeColorMeta.isConnected) document.head.append(this.themeColorMeta)
   }
 
-  /** Retract everything this presenter wrote: root color-scheme, the palette attribute, and all applied token variables. */
+  /** Retract root color-scheme, the palette attribute, token variables, and the owned metadata node. */
   dispose(): void {
     document.documentElement.style.removeProperty('color-scheme')
     const body = document.body
     body.removeAttribute(DARK_ATTRIBUTE)
     for (const name of this.appliedTokens) body.style.removeProperty(name)
     this.appliedTokens = []
+    this.themeColorMeta.remove()
   }
 }

packages/client/ui-layout/tests/apply.spec.ts

@@ -7,7 +7,7 @@
 // coverage gate still requires exercised.
 
 import { Context } from 'cordis'
-import { describe, expect, it, vi } from 'vitest'
+import { beforeEach, describe, expect, it, vi } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
 import { apply as themeApply, inject as themeInject, ThemeService } from '@deepseek-ai/dsh-client-ui-theme/client'
@@ -15,6 +15,10 @@ import { apply, inject, LayoutService } from '@deepseek-ai/dsh-client-ui-layout/
 import { apply as nodeApply } from '@deepseek-ai/dsh-client-ui-layout'
 import * as invariant from '@deepseek-ai/dsh-client-ui-layout/invariant'
 
+beforeEach(() => {
+  document.head.querySelectorAll('meta[name="theme-color"]').forEach((node) => { node.remove() })
+})
+
 async function bench() {
   const ctx = new Context()
   const slotsFiber = ctx.plugin(SlotsService)
@@ -65,13 +69,17 @@ describe('ui-layout client apply', () => {
     // Initial getter application: jsdom has no matchMedia, system resolves light.
     expect(document.documentElement.style.colorScheme).toBe('light')
     expect(document.body.hasAttribute('data-ds-dark-theme')).toBe(false)
+    const themeColorMeta = document.head.querySelector<HTMLMetaElement>('meta[name="theme-color"]')
+    expect(themeColorMeta).not.toBeNull()
     const theme = ctx.get('theme') as ThemeService
     theme.setTheme('dark')
     expect(document.documentElement.style.colorScheme).toBe('dark')
     expect(document.body.hasAttribute('data-ds-dark-theme')).toBe(true)
+    expect(document.head.querySelector('meta[name="theme-color"]')).toBe(themeColorMeta)
     await fiber.dispose()
     expect(document.documentElement.style.colorScheme).toBe('')
     expect(document.body.hasAttribute('data-ds-dark-theme')).toBe(false)
+    expect(themeColorMeta?.isConnected).toBe(false)
     // Listener is off: further theme changes no longer reach the document.
     theme.setTheme('light')
     theme.setTheme('dark')

packages/client/ui-layout/tests/theme-presenter.spec.ts

@@ -1,40 +1,68 @@
 // @vitest-environment jsdom
 // ThemePresenter behavior account: root color-scheme and the palette attribute
 // follow active.colorScheme only, token variables replace the previous apply's
-// set, and dispose retracts everything the presenter wrote.
+// set, theme-color metadata follows the rendered body background, and dispose
+// retracts everything the presenter wrote.
 
-import { beforeEach, describe, expect, it } from 'vitest'
+import { afterEach, beforeEach, describe, expect, it } from 'vitest'
 import type { ThemeSnapshot } from '@deepseek-ai/dsh-client-ui-theme/client'
 import { DARK_ATTRIBUTE, ThemePresenter } from '@deepseek-ai/dsh-client-ui-layout/src/client/theme-presenter.ts'
 
+const LIGHT_THEME_COLOR = 'rgb(255, 255, 255)'
+const DARK_THEME_COLOR = 'rgb(21, 21, 23)'
+
 function snapshot(colorScheme: 'light' | 'dark', tokens: Record<string, string> = {}): ThemeSnapshot {
   // The presenter must key off colorScheme, not the id — keep them distinct.
   const active = { id: `${colorScheme}-test`, colorScheme, tokens }
   return { preference: colorScheme, active, themes: [active], revision: 1 }
 }
 
+function clearThemePresentation(): void {
+  document.head.querySelectorAll('meta[name="theme-color"], style[data-theme-presenter-test]').forEach((node) => { node.remove() })
+}
+
+function themeColorMeta(): HTMLMetaElement | null {
+  return document.head.querySelector<HTMLMetaElement>('meta[name="theme-color"]')
+}
+
 beforeEach(() => {
+  clearThemePresentation()
   document.documentElement.style.removeProperty('color-scheme')
   document.body.removeAttribute(DARK_ATTRIBUTE)
   document.body.removeAttribute('style')
+  const style = document.createElement('style')
+  style.dataset.themePresenterTest = ''
+  style.textContent = `
+    body { background-color: ${LIGHT_THEME_COLOR}; }
+    body[${DARK_ATTRIBUTE}] { background-color: ${DARK_THEME_COLOR}; }
+  `
+  document.head.append(style)
 })
 
+afterEach(clearThemePresentation)
+
 describe('ThemePresenter', () => {
   it('light scheme sets root color-scheme and leaves the dark attribute absent', () => {
     const presenter = new ThemePresenter()
     presenter.apply(snapshot('light'))
     expect(document.documentElement.style.colorScheme).toBe('light')
     expect(document.body.hasAttribute(DARK_ATTRIBUTE)).toBe(false)
+    expect(themeColorMeta()?.content).toBe(LIGHT_THEME_COLOR)
   })
 
-  it('dark scheme sets root color-scheme and the attribute; switching to light clears both', () => {
+  it('dark scheme sets root color-scheme, the attribute, and metadata; switching to light updates one node', () => {
     const presenter = new ThemePresenter()
     presenter.apply(snapshot('dark'))
+    const meta = themeColorMeta()
     expect(document.documentElement.style.colorScheme).toBe('dark')
     expect(document.body.hasAttribute(DARK_ATTRIBUTE)).toBe(true)
+    expect(meta?.content).toBe(DARK_THEME_COLOR)
     presenter.apply(snapshot('light'))
     expect(document.documentElement.style.colorScheme).toBe('light')
     expect(document.body.hasAttribute(DARK_ATTRIBUTE)).toBe(false)
+    expect(themeColorMeta()).toBe(meta)
+    expect(meta?.content).toBe(LIGHT_THEME_COLOR)
+    expect(document.head.querySelectorAll('meta[name="theme-color"]')).toHaveLength(1)
   })
 
   it('applies tokens as inline variables and clears the previous set on theme change', () => {
@@ -52,10 +80,12 @@ describe('ThemePresenter', () => {
     document.body.style.setProperty('--foreign', 'kept')
     const presenter = new ThemePresenter()
     presenter.apply(snapshot('dark', { '--dsw-alias-bg': '#111' }))
+    const meta = themeColorMeta()
     presenter.dispose()
     expect(document.documentElement.style.colorScheme).toBe('')
     expect(document.body.hasAttribute(DARK_ATTRIBUTE)).toBe(false)
     expect(document.body.style.getPropertyValue('--dsw-alias-bg')).toBe('')
     expect(document.body.style.getPropertyValue('--foreign')).toBe('kept')
+    expect(meta?.isConnected).toBe(false)
   })
 })

packages/client/ui-model/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-model/README.md
-README.md: 5f9fc65939eb747d916fa5609423d3186d1fefde
-README.zh.md: 3ed8db3095d96e48813cf5b15a206ebf4c894950
+README.md: 5a6f998476629566d35af32efa5d8bc5072a872b
+README.zh.md: 2bb22c55f1ae5af59f21e254804329d288806a90

packages/client/ui-model/README.md

@@ -6,6 +6,8 @@ Model selection plugin, browser half: TWO entries over ONE per-session directory
 
 The Host-reported provider/model/reasoning target is the single selection fact, but it is echoed only when the exact route remains in the advertised groups; removing that catalog row leaves the routable target intact while the trigger prompts `Select model`, no stale row is synthesized, and no Effort row is shown until the user picks an advertised model. Directory loads and selections share a generation counter so an older response never overwrites a newer one; a connection reset drops every resident projection and repulls the Host-restored target before display. Provider-local metadata failures list inline while usable groups stay selectable, and selection failures retain the prior target and directory.
 
+When the Host reports that no adapter serves the session's route (`session.models.routable`), this plugin raises a composer block through `ctx.conversation.blocks` and the input goes inert with this plugin's own copy; recovering clears it without a reload. It follows `routable` and nothing else: a `null` — before the first load, or after one failed — never blocks, or a slow Host would lock a working composer, and catalog membership never blocks either, because a route serving a model it stopped advertising is missing from the groups yet perfectly usable. The trigger's own `Select model` fallback still covers that case, which is display, not a gate.
+
 Directories are per-session, resolved lazily through `ctx.models.directoryFor(sessionId)`, and disposed with the session scope. Addressed subagent sessions expose neither entry, and their directory rejects loads, selections, and reconnect refreshes, because ordinary Agent-bound model RPCs would activate persisted child history outside the direct-parent continuation seam.
 
 The `/client` export surface is the plugin body (`apply`/`inject`), `ModelService`, `ModelDirectory` with its state shape, and the seat's injected face type.

packages/client/ui-model/README.zh.md

@@ -6,6 +6,8 @@
 
 Host 报告的提供方／模型／推理（reasoning）目标是唯一的选择事实，但只有当该精确路由仍在已公布分组中时才会回显；删除该目录行会保留仍可路由的目标，但触发器会提示 `Select model`，系统不会合成陈旧行，且在用户选择已公布的模型之前不会显示 Effort 行。目录加载与选择共享一个代次计数器，旧响应不会覆盖新结果；连接重置会丢弃所有常驻目录投影，并在显示前重新拉取 Host 恢复的目标。各提供方的元数据获取失败会内联列出，同时可用分组仍可选择；选择失败会保留先前的目标和目录。
 
+当宿主报告没有适配器服务该会话的路由（`session.models.routable`）时，本插件经 `ctx.conversation.blocks` 抬起一个编辑器 block，输入框随之变为惰性并显示本插件自己的文案；恢复后无需重新加载即自动清除。它只跟随 `routable`：`null`（首次加载之前，或加载失败之后）绝不阻断，否则一个慢的宿主就会锁死一个本来能用的编辑器；目录成员关系同样不阻断，因为一条仍在服务、只是不再公布该模型的路由不在分组里，却完全可用。触发器自己的 `Select model` 回退仍然覆盖那种情形——那是显示，不是闸门。
+
 目录按会话惰性解析（`ctx.models.directoryFor(sessionId)`），随会话作用域一并释放。已寻址 subagent 会话不公开任一入口，其目录会拒绝加载、选择与重新连接刷新，因为绑定到 agent（智能体）的普通模型 RPC 会在直接 parent 继续执行 seam 之外激活持久化 child 历史。
 
 `/client` 导出面为插件本体（`apply`/`inject`）、`ModelService`、`ModelDirectory` 及其状态形状、slot 注入面类型。

packages/client/ui-model/src/client/directory.ts

@@ -15,6 +15,14 @@ import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
 export interface ModelDirectoryState {
   /** Target the host reports for the next assembled step; null before the first load. */
   current: ModelTarget | null
+  /**
+   * Whether an adapter serves the current target's route, as the host reports
+   * it — null before the first load, which is NOT the same as blocked. Read
+   * this rather than "current matches no group": catalog membership is
+   * advisory, so a route serving a model it stopped advertising is missing
+   * from the groups yet perfectly usable.
+   */
+  routable: boolean | null
   /** Successfully loaded provider groups (last good load). */
   groups: readonly ModelProviderGroup[]
   /** Provider-local failures from the last load; usable groups stay usable. */
@@ -29,7 +37,7 @@ export interface ModelDirectoryState {
 export class ModelDirectory {
   /** The shared snapshot both entries render from (uSES-safe store). */
   readonly store: SnapshotStore<ModelDirectoryState> = createSnapshotStore<ModelDirectoryState>({
-    current: null, groups: [], failures: [], status: 'idle', error: null,
+    current: null, routable: null, groups: [], failures: [], status: 'idle', error: null,
   })
 
   /** Latest operation wins; an older response never overwrites a newer one. */
@@ -65,9 +73,10 @@ export class ModelDirectory {
       this.store.update((s) => { s.status = 'error'; s.error = `${result.error.code}: ${result.error.message}` })
       throw new Error(`session.models failed: ${result.error.code}: ${result.error.message}`)
     }
-    const { current, groups, failures } = result.value
+    const { current, routable, groups, failures } = result.value
     this.store.update((s) => {
       s.current = current
+      s.routable = routable
       s.groups = groups
       s.failures = failures
       s.status = 'ready'
@@ -102,7 +111,14 @@ export class ModelDirectory {
       this.store.update((s) => { s.status = 'error'; s.error = `${result.error.code}: ${result.error.message}` })
       throw new Error(`session.selectModel failed: ${result.error.code}: ${result.error.message}`)
     }
-    this.store.update((s) => { s.current = result.value.selected; s.status = 'ready'; s.error = null })
+    // The Host validated the route before accepting it, so a selection that
+    // landed is by construction one it can serve.
+    this.store.update((s) => {
+      s.current = result.value.selected
+      s.routable = true
+      s.status = 'ready'
+      s.error = null
+    })
   }
 
   /**
@@ -115,6 +131,7 @@ export class ModelDirectory {
     ++this.generation
     this.store.update((s) => {
       s.current = null
+      s.routable = null
       s.groups = []
       s.failures = []
       s.status = 'idle'

packages/client/ui-model/src/client/index.ts

@@ -105,14 +105,16 @@ export const inject = ['command', 'connection', 'locale', 'sessions', 'slots']
  * @param ctx - client root context.
  */
 export function apply(ctx: ClientContext): void {
-  ctx.plugin(ModelService)
-
   ctx.effect(() => ctx.locale.register(NS, { zh, en }), 'ui-model: dictionaries')
 
   // Non-slot faces (the command description, the popup option builder) read
   // through the bound translate; the seat component reads the standard seat.
   const t = ctx.locale.bind(NS)
 
+  // The composer-block reason is this plugin's own copy, read at raise time so
+  // a locale change reaches the next publish.
+  ctx.plugin(ModelService, { blockReason: () => t('blocked.composer') })
+
   // Entry 1: the /model popupSelect over the shared directory. The command
   // description is registry-held text: it reads t() once at registration and
   // refreshes only on re-registration, not on locale change.

packages/client/ui-model/src/client/locales.ts

@@ -25,6 +25,7 @@ export const zh = {
   'action.reload': '重新加载',
   'warning.groupLoad': '{name} 加载失败：{message}',
   'empty.models': '没有可用的模型。',
+  'blocked.composer': '当前模型不可用，请先选择模型',
   'empty.efforts': '当前模型未提供推理等级。',
 } satisfies Record<string, string>
 
@@ -48,5 +49,6 @@ export const en = {
   'action.reload': 'Reload',
   'warning.groupLoad': '{name} failed to load: {message}',
   'empty.models': 'No models available.',
+  'blocked.composer': 'This model is unavailable — select one to continue',
   'empty.efforts': 'This model provides no reasoning effort levels.',
 } satisfies Record<ModelKey, string>

packages/client/ui-model/src/client/service.ts

@@ -36,11 +36,16 @@ export class ModelService extends Service {
 
   private readonly live: LiveState = { directories: new Map() }
 
+  /** Localized composer-block copy; this plugin owns the string it raises. */
+  private readonly blockReason: () => string
+
   /**
    * @param ctx - owning root context (the service registers itself as `models`).
+   * @param config - the bound translator for this plugin's own dictionary.
    */
-  constructor(ctx: Context) {
+  constructor(ctx: Context, config: { blockReason: () => string }) {
     super(ctx, 'models')
+    this.blockReason = config.blockReason
     ctx.on('connection/reset', () => {
       for (const directory of this.live.directories.values()) directory.resetConnected()
     })
@@ -74,6 +79,27 @@ export class ModelService extends Service {
       () => sessions.subagentAddress(sessionId) === undefined,
     )
     live.directories.set(sessionId, directory)
+    // The composer cannot read this plugin (the dependency runs one way), so
+    // the block is pushed: the Host says whether an adapter serves the
+    // session's route, and only a definite `false` makes the input inert.
+    // `null` — before the first load, or after one failed — must not, or a
+    // slow or unreachable Host would lock a working composer.
+    const conversation = this.ctx.get('conversation')
+    if (conversation !== undefined) {
+      const publish = (): void => {
+        conversation.blocks.set(sessionId, directory.store.getSnapshot().routable === false
+          ? { reason: this.blockReason() }
+          : undefined)
+      }
+      publish()
+      actx.effect(() => {
+        const stop = directory.store.subscribe(publish)
+        return () => {
+          stop()
+          conversation.blocks.set(sessionId, undefined)
+        }
+      }, 'ui-model: composer block')
+    }
     actx.effect(() => () => {
       directory.dispose()
       live.directories.delete(sessionId)

packages/client/ui-model/tests/browser-plugin.spec.ts

@@ -17,6 +17,7 @@ import type { ModelTarget } from '@deepseek-ai/dsh-client-connection/client'
 import type { CommandContribution, SelectOption } from '@deepseek-ai/dsh-client-ui-command/client'
 import type { ModelSelectInjected } from '../src/client/slots.ts'
 import { apply, inject } from '../src/client/index.ts'
+import { zh } from '../src/client/locales.ts'
 
 const sid = (k: string): SessionId => k as SessionId
 
@@ -59,7 +60,9 @@ async function bench() {
   ctx.provide('connection', { api: { sessions: {
     models: () => {
       calls.models += 1
-      return Promise.resolve({ result: { ok: true as const, value: { current, groups: GROUPS, failures: [] } } })
+      return Promise.resolve({
+        result: { ok: true as const, value: { current, routable, groups: GROUPS, failures: [] } },
+      })
     },
     selectModel: (payload: { provider: string; model: string; reasoningEffort?: string }) => {
       calls.select += 1
@@ -73,6 +76,15 @@ async function bench() {
       return Promise.resolve({ result: { ok: true as const, value: { selected: current } } })
     },
   } } })
+  // Whether the Host reports an adapter for the current route; the composer
+  // block follows this, never catalog membership.
+  let routable = true
+  const blocks = new Map<SessionId, { reason: string } | undefined>()
+  ctx.provide('conversation', {
+    blocks: {
+      set: (id: SessionId, block: { reason: string } | undefined) => { blocks.set(id, block) },
+    },
+  })
   let contribution: CommandContribution | undefined
   ctx.provide('command', {
     register(c: CommandContribution) {
@@ -115,6 +127,8 @@ async function bench() {
     hostCurrent: () => current,
     setHostCurrent: (target: ModelTarget) => { current = target },
     address: (id: SessionId) => { addressed.add(id) },
+    setRoutable: (next: boolean) => { routable = next },
+    blockOf: (key: string) => blocks.get(sid(key)),
   }
 }
 
@@ -217,6 +231,63 @@ describe('ui-model dual entry', () => {
     expect(face2.directory).not.toBe(face1.directory)
   })
 
+  it('blocks the composer only once the Host reports the route unservable', async () => {
+    const b = await bench()
+    b.mint('s1')
+    const face = b.seat().inject!(sid('s1'))
+
+    // Before the first load nothing is known. `null` is not `false`: a slow
+    // or unreachable Host must never lock a working composer.
+    expect(b.blockOf('s1')).toBeUndefined()
+    face.load()
+    await Promise.resolve()
+    await Promise.resolve()
+    expect(b.blockOf('s1')).toBeUndefined()
+
+    b.setRoutable(false)
+    b.ctx.emit('models/changed')
+    await Promise.resolve()
+    await Promise.resolve()
+    expect(b.blockOf('s1')?.reason).toBe(zh['blocked.composer'])
+
+    // Recovering clears it without a reload of the surface.
+    b.setRoutable(true)
+    b.ctx.emit('models/changed')
+    await Promise.resolve()
+    await Promise.resolve()
+    expect(b.blockOf('s1')).toBeUndefined()
+  })
+
+  it('never blocks on catalog membership alone', async () => {
+    const b = await bench()
+    b.mint('s1')
+    const face = b.seat().inject!(sid('s1'))
+    // A model the route serves but no longer advertises: the seat prompts for
+    // a selection, the composer stays usable. Blocking here would break a
+    // supported configuration (a narrowed `models` list over a live route).
+    b.setHostCurrent({ provider: 'deepseek-official', model: 'unlisted' })
+    face.load()
+    await Promise.resolve()
+    await Promise.resolve()
+    const snapshot = face.directory.getSnapshot()
+    expect(snapshot.groups.flatMap(group => group.models.map(model => model.id))).not.toContain('unlisted')
+    expect(b.blockOf('s1')).toBeUndefined()
+  })
+
+  it('clears its block when the session scope goes', async () => {
+    const b = await bench()
+    const scope = b.mint('s1')
+    b.setRoutable(false)
+    const face = b.seat().inject!(sid('s1'))
+    face.load()
+    await Promise.resolve()
+    await Promise.resolve()
+    expect(b.blockOf('s1')).toBeDefined()
+
+    await scope.fiber.dispose()
+    expect(b.blockOf('s1')).toBeUndefined()
+  })
+
   it('an unknown session fails loud at the seat inject', async () => {
     const b = await bench()
     expect(() => b.seat().inject!(sid('ghost'))).toThrow(/resolved no scope/)

packages/client/ui-model/tests/model-select.spec.tsx

@@ -32,6 +32,7 @@ const reasoning = {
 function state(overrides: Partial<ModelDirectoryState> = {}): ModelDirectoryState {
   return {
     current: { provider: 'deepseek-official', model: 'deepseek-v4-flash' },
+    routable: true,
     groups: [{
       id: 'deepseek-official',
       name: 'DeepSeek',

packages/client/ui-models/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/ui-models/README.md
-README.md: 06c60b8bf6e16f3aeab422b12851cf7d39b13ab6
-README.zh.md: 5ff458820a5da225a0ebd05e91f3e55a8cb764b8
+README.md: 66f23d3f77adae23fcebd3adbb6c5c47ce16ae2f
+README.zh.md: dcb35c624aca73b558532210750f684e5cc54e85

packages/client/ui-models/README.md

@@ -4,7 +4,7 @@ English | [中文](README.zh.md)
 
 Models settings plugin: the provider configuration page and official-DeepSeek conditional onboarding step. It joins three wire domains into one shared snapshot — `llm.providers` (the configurable-provider directory with each route's live/dormant state), `settings.describe` (serialized schemas, layered redacted values, secret slots), and `credentials.describe` (value-free configured/source/writable badges) — and renders provider rows with one editor card at a time, without presenting route liveness as provider status.
 
-Rows are the *configured* providers (their profile resolves in the owning namespace); a whole-section provider whose key is not configured anywhere (the first-run DeepSeek posture) renders as its open setup card instead of a row, and the add flow is a card carrying the dormant-directory provider select — a bare-mounted `llm-pi-ai` offers its whole installed catalog before any route exists. The pi-ai card additionally edits that route's **model list** and can ask the provider what it serves. A row labels API-key state with a green solid dot only when a referenced credential is confirmed configured, and with a red solid dot only when a named reference is confirmed missing; reference-free provider-native authentication and unavailable credential enrichment remain unmarked. The editor is a hand-written card per adapter family: the primary field is a single **API key** input — the page never asks for an environment-variable name; a typed key stores **write-only** through `credentials.set` under the profile's reference, deriving `<ROUTE>_API_KEY` when the profile has none, and the pi-ai profile records that derivation as `apiKeyEnv`, so `settings.yaml` never carries a key value. Leaving a new pi-ai provider's key blank saves a reference-free profile and therefore preserves provider-native authentication such as the Bedrock credential chain or Vertex ADC. A successful Apply emits a local accessible status message without echoing secret material. The collapsed 自定义设置 fold carries the curated extras — `baseURL` for both families (the deepseek placeholder shows the public endpoint), `reasoningEffort` (deepseek) or `reasoning` (pi-ai), and each adapter's model catalog. Each DeepSeek row edits `id`, optional display `name`, and optional `contextWindow`; existing fields outside that curated set survive edits, while every other profile field stays owned by `settings.yaml`. A row is deletable only when the user layer alone carries it (removal restores the composition base), and its localized confirmation dialog names the provider in the title, description, and final action.
+Rows are the *configured* providers (their profile resolves in the owning namespace); a whole-section provider whose key is not configured anywhere (the first-run DeepSeek posture) renders as its open setup card instead of a row, and the add flow is a card carrying the dormant-directory provider select — a bare-mounted `llm-pi-ai` offers its whole installed catalog before any route exists. The pi-ai card additionally edits that route's **model list** and can ask the provider what it serves. A row labels API-key state with a green solid dot only when a referenced credential is confirmed configured, and with a red solid dot only when a named reference is confirmed missing; reference-free provider-native authentication and unavailable credential enrichment remain unmarked. The editor is a hand-written card per adapter family: the primary field is a single **API key** input — the page never asks for an environment-variable name; a typed key stores **write-only** through `credentials.set` under the profile's reference, deriving `<ROUTE>_API_KEY` when the profile has none, and the pi-ai profile records that derivation as `apiKeyEnv`, so `settings.yaml` never carries a key value. Leaving a new pi-ai provider's key blank saves a reference-free profile and therefore preserves provider-native authentication such as the Bedrock credential chain or Vertex ADC. A successful Apply emits a local accessible status message without echoing secret material. The collapsed 自定义设置 fold carries the curated extras — `baseURL` for both families (the deepseek placeholder shows the public endpoint) and each adapter's model catalog. Reasoning effort is deliberately NOT among them: it is a per-model capability and the models under one provider disagree about which levels they accept, so a provider-scoped control could only be set to a value some of them reject — which took the whole provider out of the model picker. The composer's model picker offers each model its own levels, and a switch there records provider, model, and effort together as the default for the next session. The profile field stays in `settings.yaml` for a deployment that knows its route. Each DeepSeek row edits `id`, optional display `name`, and optional `contextWindow`; existing fields outside that curated set survive edits, while every other profile field stays owned by `settings.yaml`. A row is deletable only when the user layer alone carries it (removal restores the composition base), and its localized confirmation dialog names the provider in the title, description, and final action. A row is tagged **Custom** when the directory entry says the owning adapter ships nothing under that key. The tag follows that answer alone: having a stored profile does not make a route custom — narrowing a shipped provider's models stores one too — and an adapter that reports nothing leaves its rows untagged rather than being read as shipped.
 
 The DeepSeek step projects `deepseek-official` readiness from that same joined snapshot after earlier onboarding pages complete. It recognizes the official adapter through its `llm-deepseek` configurable-provider declaration, so an undeclared live route with the same provider id is not treated as repairable configuration. A configured credential reference completes the step without rendering, including a read-only launch-environment credential. Only a mounted, active adapter with a missing writable reference shows the page that opens Settings on Models, whose existing setup card exclusively owns key input and `credentials.set`; the step never holds a secret. An absent adapter, inactive route, failed join, read-only deployment, or unusable settings or credential capability completes the step without rendering so onboarding cannot block the product; Models remains the diagnostic surface.
 
@@ -16,7 +16,7 @@ A pi-ai profile's `models` list is edited on the card: one row per model showing
 
 **Fetch available models** asks `llm.discoverModels` about the endpoint the form **currently shows**, including a base URL edited but not yet saved and a key typed but not yet stored, so adding a provider is one pass instead of save-then-return. The reply opens a picker rather than being written: candidates already configured start unchecked, so adopting a selection never overwrites a capacity the user corrected. A provider that cannot be interrogated is a detour, not a dead end — the adapter's own message appears beside the rows, which stay editable by hand.
 
-**Add a custom provider** declares a route pi-ai does not ship. It is its own card rather than the editor with extra fields, because the route id is being chosen here and the settings address does not exist until it is: one `settings.mutate` sets the whole profile at `providers.<route>`, and the key travels separately through `credentials.set` under the same `<ROUTE>_API_KEY` derivation an existing provider uses. What a hand-declared route cannot default gates the create button — a unique **Provider ID**, an endpoint, a protocol, and at least one uniquely-identified model — so the failure names the field while the user is still looking at it. Capacities do not gate it: the adapter's fallbacks size a model the endpoint described by id alone, which is what most listings return. The protocol choices are read out of the namespace's own schema rather than a wire field or a constant, so they cannot drift from the ones the adapter accepts.
+**Add a custom provider** declares a route pi-ai does not ship. It is its own card rather than the editor with extra fields, because the route id is being chosen here and the settings address does not exist until it is: one `settings.mutate` sets the whole profile at `providers.<route>`, and the key travels separately through `credentials.set` under the same `<ROUTE>_API_KEY` derivation an existing provider uses. What a hand-declared route cannot default gates the create button — a unique **Provider ID**, an endpoint, a protocol, and at least one uniquely-identified model — so the failure names the field while the user is still looking at it. The id must start with a lowercase letter, because it is also the stem of the derived credential reference and a reference is a POSIX shell identifier: a digit-leading id otherwise passes every check this card makes and then fails at the credential seam with a raw regular expression. Capacities do not gate it: the adapter's fallbacks size a model the endpoint described by id alone, which is what most listings return. The protocol choices are read out of the namespace's own schema rather than a wire field or a constant, so they cannot drift from the ones the adapter accepts. The card records the conventional `apiKeyEnv` reference only when a key is typed, the same rule the editor applies, so a route declared for provider-native authentication is not born pointing at a reference nothing will ever set. When the profile write lands but the key write fails, the provider already exists: the card settles the fields describing it, retries the credential alone — re-running the profile write would carry the revision that write just superseded, so the Host would answer `settings-conflict` and the key could never be stored from here — and reports the created provider even if the user then cancels.
 
 ## Model Experience
 

packages/client/ui-models/README.zh.md

@@ -4,7 +4,7 @@
 
 模型设置插件：提供方配置页和按条件显示的 DeepSeek 官方首次使用引导步骤。它把三个协议领域汇聚为一个共享快照：`llm.providers`（可配置提供方目录，含每条路由的存活／休眠状态）、`settings.describe`（序列化 schema、分层脱敏值、secret 槽位）与 `credentials.describe`（不含值的 configured/source/writable 徽标）；页面据此渲染提供方行，一次只展开一张编辑卡片，且不把路由存活状态呈现为提供方状态。
 
-行是*已配置*的提供方（其 profile 在所属 namespace 中解析得出）；密钥未在任何地方配置的整分节提供方（DeepSeek 的首次运行姿态）会渲染为其展开的设置卡片而非一行，「新增」流程则是一张承载休眠目录提供方选择框的卡片——裸挂载的 `llm-pi-ai` 在任何路由存在之前就能提供其完整的已安装 catalog。pi-ai 卡片还会编辑该路由的**模型列表**，并可以询问提供方它服务什么。只有确认引用的凭据已配置时，行才会以绿色实心点标示 API 密钥状态；只有确认具名引用缺失时，才会以红色实心点标示。无引用的提供方原生认证以及无法取得凭据补充信息时都不显示状态点。编辑器是每个适配器家族各一张的手写卡片：主字段是单独一个 **API 密钥**输入框——页面从不询问环境变量名；键入的密钥经 `credentials.set` 以**只写**方式存入 profile 的引用之下，profile 没有引用时便派生 `<ROUTE>_API_KEY`，pi-ai profile 会把这次派生记录为 `apiKeyEnv`，因此 `settings.yaml` 从不携带密钥值。为新的 pi-ai 提供方留空密钥会保存一个不带引用的 profile，因此能保留提供方原生认证，例如 Bedrock 凭据链或 Vertex ADC。「应用」成功后会发出本地无障碍状态消息，且绝不回显任何机密内容。收起的「自定义设置」折叠区承载精选的额外字段——两个家族都有 `baseURL`（deepseek 的占位符显示公共端点），另有 `reasoningEffort`（deepseek）或 `reasoning`（pi-ai），以及各适配器自己的模型目录。每条 DeepSeek 模型行可编辑 `id`、可选的显示名称 `name` 与可选的 `contextWindow`；精选集合以外的现有字段会在编辑后保留，其余每个 profile 字段仍归 `settings.yaml` 所有。只有当某行仅由用户层承载时它才可删除（删除会还原组合 base），其本地化确认对话框会在标题、说明和最终操作中点名该提供方。
+行是*已配置*的提供方（其 profile 在所属 namespace 中解析得出）；密钥未在任何地方配置的整分节提供方（DeepSeek 的首次运行姿态）会渲染为其展开的设置卡片而非一行，「新增」流程则是一张承载休眠目录提供方选择框的卡片——裸挂载的 `llm-pi-ai` 在任何路由存在之前就能提供其完整的已安装 catalog。pi-ai 卡片还会编辑该路由的**模型列表**，并可以询问提供方它服务什么。只有确认引用的凭据已配置时，行才会以绿色实心点标示 API 密钥状态；只有确认具名引用缺失时，才会以红色实心点标示。无引用的提供方原生认证以及无法取得凭据补充信息时都不显示状态点。编辑器是每个适配器家族各一张的手写卡片：主字段是单独一个 **API 密钥**输入框——页面从不询问环境变量名；键入的密钥经 `credentials.set` 以**只写**方式存入 profile 的引用之下，profile 没有引用时便派生 `<ROUTE>_API_KEY`，pi-ai profile 会把这次派生记录为 `apiKeyEnv`，因此 `settings.yaml` 从不携带密钥值。为新的 pi-ai 提供方留空密钥会保存一个不带引用的 profile，因此能保留提供方原生认证，例如 Bedrock 凭据链或 Vertex ADC。「应用」成功后会发出本地无障碍状态消息，且绝不回显任何机密内容。收起的「自定义设置」折叠区承载精选的额外字段——两个家族都有 `baseURL`（deepseek 的占位符显示公共端点），以及各适配器自己的模型目录。推理等级刻意**不在**其中：它是按模型的能力，而同一提供方下各模型接受的档位并不一致，因此提供方级的控件只可能被设成其中一些模型会拒绝的值——那会让整个提供方从模型选择器里消失。输入框的模型选择器为每个模型提供它自己的档位，在那里切换会把提供方、模型、推理等级一并记为下一个会话的默认值。profile 字段仍留在 `settings.yaml`，供清楚自己路由的部署使用。每条 DeepSeek 模型行可编辑 `id`、可选的显示名称 `name` 与可选的 `contextWindow`；精选集合以外的现有字段会在编辑后保留，其余每个 profile 字段仍归 `settings.yaml` 所有。只有当某行仅由用户层承载时它才可删除（删除会还原组合 base），其本地化确认对话框会在标题、说明和最终操作中点名该提供方。当目录条目表明拥有该路由的适配器在这个键下什么都没有时，该行会带上 **自定义** 标签。标签只跟随这个答案：存了 profile 并不使一条路由成为自定义——收窄一个内置提供方的模型同样会存下 profile——而什么都不回答的适配器，其路由保持无标签，不会被当成内置。
 
 前序首次使用引导页面完成后，DeepSeek 步骤会从同一个联接快照得出 `deepseek-official` 的就绪状态。它通过 `llm-deepseek` 的可配置提供方声明识别官方适配器，因此同 id 但未声明的存活路由不属于可修复配置。凭据引用已配置时，该步骤会直接完成而不渲染，其中包括来自启动环境且只读的凭据。只有已挂载且活跃、引用可写但尚未配置的适配器才会显示前往「设置」Models 分区的页面；密钥输入和 `credentials.set` 仅由该分区已有的设置卡片负责，该步骤绝不持有 secret。适配器缺失、路由不活跃、联接失败、部署只读或设置／凭据能力不可用时，该步骤均不渲染并直接完成，以免首次使用引导阻塞产品；Models 页仍是诊断界面。
 
@@ -16,7 +16,7 @@ pi-ai profile 的 `models` 列表就在卡片上编辑：一行一个模型，
 
 **获取可用模型**会针对表单**当前显示**的端点调用 `llm.discoverModels`，包括已修改但尚未保存的 API 地址和已键入但尚未存储的密钥，因此新增一个提供方是一趟走完，而不是「先保存再回来」。回复会打开一个选择框而不是直接写入：已配置过的候选默认不勾选，因此采纳一次选择绝不会覆盖用户已更正的容量。无法被询问的提供方只是绕路而非死路——适配器自己的消息会显示在各行旁边，而这些行仍可手工编辑。
 
-**添加自定义提供方**用来声明 pi-ai 未提供的路由。它是独立的一张卡片而非在编辑器上加字段，因为路由 id 正是在这里被*选定*的，而在选定之前 settings 地址并不存在：一次 `settings.mutate` 在 `providers.<route>` 上设置整个 profile，密钥则经 `credentials.set` 单独传递，使用与既有提供方相同的 `<ROUTE>_API_KEY` 派生。手工声明的路由无法默认的东西会门控创建按钮——唯一的 **Provider ID**、端点、协议，以及至少一个由唯一标识的模型——因此失败会在用户仍看着该字段时点名它。容量不参与门控：端点只按 id 描述的模型（这正是多数列表返回的形态）由适配器的回退值定尺寸。协议选项读自该 namespace 自己的 schema，而非某个协议字段或常量，因此它们不会与适配器实际接受的集合发生漂移。
+**添加自定义提供方**用来声明 pi-ai 未提供的路由。它是独立的一张卡片而非在编辑器上加字段，因为路由 id 正是在这里被*选定*的，而在选定之前 settings 地址并不存在：一次 `settings.mutate` 在 `providers.<route>` 上设置整个 profile，密钥则经 `credentials.set` 单独传递，使用与既有提供方相同的 `<ROUTE>_API_KEY` 派生。手工声明的路由无法默认的东西会门控创建按钮——唯一的 **Provider ID**、端点、协议，以及至少一个由唯一标识的模型——因此失败会在用户仍看着该字段时点名它。该 id 必须以小写字母开头，因为它同时是派生凭据引用的词干，而引用是 POSIX shell 标识符：数字开头的 id 否则会通过这张卡片的每一项检查，然后在凭据 seam 上以一条用户无从下手的原始正则失败。容量不参与门控：端点只按 id 描述的模型（这正是多数列表返回的形态）由适配器的回退值定尺寸。协议选项读自该 namespace 自己的 schema，而非某个协议字段或常量，因此它们不会与适配器实际接受的集合发生漂移。只有键入了密钥，这张卡片才记录约定的 `apiKeyEnv` 引用，与编辑器同一条规则，因此一条为提供方原生认证声明的路由不会一出生就指向一个永远不会被设置的引用。当 profile 写入成功而密钥写入失败时，提供方其实已经存在：卡片会把描述它的字段定住，只重试凭据——再跑一次 profile 写入会带着刚被自己这次写入取代的 revision，宿主将以 `settings-conflict` 应答，密钥就再也无法从这里存下——并且即使用户随后取消，也照实报告提供方已创建。
 
 ## 模型体验
 

packages/client/ui-models/src/client/CustomProviderCard.tsx

@@ -13,6 +13,12 @@
  * The three fields a hand-declared route cannot default — endpoint, protocol,
  * and at least one model — are required here rather than at load, so the
  * failure names the field while the user is still looking at it.
+ *
+ * There is deliberately no reasoning-effort control, here or on the editor
+ * card: effort is a per-MODEL capability, and the models under one provider
+ * disagree about it, so a provider-scoped control can only be set to a value
+ * some of them reject. The composer's model picker offers each model its own
+ * levels instead.
  */
 
 import { useState } from 'react'
@@ -30,8 +36,15 @@ import styles from './ModelsSection.module.css'
 /** The settings namespace a hand-declared provider is written into. */
 const NS = 'llm-pi-ai'
 
-/** A route id usable as a settings key and as the stem of a credential name. */
-const ROUTE_PATTERN = /^[a-z0-9]+(?:-[a-z0-9]+)*$/
+/**
+ * A route id usable as a settings key AND as the stem of a credential name.
+ * The leading letter is the second half of that: `deriveKeyRef` uppercases the
+ * id and replaces every non-alphanumeric run with `_`, and a credential
+ * reference is a POSIX shell identifier, which cannot start with a digit. A
+ * digit-leading id passes every check this card makes and then fails at the
+ * credential seam with a raw regular expression the user cannot act on.
+ */
+const ROUTE_PATTERN = /^[a-z][a-z0-9]*(?:-[a-z0-9]+)*$/
 
 /** Props of {@link CustomProviderCard}. */
 export interface CustomProviderCardProps {
@@ -73,7 +86,15 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
   const [models, setModels] = useState<readonly ModelDraft[]>([])
   const [busy, setBusy] = useState(false)
   const [failure, setFailure] = useState<string | undefined>(undefined)
+  /**
+   * The profile write landed. Only the key write can still be outstanding, so
+   * the fields that describe the provider are settled and the retry path is
+   * the credential alone.
+   */
+  const [committed, setCommitted] = useState(false)
   const disabled = props.readOnly || busy
+  /** Everything but the key stops being editable once the provider exists. */
+  const profileDisabled = disabled || committed
 
   const routeInvalid = route.length > 0 && !ROUTE_PATTERN.test(route)
   const routeTaken = taken.includes(route)
@@ -89,14 +110,17 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
   const ready = route.length > 0 && !routeInvalid && !routeTaken
     && baseURL.length > 0 && models.length > 0 && modelFailure === undefined
     && keyFailure === undefined
-  // The one blocked gate worth a line under the form. The route id is omitted
-  // because its own field already explains itself, and a satisfied card says
+  // The one blocked gate worth a line under the form. A satisfied card says
   // nothing at all rather than printing an empty paragraph.
   const hint = failure !== undefined || ready
     // The key field prints its own failure directly beneath itself, so a card
     // blocked only by the key stays silent here rather than answering with the
     // next unmet gate — which is satisfied, and reads as a second, false fault.
     || keyFailure !== undefined
+    // Same for the route id, and it must be tested rather than assumed: the
+    // fallback arm below reads "no models yet", so an unmet route gate used to
+    // fall through to it and contradict the filled-in list right above.
+    || route.length === 0 || routeInvalid || routeTaken
     ? undefined
     : baseURL.length === 0
       ? t('customNeedsBaseUrl')
@@ -107,26 +131,38 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
   /** Perform the create, returning a failure message or undefined. */
   const createOnce = async (): Promise<string | undefined> => {
     const keyRef = deriveKeyRef(route)
-    const profile = {
-      ...displayName.length === 0 ? {} : { displayName },
-      apiKeyEnv: keyRef,
-      api: protocol,
-      baseURL,
-      models: models.map(model => ({ ...model })),
+    const storesKey = keyValue.length > 0
+    if (!committed) {
+      const profile = {
+        ...displayName.length === 0 ? {} : { displayName },
+        // The profile names the conventional reference only when this card is
+        // about to store a key, matching the editor: a route declared with the
+        // key left blank keeps its provider-native auth path (a credential
+        // chain, ADC) instead of resolving a reference nothing ever sets.
+        ...storesKey ? { apiKeyEnv: keyRef } : {},
+        api: protocol,
+        baseURL,
+        models: models.map(model => ({ ...model })),
+      }
+      const response = await api.settings.mutate({
+        ns: NS,
+        ops: [{ op: 'set', path: ['providers', route], value: profile }],
+        // `taken` is a snapshot too, so the id check alone cannot see a route
+        // declared after this card opened; the revision makes that race a
+        // `settings-conflict` instead of a write over the other profile.
+        expectedRevision: openedAt,
+      })
+      if (!response.result.ok) return response.result.error.message
+      // The provider now exists. A retry after the key write below fails must
+      // not re-run this mutate: the revision it holds is the one this write
+      // just superseded, so the Host would answer `settings-conflict` and the
+      // key could never be stored from this card at all.
+      setCommitted(true)
     }
-    const response = await api.settings.mutate({
-      ns: NS,
-      ops: [{ op: 'set', path: ['providers', route], value: profile }],
-      // `taken` is a snapshot too, so the id check alone cannot see a route
-      // declared after this card opened; the revision makes that race a
-      // `settings-conflict` instead of a write over the other profile.
-      expectedRevision: openedAt,
-    })
-    if (!response.result.ok) return response.result.error.message
-    if (keyValue.length > 0) {
+    if (storesKey) {
       const stored = await api.credentials.set({ ref: keyRef, value: keyValue })
       // The profile landed; saying the key did not is the only honest report,
-      // and the row is now editable so the key can be entered again there.
+      // and the retry above now goes straight back to this write.
       if (!stored.result.ok) return stored.result.error.message
     }
     return undefined
@@ -164,13 +200,15 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
           value={route}
           placeholder="acme-gateway"
           aria-label={t('customRoute')}
-          disabled={disabled}
+          disabled={profileDisabled}
           onChange={(event) => { setRoute(event.target.value) }}
         />
       </div>
-      <p className={styles['advancedHint']}>
-        {routeInvalid ? t('customRouteInvalid') : routeTaken ? t('customRouteTaken') : t('customRouteHint')}
-      </p>
+      {/* A rejected id reads as a fault, not as guidance — the same split the
+          key field below already makes between its failure and its hint. */}
+      {routeInvalid || routeTaken
+        ? <p className={styles['error']}>{t(routeInvalid ? 'customRouteInvalid' : 'customRouteTaken')}</p>
+        : <p className={styles['advancedHint']}>{t('customRouteHint')}</p>}
       <div className={styles['field']}>
         <span className={styles['fieldLabel']}>{t('customDisplayName')}</span>
         <input
@@ -179,7 +217,7 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
           value={displayName}
           placeholder={route.length === 0 ? t('customDisplayName') : route}
           aria-label={t('customDisplayName')}
-          disabled={disabled}
+          disabled={profileDisabled}
           onChange={(event) => { setDisplayName(event.target.value) }}
         />
       </div>
@@ -191,7 +229,7 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
           value={baseURL}
           placeholder="https://gateway.example/v1"
           aria-label={t('baseUrl')}
-          disabled={disabled}
+          disabled={profileDisabled}
           onChange={(event) => { setBaseURL(event.target.value) }}
         />
       </div>
@@ -201,7 +239,7 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
           className={styles['input']}
           value={protocol}
           aria-label={t('customApi')}
-          disabled={disabled}
+          disabled={profileDisabled}
           onChange={(event) => { setProtocol(event.target.value) }}
         >
           {protocols.map(choice => <option key={choice} value={choice}>{choice}</option>)}
@@ -238,7 +276,7 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
         probeBlocked={keyFailure === 'keyBlank' ? 'keyBlankNew' : keyFailure}
         api={api}
         t={t}
-        disabled={disabled}
+        disabled={profileDisabled}
       />
       {failure !== undefined ? <p className={styles['error']}>{failure}</p> : null}
       {/* Only the gates with something to say render; the route-id gate has its
@@ -250,7 +288,7 @@ export function CustomProviderCard(props: CustomProviderCardProps): ReactNode {
         submitDisabled={disabled || !ready}
         submitLabel="create"
         submitBusyLabel="creating"
-        onCancel={() => { props.onClose(false) }}
+        onCancel={() => { props.onClose(committed) }}
         onSubmit={() => { void create() }}
       />
     </div>

packages/client/ui-models/src/client/ModelsSection.module.css

@@ -86,6 +86,20 @@
   color: var(--dsw-alias-label-primary);
 }
 
+/* Reads as an annotation on the name, not as a second name: caption size and
+   the secondary label tone, so it never competes with the row's own title. It
+   sits inside `rowIdentity` with the credential dot, which is what keeps it
+   beside the name rather than drifting toward the actions. */
+.rowTag {
+  flex: none;
+  padding: 1px 6px;
+  border: 1px solid var(--dsw-alias-border-l3);
+  border-radius: 4px;
+  font-size: 11px;
+  line-height: 16px;
+  color: var(--dsw-alias-label-secondary);
+}
+
 .credentialDot {
   box-sizing: border-box;
   display: inline-block;

packages/client/ui-models/src/client/ModelsSection.tsx

@@ -271,6 +271,12 @@ function Loaded({ injected }: { injected: ModelsSectionInjected }): ReactNode {
               <div className={styles['rowHead']}>
                 <span className={styles['rowIdentity']}>
                   <span className={styles['rowName']}>{row.entry.displayName}</span>
+                  {/* Only the adapter can tell a hand-declared route from a
+                      shipped one it also has a stored profile for, so the tag
+                      follows its answer and stays off when it gives none. */}
+                  {row.entry.declared === true
+                    ? <span className={styles['rowTag']}>{t('customTag')}</span>
+                    : null}
                   {credentialConfigured
                     ? (
                       <span

packages/client/ui-models/src/client/ProviderEditor.tsx

@@ -7,8 +7,12 @@
  * a key is entered; a blank key materializes a reference-free profile for
  * provider-native authentication);
  * the collapsed 自定义设置 area carries the per-family extras (`baseURL` for
- * both families, `reasoningEffort` for deepseek / `reasoning` for pi-ai, and
- * DeepSeek's id/name/context-window model catalog). Everything else stays
+ * both families and DeepSeek's id/name/context-window model catalog).
+ * Reasoning effort is deliberately absent: it is a per-MODEL capability, and
+ * the models under one provider disagree about it, so a provider-scoped
+ * control can only be set to a value some of them reject. The composer's
+ * model picker offers each model its own levels; `settings.yaml` keeps the
+ * profile field for a deployment that knows its route. Everything else stays
  * owned by `settings.yaml`. Profile edits land as minimal `settings.mutate`
  * path ops against the stored section — the card names only the fields it can
  * see instead of rebuilding the whole subtree from a partial descriptor.
@@ -33,18 +37,6 @@ import styles from './ModelsSection.module.css'
 /** Per-adapter-family curated field sets (unknown namespaces get the hint alone). */
 type EditorLayout = 'deepseek' | 'pi-ai' | 'unknown'
 
-/** Reasoning vocabularies per layout; the empty option means "inherit". */
-const EFFORT_CHOICES: Record<'deepseek' | 'pi-ai', readonly string[]> = {
-  deepseek: ['off', 'high', 'max'],
-  'pi-ai': ['off', 'minimal', 'low', 'medium', 'high', 'xhigh', 'max'],
-}
-
-/** The draft key the effort select edits, per layout. */
-const EFFORT_FIELD: Record<'deepseek' | 'pi-ai', string> = {
-  deepseek: 'reasoningEffort',
-  'pi-ai': 'reasoning',
-}
-
 /** The public DeepSeek endpoint shown as the deepseek base-URL placeholder. */
 const DEEPSEEK_PUBLIC_BASE_URL = 'https://api.deepseek.com'
 
@@ -302,7 +294,6 @@ export function ProviderEditor(props: ProviderEditorProps): ReactNode {
    * unknown namespace never reaches this body.
    */
   const curatedFields = (family: 'deepseek' | 'pi-ai'): ReactNode => {
-    const effortField = EFFORT_FIELD[family]
     const customModels = getPath(draft, ['models'])
     const modelsOverridden = hasPath(draft, ['models'])
     const models = modelDrafts(modelsOverridden ? customModels : inheritedModels())
@@ -359,23 +350,6 @@ export function ProviderEditor(props: ProviderEditorProps): ReactNode {
                 }}
               />
             </div>
-            <div className={styles['field']}>
-              <span className={styles['fieldLabel']}>{t('effort')}</span>
-              <select
-                className={`${styles['input']} ${styles['selectInput']}`}
-                value={stringAt(draft, effortField) ?? ''}
-                aria-label={t('effort')}
-                disabled={disabled}
-                onChange={(event) => {
-                  setField(effortField, event.target.value === '' ? undefined : event.target.value)
-                }}
-              >
-                <option value="">{t('effortInherit')}</option>
-                {EFFORT_CHOICES[family].map(choice => (
-                  <option key={choice} value={choice}>{choice}</option>
-                ))}
-              </select>
-            </div>
             {/* Both families edit the same rows through the same contract; only
                 the extras differ — DeepSeek's inherited capacities, pi-ai's
                 endpoint interrogation. */}

packages/client/ui-models/src/client/locales.ts

@@ -35,8 +35,6 @@ export const en = {
   customized: 'Customized settings',
   baseUrl: 'Base URL',
   baseUrlDefault: 'Provider default',
-  effort: 'Reasoning effort',
-  effortInherit: 'Default',
   models: 'Models',
   modelsInherited: 'Using the adapter defaults',
   modelsCustomized: 'Customized model catalog',
@@ -75,9 +73,10 @@ export const en = {
   fetchAdopt: 'Add selected',
   customAdd: 'Add a custom provider',
   customTitle: 'Custom provider',
+  customTag: 'Custom',
   customRoute: 'Provider ID',
-  customRouteHint: 'Lowercase identifier that uniquely names this provider in requests and as its credential name.',
-  customRouteInvalid: 'Use lowercase letters, digits, and dashes.',
+  customRouteHint: 'Lowercase identifier, starting with a letter, that uniquely names this provider in requests and as its credential name.',
+  customRouteInvalid: 'Start with a lowercase letter; then lowercase letters, digits, and dashes.',
   customRouteTaken: 'A provider already uses this ID.',
   customDisplayName: 'Display name',
   customApi: 'API protocol',
@@ -129,8 +128,6 @@ export const zh: typeof en = {
   customized: '自定义设置',
   baseUrl: 'API 地址',
   baseUrlDefault: '提供方默认',
-  effort: '推理强度',
-  effortInherit: '默认',
   models: '模型目录',
   modelsInherited: '正在使用适配器默认模型',
   modelsCustomized: '已自定义模型目录',
@@ -169,9 +166,10 @@ export const zh: typeof en = {
   fetchAdopt: '添加所选',
   customAdd: '添加自定义提供方',
   customTitle: '自定义提供方',
+  customTag: '自定义',
   customRoute: 'Provider ID',
-  customRouteHint: '小写标识，在请求中唯一标识该提供方，并用于派生凭据名。',
-  customRouteInvalid: '只能使用小写字母、数字和短横线。',
+  customRouteHint: '以小写字母开头的标识，在请求中唯一标识该提供方，并用于派生凭据名。',
+  customRouteInvalid: '需以小写字母开头，之后可用小写字母、数字和短横线。',
   customRouteTaken: '已有提供方使用了这个 ID。',
   customDisplayName: '显示名称',
   customApi: 'API 协议',

packages/client/ui-models/tests/components.spec.tsx

@@ -89,13 +89,12 @@ function wireNamespaces(): SettingsNamespaceView[] {
       value: {
         apiKeyEnv: 'DEEPSEEK_API_KEY',
         baseURL: 'https://base',
-        reasoningEffort: 'high',
         defaultContextWindow: 1_000_000,
         maxTokens: 256_000,
         models: DEFAULT_DEEPSEEK_MODELS,
       },
       base: { defaultContextWindow: 1_000_000, maxTokens: 256_000, models: DEFAULT_DEEPSEEK_MODELS },
-      user: { reasoningEffort: 'high' },
+      user: { baseURL: 'https://base' },
       applies: 'live',
       secrets: [],
       revision: 0,
@@ -718,16 +717,16 @@ describe('ModelsSection', () => {
     // The old path rebuilt the whole user section to clear one inherited field.
     const { replace, update, mutate } = await mountSection()
     fireEvent.click(screen.getByText(en.customized))
-    const effort = screen.getByLabelText<HTMLSelectElement>(en.effort)
-    expect(effort.value).toBe('high')
-    fireEvent.change(effort, { target: { value: '' } })
+    const url = screen.getByLabelText<HTMLInputElement>(en.baseUrl)
+    expect(url.value).toBe('https://base')
+    fireEvent.change(url, { target: { value: '' } })
     fireEvent.click(screen.getByText(en.apply))
     await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
     expect(replace).not.toHaveBeenCalled()
     expect(update).not.toHaveBeenCalled()
     expect(mutate.mock.calls[0]?.[0]).toEqual({
       ns: 'llm-deepseek',
-      ops: [{ op: 'unset', path: ['reasoningEffort'] }],
+      ops: [{ op: 'unset', path: ['baseURL'] }],
       expectedRevision: 0,
     })
   })
@@ -784,15 +783,14 @@ describe('ModelsSection', () => {
     const urls = screen.getAllByLabelText<HTMLInputElement>(en.baseUrl)
     expect(urls).toHaveLength(2)
     expect((urls[1] as HTMLInputElement).value).toBe('https://proxy')
-    const effort = screen.getAllByLabelText<HTMLSelectElement>(en.effort)
-    fireEvent.change(effort[effort.length - 1] as HTMLSelectElement, { target: { value: 'xhigh' } })
+    fireEvent.change(urls[1] as HTMLInputElement, { target: { value: 'https://proxy/v2' } })
     fireEvent.click(screen.getAllByText(en.apply)[1] as HTMLElement)
     await waitFor(() => { expect(mutate).toHaveBeenCalledTimes(1) })
-    // Only the edited field travels: apiKeyEnv, baseURL and headers were
-    // already stored with these values, so no op restates them.
+    // Only the edited field travels: apiKeyEnv and headers were already stored
+    // with these values, so no op restates them.
     expect(mutate.mock.calls[0]?.[0]).toEqual({
       ns: 'llm-pi-ai',
-      ops: [{ op: 'set', path: ['providers', 'openai', 'reasoning'], value: 'xhigh' }],
+      ops: [{ op: 'set', path: ['providers', 'openai', 'baseURL'], value: 'https://proxy/v2' }],
       expectedRevision: 0,
     })
   })

packages/client/ui-models/tests/provider-form.spec.tsx

@@ -9,7 +9,7 @@ import { ModelsSection } from '../src/client/ModelsSection.tsx'
 import type { ModelsSectionInjected } from '../src/client/ModelsSection.tsx'
 import { CustomProviderCard } from '../src/client/CustomProviderCard.tsx'
 import { formatCapacity, parseCapacity } from '../src/client/DeepSeekModelsEditor.tsx'
-import { ModelsSettingsStore, protocolChoices } from '../src/client/store.ts'
+import { ModelsSettingsStore, deriveKeyRef, protocolChoices } from '../src/client/store.ts'
 import { en } from '../src/client/locales.ts'
 
 afterEach(cleanup)
@@ -66,6 +66,8 @@ function scriptedFace(options: {
   providers?: Record<string, unknown>
   /** User layer, when it differs from the effective section. */
   userProviders?: Record<string, unknown>
+  /** Routes the adapter reports as hand-declared; the rest come back as shipped. */
+  declaredRoutes?: readonly string[]
   discover?: ReturnType<typeof vi.fn>
   mutate?: ReturnType<typeof vi.fn>
   set?: ReturnType<typeof vi.fn>
@@ -86,6 +88,7 @@ function scriptedFace(options: {
           settingsNs: 'llm-pi-ai',
           settingsPath: ['providers', provider],
           active: true,
+          declared: options.declaredRoutes?.includes(provider) ?? false,
         })),
       }))),
       models: vi.fn(() => Promise.resolve(ok({ groups: [], failures: [] }))),
@@ -599,9 +602,59 @@ describe('endpoint interrogation', () => {
   })
 })
 
+describe('provider rows', () => {
+  it('tags the routes the adapter declared, and only those', async () => {
+    await mountSection({
+      providers: {
+        openai: { apiKeyEnv: 'OPENAI_API_KEY' },
+        'acme-gateway': { apiKeyEnv: 'ACME_GATEWAY_API_KEY', baseURL: 'https://acme.test/v1' },
+      },
+      declaredRoutes: ['acme-gateway'],
+    })
+
+    const rowOf = (provider: string): HTMLElement => {
+      const row = screen.getByText(provider).closest('li')
+      if (row === null) throw new Error(`no row for ${provider}`)
+      return row
+    }
+    expect(rowOf('acme-gateway').textContent).toContain(en.customTag)
+    // `openai` carries a stored profile too — the tag follows the adapter's
+    // catalog, not the presence of settings, so it stays off here.
+    expect(rowOf('openai').textContent).not.toContain(en.customTag)
+  })
+
+  it('shows no tag when the adapter draws no catalog distinction', async () => {
+    const scripted = scriptedFace({ providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY' } } })
+    scripted.face.llm.providers = vi.fn(() => Promise.resolve(ok({
+      providers: [{
+        provider: 'openai',
+        displayName: 'openai',
+        settingsNs: 'llm-pi-ai',
+        settingsPath: ['providers', 'openai'],
+        active: true,
+      }],
+    }))) as never
+    const controller = new ModelsSettingsStore(scripted.face as unknown as WireFace)
+    await controller.load()
+    render(<ModelsSection
+      controller={controller}
+      useSnapshot={bindSnapshotSelector(controller.store)}
+      api={scripted.face as never}
+      t={t}
+    />)
+
+    // Absent is "unknown", never "shipped": an adapter that answers nothing
+    // must not have its routes labelled either way.
+    expect(screen.queryByText(en.customTag)).toBeNull()
+  })
+})
+
 describe('hand-declared providers', () => {
-  function mountCard(overrides: Partial<Parameters<typeof CustomProviderCard>[0]> = {}) {
-    const scripted = scriptedFace()
+  function mountCard(
+    overrides: Partial<Parameters<typeof CustomProviderCard>[0]> = {},
+    wire: Parameters<typeof scriptedFace>[0] = {},
+  ) {
+    const scripted = scriptedFace(wire)
     const onClose = vi.fn()
     render(
       <CustomProviderCard
@@ -652,6 +705,140 @@ describe('hand-declared providers', () => {
     expect(set).toHaveBeenCalledWith({ ref: 'ACME_GATEWAY_API_KEY', value: 'gw-key' })
   })
 
+  it('scopes each card to fields a provider can actually own', async () => {
+    // Reasoning effort used to sit here. It is a per-MODEL capability and the
+    // models under one provider disagree about it, so a provider-scoped
+    // control could only be set to a value some of them reject — which took
+    // the whole provider out of the picker. The composer's model picker owns
+    // the choice, and a switch there records provider+model+effort together.
+    const fields = () => [...document.querySelectorAll('input,select')]
+      .map(el => el.getAttribute('aria-label')).filter(Boolean)
+
+    mountCard()
+    fireEvent.change(screen.getByLabelText(en.customRoute), { target: { value: 'acme' } })
+    expect(fields()).toEqual([en.customRoute, en.customDisplayName, en.baseUrl, en.customApi, en.keyInput])
+    cleanup()
+
+    await mountSection({ providers: { openai: { apiKeyEnv: 'OPENAI_API_KEY' } } })
+    openEditor('openai')
+    fireEvent.click(screen.getByText(en.customized))
+    expect(fields()).toEqual([en.keyInput, en.baseUrl])
+  })
+
+  it('retries only the key after the profile landed, and reports the provider on cancel', async () => {
+    const set = vi.fn()
+      .mockResolvedValueOnce(fail('credential store is read-only', 'credential-rejected'))
+      .mockResolvedValueOnce(ok({}))
+    const { mutate, onClose } = mountCard({}, { set })
+
+    fireEvent.change(screen.getByLabelText(en.customRoute), { target: { value: 'acme' } })
+    fireEvent.change(screen.getByLabelText(en.baseUrl), { target: { value: 'https://acme.test/v1' } })
+    fireEvent.change(screen.getByLabelText(en.keyInput), { target: { value: '  gw-key  ' } })
+    fireEvent.click(screen.getByRole('button', { name: en.addModel }))
+    fireEvent.change(screen.getByLabelText(`${en.modelId} 1`), { target: { value: 'm' } })
+    fireEvent.click(screen.getByText(en.create))
+
+    // The profile landed; only the key failed. The card says so and stays open.
+    await waitFor(() => { expect(screen.getByText('credential store is read-only')).toBeTruthy() })
+    expect(onClose).not.toHaveBeenCalled()
+    expect(mutate).toHaveBeenCalledTimes(1)
+    // The key is stored trimmed, matching the editor.
+    expect(set).toHaveBeenNthCalledWith(1, { ref: 'ACME_API_KEY', value: 'gw-key' })
+
+    // The provider exists now, so the fields describing it are settled and
+    // only the key can still be corrected.
+    expect(screen.getByLabelText<HTMLInputElement>(en.customRoute).disabled).toBe(true)
+    expect(screen.getByLabelText<HTMLInputElement>(en.baseUrl).disabled).toBe(true)
+    expect(screen.getByLabelText<HTMLInputElement>(en.keyInput).disabled).toBe(false)
+
+    fireEvent.change(screen.getByLabelText(en.keyInput), { target: { value: 'gw-key-2' } })
+    fireEvent.click(screen.getByText(en.create))
+    await waitFor(() => { expect(onClose).toHaveBeenCalledWith(true) })
+    // Re-running the profile write would carry the revision this card's own
+    // first write superseded, so the Host would answer settings-conflict and
+    // the key could never be stored from here at all.
+    expect(mutate).toHaveBeenCalledTimes(1)
+    expect(set).toHaveBeenNthCalledWith(2, { ref: 'ACME_API_KEY', value: 'gw-key-2' })
+  })
+
+  it('reports the created provider when cancelled after its profile landed', async () => {
+    const set = vi.fn().mockResolvedValue(fail('nope', 'credential-rejected'))
+    const { onClose } = mountCard({}, { set })
+
+    fireEvent.change(screen.getByLabelText(en.customRoute), { target: { value: 'acme' } })
+    fireEvent.change(screen.getByLabelText(en.baseUrl), { target: { value: 'https://acme.test/v1' } })
+    fireEvent.change(screen.getByLabelText(en.keyInput), { target: { value: 'gw-key' } })
+    fireEvent.click(screen.getByRole('button', { name: en.addModel }))
+    fireEvent.change(screen.getByLabelText(`${en.modelId} 1`), { target: { value: 'm' } })
+    fireEvent.click(screen.getByText(en.create))
+    await waitFor(() => { expect(screen.getByText('nope')).toBeTruthy() })
+
+    // Walking away leaves a real provider behind; reporting no change would
+    // leave the page without the row it now has.
+    fireEvent.click(screen.getByText(en.cancel))
+    expect(onClose).toHaveBeenCalledWith(true)
+  })
+
+  it('never contradicts a filled-in field with the next gate\u2019s copy', () => {
+    mountCard()
+    const routeField = screen.getByLabelText(en.customRoute)
+    fireEvent.change(routeField, { target: { value: '2' } })
+    fireEvent.change(screen.getByLabelText(en.baseUrl), { target: { value: 'https://acme.test/v1' } })
+    fireEvent.click(screen.getByRole('button', { name: en.addModel }))
+    fireEvent.change(screen.getByLabelText(`${en.modelId} 1`), { target: { value: 'm' } })
+
+    // The route field explains itself right under the input; the shared line
+    // must stay silent rather than falling through to "no models yet" while
+    // the list above plainly has one.
+    expect(screen.getByText(en.customRouteInvalid)).toBeTruthy()
+    expect(screen.queryByText(en.customNeedsModels)).toBeNull()
+
+    // Fixing the route hands the line back to the gate that is actually unmet.
+    fireEvent.change(routeField, { target: { value: 'acme' } })
+    expect(screen.queryByText(en.customNeedsModels)).toBeNull()
+    expect(buttonNamed(en.create).disabled).toBe(false)
+  })
+
+  it('refuses a route id whose derived credential reference would be illegal', () => {
+    mountCard()
+    const routeField = screen.getByLabelText(en.customRoute)
+    fireEvent.change(routeField, { target: { value: 'https://acme.test/v1' } })
+
+    // A digit-leading id used to pass every check this card makes and then
+    // fail at the credential seam with a raw regular expression: the
+    // reference derives as `123_API_KEY`, and a credential reference is a
+    // POSIX shell identifier, which cannot start with a digit.
+    fireEvent.change(routeField, { target: { value: '123' } })
+    expect(screen.getByText(en.customRouteInvalid)).toBeTruthy()
+    expect(buttonNamed(en.create).disabled).toBe(true)
+
+    fireEvent.change(routeField, { target: { value: 'a1' } })
+    expect(screen.queryByText(en.customRouteInvalid)).toBeNull()
+  })
+
+  it('styles a rejected route id as a fault and its guidance as a hint', () => {
+    mountCard()
+    const routeField = screen.getByLabelText(en.customRoute)
+    // Same split the key field makes: what the user got wrong reads as a
+    // fault, what they have yet to do reads as guidance.
+    expect(screen.getByText(en.customRouteHint).className).toMatch(/advancedHint/)
+
+    fireEvent.change(routeField, { target: { value: '2' } })
+    expect(screen.getByText(en.customRouteInvalid).className).toMatch(/error/)
+
+    fireEvent.change(routeField, { target: { value: 'openai' } })
+    expect(screen.getByText(en.customRouteTaken).className).toMatch(/error/)
+  })
+
+  it('derives a reference the credential seam accepts for every id it admits', () => {
+    // The two rules have to stay in step; this is the relation, checked
+    // directly rather than through the DOM.
+    const CREDENTIAL_REF = /^[A-Za-z_][A-Za-z0-9_]*$/
+    for (const id of ['a', 'ds', 'a1', 'acme-gateway', 'x-1-y', 'zz9']) {
+      expect(CREDENTIAL_REF.test(deriveKeyRef(id))).toBe(true)
+    }
+  })
+
   it('names the blocked gate under the form, and nothing once it is satisfied', () => {
     mountCard()
     fireEvent.change(screen.getByLabelText(en.customRoute), { target: { value: 'acme' } })
@@ -815,8 +1002,10 @@ describe('hand-declared providers', () => {
 
     await waitFor(() => { expect(onClose).toHaveBeenCalledWith(true) })
     // No display name configured means none stored; the route id is the name.
+    // No key typed means no reference either, matching the editor: the route
+    // keeps its provider-native auth path instead of resolving a reference
+    // nothing ever sets. The with-key case is covered above.
     expect(firstMutate(mutate).ops[0]?.value).toEqual({
-      apiKeyEnv: 'ACME_API_KEY',
       api: 'anthropic-messages',
       baseURL: 'https://acme.test/v1',
       models: [{ id: 'm' }],

packages/client/ui-primitives/src/icons/index.tsx

@@ -750,6 +750,27 @@ export const IconSparkle16 = ({ size = 16, className }: IconProps) => (
   </svg>
 )
 
+/** inspect_outline_12 (shared tool-row trajectory affordance glyph) */
+export const IconInspectOutline12 = ({ size = 12, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg" aria-hidden>
+    <path d="M16 8L10.8571 12V10.552L14.1383 8L10.8571 5.448V4L16 8ZM5.14286 10.552L1.86171 8L5.14286 5.448V4L0 8L5.14286 12V10.552ZM9.02514 4L5.59657 12H6.84057L10.2691 4H9.02514Z" fill="currentColor" />
+  </svg>
+)
+
+/** skill_outline_16 (skill tool-row glyph; document instructions + sparkle) */
+export const IconSkillOutline16 = ({ size = 16, className }: IconProps) => (
+  <svg width={size} height={size} className={className} viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+    <path
+      d="M12.5113 15.4067C12.4395 15.6249 12.1308 15.6249 12.059 15.4067L11.643 14.1416C11.454 13.567 11.0033 13.1164 10.4288 12.9274L9.16369 12.5113C8.94544 12.4395 8.94544 12.1308 9.16369 12.059L10.4288 11.643C11.0033 11.454 11.454 11.0033 11.643 10.4288L12.059 9.16369C12.1308 8.94544 12.4395 8.94544 12.5113 9.16369L12.9274 10.4288C13.1164 11.0033 13.567 11.454 14.1416 11.643L15.4067 12.059C15.6249 12.1308 15.6249 12.4395 15.4067 12.5113L14.1416 12.9274C13.567 13.1164 13.1164 13.567 12.9274 14.1416L12.5113 15.4067Z"
+      fill="currentColor"
+    />
+    <path
+      d="M9.02246 0.546878C9.9822 0.546878 10.7564 0.545403 11.374 0.612307C12.0042 0.680586 12.5515 0.826244 13.0273 1.17188C13.3052 1.37376 13.5501 1.61868 13.752 1.89649C14.0975 2.37225 14.2432 2.91984 14.3115 3.54981C14.3784 4.16727 14.377 4.94206 14.377 5.90137V8.51367C13.9611 8.29533 13.5071 8.13985 13.0273 8.06055V5.90137C13.0273 4.9121 13.0259 4.22322 12.9688 3.69532C12.9129 3.18044 12.8098 2.89782 12.6592 2.69043C12.5406 2.52724 12.3966 2.38326 12.2334 2.26465C12.026 2.11404 11.7437 2.0109 11.2285 1.95508C10.7005 1.89789 10.0122 1.89649 9.02246 1.89649H6.55371C5.56395 1.89649 4.87569 1.89787 4.34766 1.95508C3.83242 2.01092 3.55022 2.11398 3.34278 2.26465C3.17953 2.38329 3.03564 2.52719 2.91699 2.69043C2.76642 2.89782 2.66325 3.18042 2.60742 3.69532C2.55027 4.22322 2.54883 4.9121 2.54883 5.90137V10.0986C2.54883 11.0878 2.55031 11.7768 2.60742 12.3047C2.66326 12.8196 2.76642 13.1032 2.91699 13.3105C3.03558 13.4736 3.17966 13.6178 3.34278 13.7363C3.5502 13.8869 3.83265 13.9901 4.34766 14.0459C4.87568 14.1031 5.56398 14.1035 6.55371 14.1035H8.08399C8.27443 14.6025 8.55077 15.0585 8.89551 15.4541H6.55371C5.59402 15.4541 4.81976 15.4546 4.20215 15.3877C3.57204 15.3194 3.02468 15.1738 2.54883 14.8281C2.27111 14.6263 2.02606 14.3813 1.82422 14.1035C1.47883 13.6278 1.33293 13.08 1.26465 12.4502C1.19783 11.8327 1.19922 11.0579 1.19922 10.0986V5.90137C1.19922 4.94206 1.1978 4.16727 1.26465 3.54981C1.33295 2.91984 1.47867 2.37225 1.82422 1.89649C2.02613 1.61864 2.27098 1.37379 2.54883 1.17188C3.02472 0.826181 3.57197 0.6806 4.20215 0.612307C4.81976 0.545393 5.594 0.546877 6.55371 0.546878H9.02246ZM9.19629 9.14649H4.5459V7.84571H9.19629V9.14649ZM11.0303 6.10645H4.5459V4.80567H11.0303V6.10645Z"
+      fill="currentColor"
+    />
+  </svg>
+)
+
 /** ic_ds_question_outline_14 (figma extract): ring + question glyph. */
 export const IconQuestionOutline14 = ({ size = 14, className }: IconProps) => (
   <svg width={size} height={size} className={className} viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">

packages/client/ui-primitives/tests/icons.spec.tsx

@@ -16,8 +16,8 @@ const icons = Object.fromEntries(
 const iconNames = Object.keys(icons)
 
 describe('ic_ds_ icon set', () => {
-  it('exports the full P-I set (46 deepsuite + 17 figma extracts + the hand-authored sparkle)', () => {
-    expect(iconNames.length).toBe(64)
+  it('exports the full P-I set (46 deepsuite + 17 figma extracts + three product glyphs outside those sets)', () => {
+    expect(iconNames.length).toBe(66)
   })
 
   it.each(iconNames)('%s renders an svg with currentColor fills and no hardcoded palette', (name) => {