Merge branch 'master' into fix/agent-preset-ui-flow

2026-08-11 10:54:13 +08:00
parent 9e5135e338 db1028a84d
commit 45befb87e2
1947 changed files with 24165 additions and 14839 deletions
--- a/packages/client/AGENTS.md
+++ b/packages/client/AGENTS.md
@@ -91,9 +91,9 @@ If `test:gui` is red on code you did not touch, neither silently fix nor ignore

 Bringing up a new `packages/client/<name>` plugin package (ui-workspace is a complete example; ui-sidebar/ui-question are minimal skeletons):

-1. **Package skeleton**: `package.json` (`@deepseek-ai/dsh-client-<name>`, exports `.`/`./invariant`/`./client`/`./src/*`/`./package.json`, `dshClient` manifest, `files` list), `tsconfig.json` (extends `tsconfig.base.client.json`, one `references` entry per workspace dependency plus `support/invariants`), `tsdown.config.ts` (`clientBundle(id, ['lib/types/index.js', 'lib/types/invariant.js'])`), `src/index.ts` (empty node-half apply), `src/invariant.ts` (companion with a real reason), `src/css-modules.d.ts` when using CSS Modules, `README.md` with the Model Experience section.
-2. **Three registration surfaces, all required** (missing any one fails at a different, later point): the `tsconfig.client.json` aggregate `references` entry; a `dshClient` row in `packages/bundle/web-app/cordis.patch.yml`; a `packages/bundle/web-app/package.json` dependency (profile boots resolve bare row names through the healed `$DSH_HOME/profiles/node_modules` fallback, which mirrors the app's and each bundle's declared dependencies — a row whose package no manifest declares fails to import). `pnpm-workspace.yaml` already globs `packages/*/*`.
-3. **dshClient manifest semantics**: `platform: 'web'` always; `immediately: true` only for stage-one-prefetch infrastructure rows. `inject` lists package-name dependency edges — they are **informational only** (preflight display, HMR diffing); they do not sequence entry activation or apply order. Activation order is cordis fiber inject waiting on *services*, nothing else.
+1. **Package skeleton**: `package.json` (`@deepseek-ai/dsh-client-<name>`, exports `.`/`./invariant`/`./client`/`./src/*`/`./package.json`, `dsh.client` manifest, `files` list), `tsconfig.json` (extends `tsconfig.base.client.json`, one `references` entry per workspace dependency plus `support/invariants`), `tsdown.config.ts` (`clientBundle(id, ['lib/types/index.js', 'lib/types/invariant.js'])`), `src/index.ts` (empty node-half apply), `src/invariant.ts` (companion with a real reason), `src/css-modules.d.ts` when using CSS Modules, `README.md` with the Model Experience section.
+2. **Three registration surfaces, all required** (missing any one fails at a different, later point): the `tsconfig.client.json` aggregate `references` entry; a `dsh.client` row in `packages/bundle/web-app/cordis.patch.yml`; a `packages/bundle/web-app/package.json` dependency (profile boots resolve bare row names through the healed `$DSH_HOME/profiles/node_modules` fallback, which mirrors the app's and each bundle's declared dependencies — a row whose package no manifest declares fails to import). `pnpm-workspace.yaml` already globs `packages/*/*`.
+3. **dsh.client manifest semantics**: `platform: 'web'` always; `immediately: true` only for stage-one-prefetch infrastructure rows. `inject` lists package-name dependency edges — they are **informational only** (preflight display, HMR diffing); they do not sequence entry activation or apply order. Activation order is cordis fiber inject waiting on *services*, nothing else.
 4. **Registering into another package's slot**: apply order is unconstrained, and a business service is not a declaration barrier. Use `ctx.slots.inject(name, () => ctx.slots.register(...))`; it waits on the actual declaration, removes the contribution when that declaration collapses, reruns after redeclaration, and leaves with the caller's plugin fiber. Return a generator yielding each registration when several contributions must install and roll back atomically. A bare `slots.register` into an undeclared slot remains an error; keep service edges only for services the contribution actually reads.
 5. Rebuild the bundle (`pnpm --filter <pkg> bundle`) before probing a live `dsh web` server — the registry serves `lib/client.js`, not sources.

--- a/packages/client/connection/package.json
+++ b/packages/client/connection/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-connection",
  "description": "Wire consumer layer: HTTP-up/WebSocket-down client, ConnectionController dual streams with reconnect, and fixture api",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/connection"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,10 +29,12 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [],
-    "platform": "web",
-    "immediately": true
+  "dsh": {
+    "client": {
+      "inject": [],
+      "platform": "web",
+      "immediately": true
+    }
  },
  "license": "BSD-3-Clause",
  "dependencies": {
@@ -35,7 +44,7 @@
    "@deepseek-ai/dsh-llm": "workspace:^",
    "@deepseek-ai/dsh-session": "workspace:^",
    "@deepseek-ai/dsh-tools": "workspace:^",
-    "schemastery": "^3.18.0",
+    "@deepseek-ai/schemastery": "workspace:^",
    "ws": "^8.21.0"
  },
  "files": [
@@ -45,14 +54,14 @@
    "lib/types/**/*.d.ts"
  ],
  "peerDependencies": {
-    "@deepseek-ai/dsh-host-webserver": "^0.0.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/dsh-host-webserver": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "devDependencies": {
    "@deepseek-ai/dsh-host-webserver": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@types/ws": "^8.18.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "workspace:^"
  }
 }
--- a/packages/client/connection/src/client/index.ts
+++ b/packages/client/connection/src/client/index.ts
@@ -3,7 +3,7 @@
 * the shared API client, and lets the runtime object layer start the stream
 * controller with its sinks.
 */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { IApiClient } from './api.ts'
 import { ConnectionController, type ConnectionConfig, type ConnectionSinks, type ConnectionState } from './connection.ts'
 import { FixtureApiClient } from './fixture.ts'
--- a/packages/client/connection/src/index.ts
+++ b/packages/client/connection/src/index.ts
@@ -1,6 +1,6 @@
 /** Host HTTP bridge for browser-client RPC. */
-import type { Context } from 'cordis'
-import z from 'schemastery'
+import type { Context } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 import type {} from '@deepseek-ai/dsh-attachment'
 // Activates the httpServer Context merge used below.
 import type { WebRoute, WebUpgradeRoute } from '@deepseek-ai/dsh-host-webserver'
--- a/packages/client/connection/src/invariant.ts
+++ b/packages/client/connection/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-connection'
--- a/packages/client/connection/src/rpc-host.ts
+++ b/packages/client/connection/src/rpc-host.ts
@@ -1,6 +1,6 @@
 /** Host registry and HTTP adapter for generic Connection RPC channels. */

-import { Context, Service } from 'cordis'
+import { Context, Service } from '@deepseek-ai/cordis'
 import type { WebRoute } from '@deepseek-ai/dsh-host-webserver'
 import {
  clientRequestSchema,
@@ -32,7 +32,7 @@ interface ConnectionRpcInterceptor {
  readonly options: ConnectionRpcHandlerOptions
 }

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Context {
    /** Host Connection transport and RPC registrations. */
    connection: HostConnectionHandle
--- a/packages/client/connection/tests/client-apply.spec.ts
+++ b/packages/client/connection/tests/client-apply.spec.ts
@@ -2,7 +2,7 @@
 * Connection plugin browser-half apply: ctx.connection handle mounting, mode
 * selection off the page URL, and the single-consumer stream-loop ownership.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import { apply, type ConnectionHandle } from '../src/client/index.ts'
 import type { RpcMessage } from '../src/client/api.ts'
--- a/packages/client/connection/tests/node-half.spec.ts
+++ b/packages/client/connection/tests/node-half.spec.ts
@@ -2,7 +2,7 @@
 import { EventEmitter, once } from 'node:events'
 import { createServer, request as httpRequest } from 'node:http'
 import { PassThrough, Readable } from 'node:stream'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import type { AddressInfo } from 'node:net'
 import type { IncomingMessage, ServerResponse } from 'node:http'
--- a/packages/client/hmr/package.json
+++ b/packages/client/hmr/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-hmr",
  "description": "Dev-only hot-reload driver for script-loaded client entries: SSE rebuilt frames → invalidate/prefetch → fiber swap through the vendored Loader entry",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/hmr"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,28 +29,30 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [],
-    "platform": "web",
-    "immediately": true
+  "dsh": {
+    "client": {
+      "inject": [],
+      "platform": "web",
+      "immediately": true
+    }
  },
  "license": "BSD-3-Clause",
  "dependencies": {
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/schemastery": "workspace:^"
  },
  "peerDependencies": {
-    "@cordisjs/plugin-loader": "^1.0.0-rc.5",
-    "@deepseek-ai/dsh-client-modules": "^0.0.1",
-    "@deepseek-ai/dsh-host-webserver": "^0.0.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
-  },
-  "devDependencies": {
-    "@cordisjs/plugin-loader": "workspace:^",
+    "@deepseek-ai/cordis-plugin-loader": "workspace:^",
    "@deepseek-ai/dsh-client-modules": "workspace:^",
    "@deepseek-ai/dsh-host-webserver": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "workspace:^"
+  },
+  "devDependencies": {
+    "@deepseek-ai/cordis-plugin-loader": "workspace:^",
+    "@deepseek-ai/dsh-client-modules": "workspace:^",
+    "@deepseek-ai/dsh-host-webserver": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "files": [
    "lib/index.js",
--- a/packages/client/hmr/src/client/index.ts
+++ b/packages/client/hmr/src/client/index.ts
@@ -61,8 +61,8 @@
 * fiberless (the next rebuilt frame retries from scratch); an apply failure
 * leaves a FAILED fiber for the shell's status projection. Both log loudly.
 */
-import type { Context } from 'cordis'
-import type { Entry, Loader } from '@cordisjs/plugin-loader'
+import type { Context } from '@deepseek-ai/cordis'
+import type { Entry, Loader } from '@deepseek-ai/cordis-plugin-loader'
 import type { PluginsEventFrame } from '../events.ts'
 import { EVENTS_ENDPOINT } from '../events.ts'

--- a/packages/client/hmr/src/index.ts
+++ b/packages/client/hmr/src/index.ts
@@ -8,8 +8,8 @@
 */
 import { statSync } from 'node:fs'
 import type { ServerResponse } from 'node:http'
-import type { Context } from 'cordis'
-import z from 'schemastery'
+import type { Context } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 // Empty type imports carry the clientModuleHost/httpServer Context merges.
 import type {} from '@deepseek-ai/dsh-client-modules'
 import type {} from '@deepseek-ai/dsh-host-webserver'
--- a/packages/client/hmr/src/invariant.ts
+++ b/packages/client/hmr/src/invariant.ts
@@ -3,7 +3,7 @@
 * @module @deepseek-ai/dsh-client-hmr/invariant
 */

-import type { Context, Fiber } from 'cordis'
+import type { Context, Fiber } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-hmr'
--- a/packages/client/hmr/tests/node-half.spec.ts
+++ b/packages/client/hmr/tests/node-half.spec.ts
@@ -5,7 +5,7 @@
 import { mkdtempSync, rmSync, statSync, unlinkSync, utimesSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import type { WebBootGraph, ClientModuleHostService } from '@deepseek-ai/dsh-client-modules'
 import type { WebRoute, HttpServerService } from '@deepseek-ai/dsh-host-webserver'
--- a/packages/client/locale/package.json
+++ b/packages/client/locale/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-locale",
  "description": "Locale plugin: Host-backed zh/en preference, browser-derived fallback, locale snapshots, and typed namespace dictionaries",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/locale"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,22 +29,24 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [
-      "@deepseek-ai/dsh-client-connection",
-      "@deepseek-ai/dsh-client-runtime"
-    ],
-    "platform": "web",
-    "immediately": true
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-connection",
+        "@deepseek-ai/dsh-client-runtime"
+      ],
+      "platform": "web",
+      "immediately": true
+    }
  },
  "license": "BSD-3-Clause",
  "peerDependencies": {
-    "@deepseek-ai/dsh-client-connection": "^0.0.1",
-    "@deepseek-ai/dsh-client-runtime": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-primitives": "^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",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "devDependencies": {
@@ -46,12 +55,12 @@
    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "dependencies": {
    "@deepseek-ai/dsh-settings": "workspace:^",
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/schemastery": "workspace:^"
  },
  "files": [
    "lib/index.js",
--- a/packages/client/locale/src/client/index.ts
+++ b/packages/client/locale/src/client/index.ts
@@ -9,7 +9,7 @@
 * ui-slots): in THIS unit the map holds only this package's own merges, but
 * consumers merge more namespaces in and the intersection keeps them
 * string-typed. The rule fires on the narrow-map view, not real redundancy. */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import {
  type BoundActions, type LocaleDictOf, type LocaleNamespaceMap, type Translate, type TranslateNS,
 } from '@deepseek-ai/dsh-client-ui-slots'
@@ -68,7 +68,7 @@ export interface LocaleSnapshot {
  revision: number
 }

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Context {
    locale: LocaleService
  }
--- a/packages/client/locale/src/index.ts
+++ b/packages/client/locale/src/index.ts
@@ -1,6 +1,6 @@
 /** Host registration for the browser locale preference. */

-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { settingsNamespace } from '@deepseek-ai/dsh-settings'
 import { LOCALE_SETTINGS_NAMESPACE, LocaleSettingsSchema } from './locale-settings.ts'

--- a/packages/client/locale/src/invariant.ts
+++ b/packages/client/locale/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-locale'
--- a/packages/client/locale/src/locale-settings.ts
+++ b/packages/client/locale/src/locale-settings.ts
@@ -1,6 +1,6 @@
 /** Locale preference stored in the Host user-settings document. */

-import z from 'schemastery'
+import z from '@deepseek-ai/schemastery'

 /** Settings namespace owned by the locale plugin. */
 export const LOCALE_SETTINGS_NAMESPACE = 'locale'
--- a/packages/client/locale/tests/apply.spec.ts
+++ b/packages/client/locale/tests/apply.spec.ts
@@ -1,7 +1,7 @@
 /** locale apply wiring: service + dictionaries provision, declaration-aware
 * Language row registration, snapshot projection into the row store, and
 * recovery after an HMR collapse of the declaring entry. */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import {
--- a/packages/client/locale/tests/host.spec.ts
+++ b/packages/client/locale/tests/host.spec.ts
@@ -1,4 +1,4 @@
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import { Settings, settingsNamespace, type SettingsNamespace } from '@deepseek-ai/dsh-settings'
 import {
--- a/packages/client/locale/tests/invariant.spec.ts
+++ b/packages/client/locale/tests/invariant.spec.ts
@@ -1,6 +1,6 @@
 // @vitest-environment jsdom
 import { describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { apply as nodeApply } from '@deepseek-ai/dsh-client-locale'
 import { apply as clientApply, COMMON_NS, LocaleService, inject } from '@deepseek-ai/dsh-client-locale/client'
 import * as LocaleInvariant from '@deepseek-ai/dsh-client-locale/invariant'
--- a/packages/client/locale/tests/locale.spec.ts
+++ b/packages/client/locale/tests/locale.spec.ts
@@ -1,6 +1,6 @@
 // @vitest-environment jsdom
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { stubSettingsScope, type StubSettingsScope } from '@deepseek-ai/dsh-client-test-runtime'
 import type { LocaleSettings, LocaleSnapshot } from '@deepseek-ai/dsh-client-locale/client'
 import { LocaleService } from '@deepseek-ai/dsh-client-locale/client'
--- a/packages/client/modules/README.i18n.yaml
+++ b/packages/client/modules/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/modules/README.md
-README.md: 7b4c9b72e782dbdbb69d711ae7e022771afebace
-README.zh.md: 6420f6324f38979af5428a9ad428f33525009f1f
+README.md: a1d578850c2518a85dc32f048768b78caf5ffec4
+README.zh.md: 772a4870f7ef6730d9d3d4db434ed771d97984f0
--- a/packages/client/modules/README.md
+++ b/packages/client/modules/README.md
@@ -8,7 +8,7 @@ Lazy CJS model (web2): executing a plugin bundle only REGISTERS its factory (`wi

 Resolution branch order (`import(specifier)`): platform seed word → shell instance; memoized record → surface; shell-own static registry (`registerStatic`, app-shell) → module; registered factory → materialize; graph row (`window.__DSH_BOOT__`) → load its external classic script + materialize; anything else throws — the runtime mirror of the build-time bundle purity gate. The synchronous `require` handed to factories walks the same order minus the asynchronous load branch and records observed edges into the module record. `prefetch` is the stage-one arrival hook (script load and factory registration only; concurrent calls share one in-flight task); `invalidate` drops the factory and materialized record so the next prefetch/import reloads the script (the HMR hook).

-The Node half scans enabled Loader entries for web `dshClient` packages, resolves each `exports["./client"]`, hashes the built bundle into the boot graph, and serves it with its source map under `/plugins`. Source launch maps host imports to TypeScript source but still consumes this built client export; missing files share one build instruction followed by a package/path list, while unrelated filesystem errors remain separate failures.
+The Node half scans enabled Loader entries for web `dsh.client` packages, resolves each `exports["./client"]`, hashes the built bundle into the boot graph, and serves it with its source map under `/plugins`. Source launch maps host imports to TypeScript source but still consumes this built client export; missing files share one build instruction followed by a package/path list, while unrelated filesystem errors remain separate failures.

 ## Model Experience

--- a/packages/client/modules/README.zh.md
+++ b/packages/client/modules/README.zh.md
@@ -8,7 +8,7 @@

 解析分支顺序（`import(specifier)`）：平台种子词 → 外壳实例；记忆化记录 → 表层；外壳自身的静态注册表（`registerStatic`，app-shell）→ 模块；已注册 factory → 物化；模块图记录（`window.__DSH_BOOT__`）→ 加载外部 classic script + 物化；其他情况一律抛出异常。这是构建时组合包纯度门禁的运行时镜像。交给 factory 的同步 `require` 采用相同顺序，但不含异步加载分支，并把观察到的边记录到模块记录中。`prefetch` 是第一阶段到达钩子（只加载脚本并注册 factory；并发调用共享一个进行中的任务）；`invalidate` 会丢弃 factory 与物化记录，使下一次 prefetch/import 重新加载脚本；它是 HMR（热模块替换）钩子。

-Node 侧会扫描已启用的 Loader 配置项以发现 web `dshClient` 包，解析每个 `exports["./client"]`，把构建后的组合包哈希写入启动图，并通过 `/plugins` 提供该文件及其 sourcemap。源码启动会把宿主侧导入映射到 TypeScript 源码，但仍消费这一构建后的客户端导出；缺失文件共享一条构建说明，随后以 package/path list 列出各项，而无关的文件系统错误仍是独立故障。
+Node 侧会扫描已启用的 Loader 配置项以发现 web `dsh.client` 包，解析每个 `exports["./client"]`，把构建后的组合包哈希写入启动图，并通过 `/plugins` 提供该文件及其 sourcemap。源码启动会把宿主侧导入映射到 TypeScript 源码，但仍消费这一构建后的客户端导出；缺失文件共享一条构建说明，随后以 package/path list 列出各项，而无关的文件系统错误仍是独立故障。

 ## 模型体验

--- a/packages/client/modules/package.json
+++ b/packages/client/modules/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-modules",
-  "description": "Client module system, dual-face: node half composes the __DSH_BOOT__ entry graph (incremental dshClient scan, bundle route, index tap, webPlugins service); browser half is the lazy-CJS module table the vendored cordis Loader consumes as its internal seam",
-  "version": "0.0.1",
-  "private": true,
+  "description": "Client module system, dual-face: node half composes the __DSH_BOOT__ entry graph (incremental dsh.client scan, bundle route, index tap, webPlugins service); browser half is the lazy-CJS module table the vendored cordis Loader consumes as its internal seam",
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/modules"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,10 +29,12 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "platform": "web",
-    "inject": [],
-    "immediately": true
+  "dsh": {
+    "client": {
+      "platform": "web",
+      "inject": [],
+      "immediately": true
+    }
  },
  "scripts": {
    "bundle": "tsdown",
@@ -33,10 +42,10 @@
  },
  "license": "BSD-3-Clause",
  "devDependencies": {
-    "@cordisjs/plugin-loader": "workspace:^",
+    "@deepseek-ai/cordis-plugin-loader": "workspace:^",
    "@deepseek-ai/dsh-host-webserver": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "files": [
    "lib/index.js",
@@ -45,7 +54,7 @@
    "lib/types/**/*.d.ts"
  ],
  "peerDependencies": {
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^"
  }
 }
--- a/packages/client/modules/src/client/index.ts
+++ b/packages/client/modules/src/client/index.ts
@@ -9,7 +9,7 @@
 * a no-op against the already-registered entry.
 * @module @deepseek-ai/dsh-client-modules/client
 */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { DshWindow } from './manifest.ts'

 export { ClientModuleSystem } from './system.ts'
--- a/packages/client/modules/src/client/manifest.ts
+++ b/packages/client/modules/src/client/manifest.ts
@@ -30,10 +30,10 @@
 * composes the wire.
 */

-import type {} from 'cordis'
+import type {} from '@deepseek-ai/cordis'
 import type { ClientModuleSystem } from './system.ts'

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Context {
    /** The client module system the web shell builds at boot (provided by the `./client` wrapper plugin). */
    modules: ClientModuleLoader
@@ -44,7 +44,7 @@ declare module 'cordis' {
 * One composed client entry pushed by the host (a graph row). Wire
 * single source: the host node half (package root) produces this same shape.
 * `immediately` marks stage-one prefetch; `inject` is informational graph
- * metadata (the authoritative edges live in each package's dshClient
+ * metadata (the authoritative edges live in each package's `dsh.client`
 * declaration and reach fibers through entry creation).
 */
 export interface WebBootEntry {
--- a/packages/client/modules/src/index.ts
+++ b/packages/client/modules/src/index.ts
@@ -1,6 +1,6 @@
 /**
- * Node half of the client module system (dshClient dual-face package): scans
- * the host Loader's entries for `dshClient` packages, composes the
+ * Node half of the client module system (`dsh.client` dual-face package): scans
+ * the host Loader's entries for packages declaring `dsh.client`, composes the
 * `window.__DSH_BOOT__` entry graph (wire single source: {@link WebBootEntry}
 * in `./client/manifest.ts`), serves `/plugins/<id>/client.js` and its source
 * map, taps the index render to inject the boot manifest, and provides the
@@ -26,9 +26,9 @@ import { readFile } from 'node:fs/promises'
 import type { IncomingMessage, ServerResponse } from 'node:http'
 import { createRequire } from 'node:module'
 import { dirname, join } from 'node:path'
-import { Service } from 'cordis'
-import type { Context } from 'cordis'
-import type {} from '@cordisjs/plugin-loader'
+import { Service } from '@deepseek-ai/cordis'
+import type { Context } from '@deepseek-ai/cordis'
+import type {} from '@deepseek-ai/cordis-plugin-loader'
 import type {} from '@deepseek-ai/dsh-host-webserver'
 import type { WebBootEntry, WebBootGraph } from './client/manifest.ts'

@@ -36,14 +36,14 @@ export type {
  BootManifest, BootModuleRow, BootPluginRow, WebBootEntry, WebBootGraph,
 } from './client/manifest.ts'

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Context {
    /** The web plugin table (provided by the client-modules node half). */
    clientModuleHost: ClientModuleHostService
  }
 }

-/** package.json `dshClient` declaration fields, validated one by one after reading the file. */
+/** package.json `dsh.client` declaration fields, validated one by one after reading the file. */
 interface DshClientDeclaration {
  inject?: string[]
  platform: string
@@ -51,7 +51,7 @@ interface DshClientDeclaration {
  immediately?: boolean
 }

-/** Resolved package metadata for one dshClient package (cached per name, never expires). */
+/** Resolved package metadata for one `dsh.client` package (cached per name, never expires). */
 interface PkgMeta {
  clientPath: string
  inject?: string[]
@@ -105,21 +105,21 @@ interface WebPluginRecord {
  clientPath: string
 }

-/** Narrow an unknown parsed JSON value to the dshClient declaration, throwing on malformed fields. */
+/** Narrow an unknown parsed JSON value to the `dsh.client` declaration, throwing on malformed fields. */
 function parseDshClient(pkgName: string, value: unknown): DshClientDeclaration | undefined {
  if (value === undefined) return undefined
  if (typeof value !== 'object' || value === null) {
-    throw new Error(`client-modules: ${pkgName} has a non-object dshClient declaration`)
+    throw new Error(`client-modules: ${pkgName} has a non-object dsh.client declaration`)
  }
  const decl = value as Record<string, unknown>
  if (typeof decl.platform !== 'string') {
-    throw new Error(`client-modules: ${pkgName} dshClient.platform must be a string`)
+    throw new Error(`client-modules: ${pkgName} dsh.client.platform must be a string`)
  }
  if (decl.inject !== undefined && (!Array.isArray(decl.inject) || decl.inject.some(i => typeof i !== 'string'))) {
-    throw new Error(`client-modules: ${pkgName} dshClient.inject must be a string array`)
+    throw new Error(`client-modules: ${pkgName} dsh.client.inject must be a string array`)
  }
  if (decl.immediately !== undefined && typeof decl.immediately !== 'boolean') {
-    throw new Error(`client-modules: ${pkgName} dshClient.immediately must be a boolean`)
+    throw new Error(`client-modules: ${pkgName} dsh.client.immediately must be a boolean`)
  }
  return {
    platform: decl.platform,
@@ -175,7 +175,7 @@ export function injectBootManifest(html: string, graph: WebBootGraph): string {
 }

 /**
- * The web plugin table service: incremental dshClient scan + wire composition
+ * The web plugin table service: incremental `dsh.client` scan + wire composition
 * + bundle route + index tap. Construction runs the activation scan
 * synchronously — a malformed declaration or missing bundle among the
 * already-loaded entries aggregates into one loud throw (FAILED fiber; the
@@ -186,7 +186,7 @@ export class ClientModuleHostService extends Service {

  private readonly table = new Map<string, WebPluginRecord>()
  // Negative verdicts (unresolvable specifier — builtins like cordis:include,
-  // subpath rows — or a package without a web dshClient declaration) are
+  // subpath rows — or a package without a web `dsh.client` declaration) are
  // cached as null and never expire: plugin-set changes take effect on restart.
  private readonly pkgMeta = new Map<string, PkgMeta | null>()
  private readonly rebuildListeners = new Set<(id: string, rev: string) => void>()
@@ -342,14 +342,18 @@ export class ClientModuleHostService extends Service {
      return null
    }
    const pkg = JSON.parse(readFileSync(pkgPath, 'utf8')) as Record<string, unknown>
-    const decl = parseDshClient(pkgName, pkg.dshClient)
+    const dsh = pkg.dsh
+    const decl = parseDshClient(
+      pkgName,
+      dsh !== null && typeof dsh === 'object' ? (dsh as Record<string, unknown>).client : undefined,
+    )
    if (decl === undefined || decl.platform !== 'web') {
      this.pkgMeta.set(pkgName, null)
      return null
    }
    const clientRel = clientExportOf(pkgName, pkg.exports)
    if (clientRel === undefined) {
-      throw new Error(`client-modules: ${pkgName} declares dshClient but exports no "./client" bundle`)
+      throw new Error(`client-modules: ${pkgName} declares dsh.client but exports no "./client" bundle`)
    }
    const meta: PkgMeta = {
      clientPath: join(dirname(pkgPath), clientRel),
--- a/packages/client/modules/src/invariant.ts
+++ b/packages/client/modules/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-modules'
--- a/packages/client/modules/tests/node-half.spec.ts
+++ b/packages/client/modules/tests/node-half.spec.ts
@@ -5,7 +5,7 @@ import type { IncomingMessage, ServerResponse } from 'node:http'
 import { tmpdir } from 'node:os'
 import { dirname, join } from 'node:path'
 import { pathToFileURL } from 'node:url'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, describe, expect, it } from 'vitest'
 import type { HttpServerService, WebRoute } from '@deepseek-ai/dsh-host-webserver'
 import { ClientModuleHostService } from '../src/index.ts'
@@ -17,8 +17,11 @@ afterEach(() => {
  root = undefined
 })

-/** Create a resolvable dshClient package whose client export points at the returned path. */
-function writePackage(packageName: string): string {
+/** Create a resolvable package whose client export points at the returned path. */
+function writePackage(
+  packageName: string,
+  metadata: Record<string, unknown> = { dsh: { client: { platform: 'web' } } },
+): string {
  root ??= realpathSync(mkdtempSync(join(tmpdir(), 'dsh-client-modules-')))
  const pkgRoot = join(root, 'node_modules', ...packageName.split('/'))
  const clientPath = join(pkgRoot, 'lib', 'client.js')
@@ -29,7 +32,7 @@ function writePackage(packageName: string): string {
      './client': './lib/client.js',
      './package.json': './package.json',
    },
-    dshClient: { platform: 'web' },
+    ...metadata,
  }))
  return clientPath
 }
@@ -66,6 +69,20 @@ function construct(packageNames: string[]): ClientModuleHostService {
 }

 describe('client bundle activation', () => {
+  it('allows sibling dsh roles', () => {
+    const currentName = '@fixture/current-client-field'
+    const clientPath = writePackage(currentName, {
+      dsh: {
+        bundle: { patch: './cordis.patch.yml' },
+        client: { platform: 'web' },
+        profile: { bundles: [] },
+      },
+    })
+    mkdirSync(dirname(clientPath), { recursive: true })
+    writeFileSync(clientPath, 'module.exports = {}\n')
+    expect(construct([currentName]).graph().entries.map(entry => entry.id)).toEqual([currentName])
+  })
+
  it('groups missing bundles under one source-build instruction with a package/path list', () => {
    const firstName = '@fixture/missing-first'
    const secondName = '@fixture/missing-second'
--- a/packages/client/runtime/README.i18n.yaml
+++ b/packages/client/runtime/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/runtime/README.md
-README.md: 1ec6cc38aed1bebff6b6ecb40faee7ae3ba9e412
-README.zh.md: 6602152790a1d433371e27b274a4eb8c9e3cfcd8
+README.md: d84cd793c34242759ad04edf0debb91558ec3dfc
+README.zh.md: e7a74c454f24fcec5e797427c21222b1dc258b44
--- a/packages/client/runtime/README.md
+++ b/packages/client/runtime/README.md
@@ -2,10 +2,9 @@

 English | [中文](README.zh.md)

-Client cordis boot and React-free object services: SlotsService wraps SlotCore and supplies renderer data sources; SessionsService owns Session objects and the Chat-facing list, scope, and event-window state; SessionHistoryService lazily owns independent raw-history ledgers for inspection consumers, loading the current tail first and prepending one older page only when its consumer requests it. Each history snapshot exposes the raw window's absolute base sequence so a consumer detects a prepend even when the page adds no surface-visible node. WorkspacesService depends on SessionsService and owns Workspace objects, list/actions, default-target derivation, and the New Session blank-reuse entry (`connectWorkspace`). The runtime fans the shared Host stream into the Session, Workspace, and activated history owners without routing inspection state through Session or SessionManager, and bridges the registry-invalidation frames to typed ctx events (`commands/changed`, `session/preset-changed`, `settings/changed`, `credentials/changed`, `models/changed`) so surface caches refetch without touching the stream. `host/session-preset-changed` also folds its preset into the session row, because the switch's RPC echo reaches only the client that issued it. Client sessions are always Host-born (Session+Agent+cwd in one `session.create`); the client holds no pre-entity session state — a session's Agent scope (the client mirror of host dsh-scope, keyed by the shared agent/session id) is born when its row enters the list mirror and dies with the prune. Each `Session` holds a generic `ProjectionValueStore` seeded from the history-tail `projections` block and updated by `session/projection` frames under higher-seq-wins; domain keys (including `todos`) are read via `projections.faceOf` / `useProjection`, not via `ConversationSnapshot`. The store also publishes one reference-stable whole-value map through `SessionSummary.projectionValues`, allowing global list consumers to reuse the same projections without creating per-session subscriptions.
+Client cordis boot and React-free object services: SlotsService wraps SlotCore and supplies renderer data sources; SessionsService owns Session objects, list and scope state, and the shared event window and history paging used by registered conversation view targets. WorkspacesService depends on SessionsService and owns Workspace objects, list/actions, default-target derivation, and the New Session blank-reuse entry (`connectWorkspace`). The runtime fans the shared Host stream into Session and Workspace owners and bridges the registry-invalidation frames to typed ctx events (`commands/changed`, `session/preset-changed`, `settings/changed`, `credentials/changed`, `models/changed`) so surface caches refetch without touching the stream. `host/session-preset-changed` also folds its preset into the session row, because the switch's RPC echo reaches only the client that issued it. Client sessions are always Host-born (Session+Agent+cwd in one `session.create`); the client holds no pre-entity session state — a session's Agent scope (the client mirror of host dsh-scope, keyed by the shared agent/session id) is born when its row enters the list mirror and dies with the prune. Contract: api-contracts v3 §4. Each `Session` holds a generic `ProjectionValueStore` seeded from the history-tail `projections` block and updated by `session/projection` frames under higher-seq-wins; domain keys (including `todos`) are read via `projections.faceOf` / `useProjection`, not via `ConversationSnapshot`. The store also publishes one reference-stable whole-value map through `SessionSummary.projectionValues`, allowing global list consumers to reuse the same projections without creating per-session subscriptions.

 `bindSettingsScope` is the browser mirror of the Host-side settings owner seam for one domain-owned namespace. It subscribes before starting a nonblocking initial read, publishes a uSES snapshot (status, section value, revision, writability, host/memory mode), serializes `set` writes with the latest known namespace revision, suppresses stale publications, recovers a rejected latest write from Host state, and reaches quiescence on plugin disposal. The default decoder validates each section against the namespace's own serialized wire schema (rehydrated through dsh-client-schema-form), so a domain adds a decoder only to narrow beyond that schema. Loopback pages use the Host settings API; remote pages stay in memory mode. Domain packages own the namespace schema, default, and live service rather than putting product policy in runtime.
-
 ## Slot declaration injection

 `ctx.slots.inject(name, callback)` makes a full `SlotMap` key the dependency for a contribution whose plugin can activate independently from the declaring entry. It runs `callback` synchronously when the declaration exists, otherwise waits; declaration collapse disposes the callback effect, and redeclaration reruns it. The controller belongs to the caller's plugin fiber, so unloading the contributor cancels either the wait or its active registrations. A direct `slots.register()` into an undeclared slot still throws.
@@ -42,17 +41,17 @@ Each `Session` gives its contiguous event window to a `ConversationNodeAssembler

 Definition authors keep matching local to the current event, give every correlated event a stable business id, and make updates replayable by log `seq`; renderers consume final Node data and constrained Location values rather than scanning Session or Chat collections. The [Conversation Node cookbook](../../../docs/cookbook/adding-a-conversation-node.md) gives the complete registration and pagination path.

-`ui-conversation` registers the built-in Chat Definitions and the keyed Chat snapshot builder. Append-origin user, assistant, and Tool results remain the human record; model-only replacement copies stay out, except that a compaction checkpoint becomes its own marker and resolves missing summary provenance when an older page supplies it. Durable inbox splice Contexts classify next-step user messages as steering without making inbox state a Session special case. Context messages retain producer provenance and form. StatsLine reads `ConversationSnapshot.chat.legacy.nodes`, while Session mirrors that legacy slice into the top-level `nodes`, `partial`, and `runningCalls` public compatibility fields without running a second business fold. Trajectory consumes neither compatibility surface; its activated `session-history` inspection keeps an independent fold until it gains its own registered target.
+`ui-conversation` registers the built-in Chat Definitions and the keyed Chat snapshot builder. Append-origin user, assistant, and Tool results remain the human record; model-only replacement copies stay out, except that a compaction checkpoint becomes its own marker and resolves missing summary provenance when an older page supplies it. Durable inbox splice Contexts classify next-step user messages as steering without making inbox state a Session special case. Context messages retain producer provenance and form. StatsLine reads `ConversationSnapshot.chat.legacy.nodes`, while Session mirrors that legacy slice into the top-level `nodes`, `partial`, and `runningCalls` public compatibility fields without running a second business fold. `ui-trajectory` registers independent Definitions and a target builder over the same Session window; it preserves the existing stage-oriented view model without consuming the Chat compatibility fields or running another history fold.

 The Chat builder keeps one mutable keyed store per Session. Content updates notify only the affected node key, structural changes rebuild order and Location membership, and a prepend adds rows without replacing existing keyed values. Assistant chunks update Definition State for every event but request at most one materialization per animation frame; final messages and Turn/Step closure publish immediately. See the [client Tool presentation decision](../../../.agents/notes/implemented/architecture/2026-08-08-client-tool-presentation-ownership.md).

-## Request inspection
+## Trajectory request data

-`SessionHistoryInspection.requests` is one chronological, purpose-discriminated provider-request stream. Assistant requests always carry their numeric `turn` and `step`; compaction requests carry `step: 0` and a `turn` owner that may be `null`. That null owner means a manual compaction ran standalone between turns, not that it belongs to either adjacent turn. A `session/end-seed` boundary closes an unmatched compaction request as an error at the boundary time with `Compaction was interrupted before completion.`; a later start projects as an independent request instead of overwriting the orphan.
+Trajectory Definitions assemble one chronological, purpose-discriminated provider-request stream. Assistant requests always carry their numeric `turn` and `step`; compaction requests carry `step: 0` and a `turn` owner that may be `null`. That null owner means a manual compaction ran standalone between turns, not that it belongs to either adjacent turn. A `session/end-seed` boundary closes an unmatched compaction request as an error at the boundary time with `Compaction was interrupted before completion.`; a later start projects as an independent request instead of overwriting the orphan.

 ## Code Mode child-call tree

-Every `ToolCallBlock` recursively owns its children through `subCalls`, in start order. Chat's Tool Definition correlates root calls and results by call id, folds Code Dispatch start/settlement records into that root Context, and projects one keyed recursive tree; child calls never become independent Chat roots. When a start falls outside the loaded window, its settlement remains renderable with `callTime: null`. A child update copies only its ancestor path, so unchanged siblings retain object identity. Edges that introduce a cycle or exceed the fixed 256-call depth limit are consumed without mutating the tree. The separate Trajectory history fold still uses Runtime's `ToolCallTree` over the same nested data contract.
+Every `ToolCallBlock` recursively owns its children through `subCalls`, in start order. Chat's Tool Definition correlates root calls and results by call id, folds Code Dispatch start/settlement records into that root Context, and projects one keyed recursive tree; child calls never become independent Chat roots. When a start falls outside the loaded window, its settlement remains renderable with `callTime: null`. A child update copies only its ancestor path, so unchanged siblings retain object identity. Edges that introduce a cycle or exceed the fixed 256-call depth limit are consumed without mutating the tree. Trajectory's Tool Definition independently assembles the same nested data contract for its target.

 ## Session title projection

--- a/packages/client/runtime/README.zh.md
+++ b/packages/client/runtime/README.zh.md
@@ -2,10 +2,9 @@

 [English](README.md) | 中文

-客户端 cordis 启动与不依赖 React 的对象服务：SlotsService 包装 SlotCore 并提供 renderer 数据源；SessionsService 拥有 Session 对象以及 Chat 所需的列表、scope 和事件窗口状态；SessionHistoryService 为检查类消费方惰性拥有彼此独立的原始历史账本，先加载当前尾部，并仅在消费方请求时向前补入一页更早历史。每份历史快照都会公开原始窗口的绝对基准序号，因此即使该页没有新增任何 surface 可见节点，消费方仍能检测到向前补页。WorkspacesService 依赖 SessionsService，拥有 Workspace 对象、列表／操作、默认目标派生，以及 New Session 空会话复用入口（`connectWorkspace`）。运行时把共享 Host 流分发给 Session、Workspace 和已激活的历史数据所有者，不让检查状态经过 Session 或 SessionManager，并把注册表失效帧桥接为类型化 ctx 事件（`commands/changed`、`session/preset-changed`、`settings/changed`、`credentials/changed`、`models/changed`），使各表面缓存无需触碰流即可重拉。`host/session-preset-changed` 还会把其中的 preset 折进会话行，因为这次切换的 RPC 回执只会到达发起它的那个客户端。客户端会话一律由 Host 创建（一次 `session.create` 同时产生 Session、agent（智能体）和 cwd）；客户端不持有任何实体化之前的会话状态——agent scope（host dsh-scope 的客户端镜像，以 agent/session 共用 id 为键）在会话行进入列表镜像时创建，并随 prune 销毁。每个 `Session` 持有一个通用的 `ProjectionValueStore`，由历史记录尾部的 `projections` 块播种，并经 `session/projection` 帧按 seq 高者胜更新；领域键（含 `todos`）经 `projections.faceOf`／`useProjection` 读取，不经 `ConversationSnapshot`。该 store 还会通过 `SessionSummary.projectionValues` 发布一份引用稳定的完整值映射，使全局列表消费方无需为每个会话创建订阅，即可复用同一组投影。
+客户端 cordis 启动与不依赖 React 的对象服务：SlotsService 包装 SlotCore 并提供 renderer 数据源；SessionsService 拥有 Session 对象、列表与 scope 状态，以及供已注册 conversation view target 共用的事件窗口与历史分页。WorkspacesService 依赖 SessionsService，拥有 Workspace 对象、列表／操作、默认目标派生，以及 New Session 空会话复用入口（`connectWorkspace`）。运行时把共享 Host 流分发给 Session 与 Workspace 所有者，并把注册表失效帧桥接为类型化 ctx 事件（`commands/changed`、`session/preset-changed`、`settings/changed`、`credentials/changed`、`models/changed`），使各表面缓存无需触碰流即可重拉。`host/session-preset-changed` 还会把其中的 preset 折进会话行，因为这次切换的 RPC 回执只会到达发起它的那个客户端。客户端会话一律由 Host 创建（一次 `session.create` 同时产生 Session、agent（智能体）和 cwd）；客户端不持有任何实体化之前的会话状态——agent scope（host dsh-scope 的客户端镜像，以 agent/session 共用 id 为键）在会话行进入列表镜像时创建，并随 prune 销毁。约定：api-contracts v3 §4。每个 `Session` 持有一个通用的 `ProjectionValueStore`，由历史记录尾部的 `projections` 块播种，并经 `session/projection` 帧按 seq 高者胜更新；领域键（含 `todos`）经 `projections.faceOf`／`useProjection` 读取，不经 `ConversationSnapshot`。该 store 还会通过 `SessionSummary.projectionValues` 发布一份引用稳定的完整值映射，使全局列表消费方无需为每个会话创建订阅，即可复用同一组投影。

 `bindSettingsScope` 面向单个由领域持有的 namespace，是 Host 侧 settings owner seam 的浏览器镜像。它在开始非阻塞初始读取前建立订阅，发布 uSES 快照（状态、分节值、revision、可写性、host／内存模式），使用已知最新 namespace revision 串行执行 `set` 写入，抑制陈旧发布，并在最新写入被拒时从 Host 状态恢复；插件释放时，它会达到完全停稳。默认解码器会对照该 namespace 自身的序列化 wire schema（经 dsh-client-schema-form 还原）校验每个分节，因此领域只有在需要比该 schema 进一步收窄时才添加解码器。回环页面使用 Host settings API，远程页面则停留在内存模式。namespace schema、默认值与实时服务归领域包所有，而非把产品政策放入运行时。
-
 ## Slot 声明注入

 `ctx.slots.inject(name, callback)` 将完整的 `SlotMap` key 作为贡献项的依赖，适用于贡献方插件可独立于声明条目激活的情形。声明存在时，它会同步运行 `callback`，否则等待；声明折叠会 dispose（资源释放）回调 effect，重新声明则会再次运行回调。控制器归调用方的插件 fiber 所有，因此卸载贡献方会取消等待或移除其活跃注册项。直接调用 `slots.register()` 向未声明 slot 注册仍会抛出异常。
@@ -42,17 +41,17 @@ SlotsService 分别为 renderer 提供 `useSessions` 与 `useWorkspaces` 的裸

 Definition 作者只根据当前事件完成匹配，为每条关联事件提供稳定业务 id，并保证 update 能按日志 `seq` 回放；renderer 只消费最终 Node data 与受限 Location value，不扫描 Session 或 Chat 集合。完整注册和分页路径见 [Conversation Node 实操手册](../../../docs/cookbook/adding-a-conversation-node.md)。

-`ui-conversation` 注册内建 Chat Definition 与 keyed Chat snapshot builder。append 来源的 user、assistant 和 Tool result 构成人类可见记录；仅供模型使用的 replacement 副本不进入 Chat，compaction 检查点除外，它会成为独立标记，并在更早分页补齐 summary 溯源后更新。持久 inbox splice Context 能把 next-step 用户消息判定为 steering，无须让 inbox 状态成为 Session 特例。上下文消息保留生产者 provenance 与 form。StatsLine 读取 `ConversationSnapshot.chat.legacy.nodes`；Session 则把该 legacy slice 镜像到顶层 `nodes`、`partial` 和 `runningCalls` 公共兼容字段，无须运行第二套业务 fold。Trajectory 不消费这两种兼容表面；在它获得独立注册 target 之前，已激活的 `session-history` inspection 继续维护独立 fold。
+`ui-conversation` 注册内建 Chat Definition 与 keyed Chat snapshot builder。append 来源的 user、assistant 和 Tool result 构成人类可见记录；仅供模型使用的 replacement 副本不进入 Chat，compaction 检查点除外，它会成为独立标记，并在更早分页补齐 summary 溯源后更新。持久 inbox splice Context 能把 next-step 用户消息判定为 steering，无须让 inbox 状态成为 Session 特例。上下文消息保留生产者 provenance 与 form。StatsLine 读取 `ConversationSnapshot.chat.legacy.nodes`；Session 则把该 legacy slice 镜像到顶层 `nodes`、`partial` 和 `runningCalls` 公共兼容字段，无须运行第二套业务 fold。`ui-trajectory` 在同一个 Session 窗口上注册独立 Definition 与 target builder；它保留现有的 stage-oriented view model，既不消费 Chat 兼容字段，也不运行另一套 history fold。

 Chat builder 为每个 Session 保留一个 mutable keyed store。内容更新只通知受影响的 node key；结构变化才重建顺序和 Location 成员关系；prepend 只增加行，不替换既有 keyed value。每个 Assistant chunk 都会更新 Definition State，但最多每个 animation frame 请求一次物化；final message 与 Turn/Step 关闭会立即发布。参见 [Client Tool 展示所有权决策](../../../.agents/notes/implemented/architecture/2026-08-08-client-tool-presentation-ownership.md)。

-## 请求检查
+## Trajectory 请求数据

-`SessionHistoryInspection.requests` 是一条按时间顺序排列、以用途为判别字段的提供方请求流。助手请求始终携带数值型 `turn` 与 `step`；压缩请求携带 `step: 0`，其 `turn` 所有者可以是 `null`。这个 null 所有者表示手动压缩独立运行在两个轮次之间，并不表示它属于任一相邻轮次。`session/end-seed` 边界会在边界时刻将未匹配的压缩请求以错误状态结束，错误固定为 `Compaction was interrupted before completion.`；后续 start 会投影为独立请求，而不会覆盖这项遗留的未匹配请求。
+Trajectory Definition 组装出一条按时间顺序排列、以用途为判别字段的提供方请求流。助手请求始终携带数值型 `turn` 与 `step`；压缩请求携带 `step: 0`，其 `turn` 所有者可以是 `null`。这个 null 所有者表示手动压缩独立运行在两个轮次之间，并不表示它属于任一相邻轮次。`session/end-seed` 边界会在边界时刻将未匹配的压缩请求以错误状态结束，错误固定为 `Compaction was interrupted before completion.`；后续 start 会投影为独立请求，而不会覆盖这项遗留的未匹配请求。

 ## Code Mode 子调用树

-每个 `ToolCallBlock` 都通过 `subCalls` 按启动顺序递归拥有自己的子调用。Chat 的 Tool Definition 按 call id 关联 root call 与 result，把 Code Dispatch 的 start/settlement 记录折叠进该 root Context，并投影为一棵 keyed 递归树；child call 不会成为独立 Chat root。start 落在已加载窗口之外时，其 settlement 仍以 `callTime: null` 渲染。一次 child 更新只复制其祖先链，因此未变化的 sibling 保持对象身份。会引入环或超过固定 256 层深度上限的边会被消费，但不会修改树。独立的 Trajectory history fold 仍通过 Runtime 的 `ToolCallTree` 生成同一种嵌套数据契约。
+每个 `ToolCallBlock` 都通过 `subCalls` 按启动顺序递归拥有自己的子调用。Chat 的 Tool Definition 按 call id 关联 root call 与 result，把 Code Dispatch 的 start/settlement 记录折叠进该 root Context，并投影为一棵 keyed 递归树；child call 不会成为独立 Chat root。start 落在已加载窗口之外时，其 settlement 仍以 `callTime: null` 渲染。一次 child 更新只复制其祖先链，因此未变化的 sibling 保持对象身份。会引入环或超过固定 256 层深度上限的边会被消费，但不会修改树。Trajectory 的 Tool Definition 为自己的 target 独立组装同一种嵌套数据契约。

 ## Session 标题投影

--- a/packages/client/runtime/package.json
+++ b/packages/client/runtime/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-runtime",
  "description": "Client core services: SlotsService, SessionsService (scope tree + object layer)",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/runtime"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,13 +29,15 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [
-      "@deepseek-ai/dsh-client-connection",
-      "@deepseek-ai/dsh-typert-registry"
-    ],
-    "platform": "web",
-    "immediately": true
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-connection",
+        "@deepseek-ai/dsh-typert-registry"
+      ],
+      "platform": "web",
+      "immediately": true
+    }
  },
  "license": "BSD-3-Clause",
  "dependencies": {
@@ -37,7 +46,6 @@
    "@deepseek-ai/dsh-client-connection": "workspace:^",
    "@deepseek-ai/dsh-client-schema-form": "workspace:^",
    "@deepseek-ai/dsh-commands": "workspace:^",
-    "@deepseek-ai/dsh-compact": "workspace:^",
    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
    "@deepseek-ai/dsh-host-apiproxy": "workspace:^",
    "@deepseek-ai/dsh-llm": "workspace:^",
@@ -51,10 +59,10 @@
    "zustand": "~4.4.7"
  },
  "peerDependencies": {
-    "@deepseek-ai/dsh-invariants": "^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"
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-type-meta": "workspace:^",
+    "@deepseek-ai/dsh-typert-registry": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "devDependencies": {
    "@deepseek-ai/dsh-invariants": "workspace:^",
@@ -62,8 +70,8 @@
    "@deepseek-ai/dsh-type-meta": "workspace:^",
    "@deepseek-ai/dsh-typert-registry": "workspace:^",
    "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/cordis": "workspace:^",
+    "@deepseek-ai/schemastery": "workspace:^"
  },
  "files": [
    "lib/index.js",
--- a/packages/client/runtime/src/client/agents/scope.ts
+++ b/packages/client/runtime/src/client/agents/scope.ts
@@ -15,8 +15,8 @@
 * — a cold session's host Agent is already disposed while its client actx
 * stays alive for history viewing.
 */
-import { Context as CordisContext } from 'cordis'
-import type { Context, Fiber } from 'cordis'
+import { Context as CordisContext } from '@deepseek-ai/cordis'
+import type { Context, Fiber } from '@deepseek-ai/cordis'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import type { TypeRTClientRemote, TypeRTRemoteScopeApi } from '@deepseek-ai/dsh-type-meta'

--- a/packages/client/runtime/src/client/contract/conversation.ts
+++ b/packages/client/runtime/src/client/contract/conversation.ts
@@ -110,6 +110,17 @@ export interface ConversationViewNode {
  readonly data: unknown
 }

+/** Merge-extensible immutable snapshots published by registered view targets. */
+export interface ConversationViewSnapshotMap {}
+
+/** Stable reader over the latest snapshot of every registered view target. */
+export interface ConversationViewSnapshotStore {
+  /** @param target - registered view target. @returns its current snapshot. */
+  get<Target extends Extract<keyof ConversationViewSnapshotMap, string>>(
+    target: Target,
+  ): ConversationViewSnapshotMap[Target] | undefined
+}
+
 /** Final Chat render unit produced directly by a business Definition. */
 export interface ChatConversationViewNode extends ConversationViewNode {
  readonly target: 'chat'
@@ -159,6 +170,8 @@ export type ConversationLocationDataScope = 'step' | 'turn'
 /** One independently registered business Event-to-Node state machine. */
 export interface ConversationNodeDefinition<State = unknown> {
  readonly kind: string
+  /** Sole view target owned by this Definition; omitted for state-only Contexts. */
+  readonly target?: string
  /**
   * Extract this Definition's stable business identity from one event.
   * @param event - raw Session event; no Context or history access is available.
@@ -207,15 +220,11 @@ export interface ConversationNodeDefinition<State = unknown> {
    scope: ConversationLocationDataScope,
  ): ConversationLocationData | null
  /**
-   * Materialize one final Node for a registered view target.
+   * Materialize one final Node for this Definition's declared view target.
   * @param context - latest complete Context.
-   * @param target - registered view target such as `chat`.
   * @returns final Node, or null when this Context is not currently visible.
   */
-  buildViewNode(
-    context: ConversationNodeContext<State>,
-    target: string,
-  ): ConversationViewNode | null
+  buildViewNode?(context: ConversationNodeContext<State>): ConversationViewNode | null
 }

 /** Reference-stable Turn/Step facts published beside view Nodes. */
--- a/packages/client/runtime/src/client/contract/session-history.ts
+++ b/packages/client/runtime/src/client/contract/session-history.ts
@@ -1,43 +0,0 @@
-import type {
-  RpcError, SessionId,
-} from '@deepseek-ai/dsh-client-connection/client'
-import type { SessionHistoryInspection } from '../sessions/history.ts'
-import type { ObservableSnapshot } from './store.ts'
-
-/** Observable state of one independently loaded session history ledger. */
-export interface SessionHistorySnapshot {
-  state: 'cold' | 'loading' | 'ready' | 'error'
-  error: RpcError | null
-  hasMore: boolean
-  /** Absolute sequence of the first loaded raw event, or zero for an empty window. */
-  baseSeq: number
-  inspection: SessionHistoryInspection
-}
-
-/** Read-only history source addressed by session id. */
-export interface SessionHistoryFace
-  extends ObservableSnapshot<SessionHistorySnapshot> {
-  readonly sessionId: SessionId
-  /**
-   * Load the current tail without reading older pages.
-   * @param signal - Consumer lifetime.
-   * @returns When the tail is ready or loading fails.
-   */
-  loadTail(signal?: AbortSignal): Promise<void>
-  /**
-   * Prepend one older page when the current window has a predecessor.
-   * @param signal - Consumer lifetime.
-   * @returns Whether the loaded window advanced.
-   */
-  loadOlder(signal?: AbortSignal): Promise<boolean>
-}
-
-/** Runtime service resolving independent history sources. */
-export interface ISessionHistory {
-  /**
-   * Resolve the identity-stable source for a session.
-   * @param sessionId - Host session identity.
-   * @returns The source owned outside Session and SessionManager.
-   */
-  source(sessionId: SessionId): SessionHistoryFace
-}
--- a/packages/client/runtime/src/client/contract/sessions.ts
+++ b/packages/client/runtime/src/client/contract/sessions.ts
@@ -7,7 +7,7 @@
 * [SessionsPort](./sessions-port.ts). Widening this interface is the
 * explicit act of widening what features may do to the sessions domain.
 */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type {
  RpcResult, SessionId, SubagentAddress,
 } from '@deepseek-ai/dsh-client-connection/client'
--- a/packages/client/runtime/src/client/conversation/definition-registry.ts
+++ b/packages/client/runtime/src/client/conversation/definition-registry.ts
@@ -1,4 +1,4 @@
-import { Service } from 'cordis'
+import { Service } from '@deepseek-ai/cordis'

 /** Shared lifecycle and stable-entry storage for one Conversation Definition registry. */
 export abstract class ConversationDefinitionRegistry<Definition> extends Service {
--- a/packages/client/runtime/src/client/conversation/event-registry.ts
+++ b/packages/client/runtime/src/client/conversation/event-registry.ts
@@ -1,4 +1,4 @@
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { ConversationNodeDefinition } from '../contract/conversation.ts'
 import { ConversationDefinitionRegistry } from './definition-registry.ts'

@@ -17,6 +17,7 @@ export class ConversationEventRegistry extends ConversationDefinitionRegistry<Co
   * @returns idempotent disposer.
   */
  register(definition: ConversationNodeDefinition): () => void {
+    assertDefinitionTarget(definition)
    return this.registerDefinition(
      definition.kind,
      definition,
@@ -31,6 +32,9 @@ export class ConversationEventRegistry extends ConversationDefinitionRegistry<Co
   * @returns idempotent disposer.
   */
  registerFallback(definition: ConversationNodeDefinition): () => void {
+    assertDefinitionTarget(definition)
+    const target = definition.target
+    if (target === undefined) throw new Error('conversation fallback Definition must declare a target')
    if (this.fallback !== undefined) throw new Error('conversation fallback Definition is already registered')
    const owner = this.ctx
    const dispose = owner.effect(() => {
@@ -52,5 +56,12 @@ export class ConversationEventRegistry extends ConversationDefinitionRegistry<Co
  fallbackEntry(): ConversationNodeDefinition | undefined {
    return this.fallback
  }
-
+}
+
+function assertDefinitionTarget(definition: ConversationNodeDefinition): void {
+  if ((definition.target === undefined) !== (definition.buildViewNode === undefined)) {
+    throw new Error(
+      `conversation Definition "${definition.kind}" must declare target and buildViewNode together`,
+    )
+  }
 }
--- a/packages/client/runtime/src/client/conversation/view-registry.ts
+++ b/packages/client/runtime/src/client/conversation/view-registry.ts
@@ -1,4 +1,4 @@
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { ConversationViewDefinition } from '../contract/conversation.ts'
 import { ConversationDefinitionRegistry } from './definition-registry.ts'

--- a/packages/client/runtime/src/client/index.ts
+++ b/packages/client/runtime/src/client/index.ts
@@ -1,12 +1,11 @@
 /** Browser runtime services for slots, sessions, workspaces, and connection-stream delivery. */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { ConnectionHandle, SessionId } from '@deepseek-ai/dsh-client-connection/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'
 import type { SessionListState } from './sessions/service.ts'
-import { SessionHistoryService } from './session-history/service.ts'
 import { WorkspacesService } from './workspaces/service.ts'
 import type { ConversationSnapshot } from './sessions/conversation.ts'
 import type { UseProjection } from './sessions/projection-store.ts'
@@ -28,12 +27,12 @@ export type {
  ConversationLocation, ConversationMatch, ConversationMatchResult,
  ConversationNodeContext, ConversationNodeDefinition, ConversationPreviousContext,
  ConversationPublication, ConversationTimelineSnapshot, ConversationTurnDataMap, ConversationViewBuilder,
-  ConversationViewDefinition, ConversationViewNode, StepLocation, TurnLocation,
+  ConversationViewDefinition, ConversationViewNode, ConversationViewSnapshotMap,
+  ConversationViewSnapshotStore, StepLocation, TurnLocation,
 } from './contract/conversation.ts'
 export type { ConversationRuntime } from './sessions/conversation-assembler.ts'
 export type { RootOwnerProps } from './slots.ts'
 export { SessionCreateError, SessionsService, scopeOf, workspaceTitleOf } from './sessions/service.ts'
-export { SessionHistoryService } from './session-history/service.ts'
 export { indexSubagentDescendants } from './sessions/subagent-lineage.ts'
 export type { SubagentDescendantSummary } from './sessions/subagent-lineage.ts'
 // The provide channel is shared with the client test runtime (one
@@ -48,9 +47,6 @@ export type { SettingsScope, SettingsScopeSnapshot, SettingsScopeSpec } from './
 export { resolveWorkspacePath } from './workspaces/path.ts'
 export type { Session } from './sessions/session.ts'
 export type { ISession, ProjectionsFace, SessionFace } from './contract/session.ts'
-export type {
-  ISessionHistory, SessionHistoryFace, SessionHistorySnapshot,
-} from './contract/session-history.ts'
 export type { AgentContext, ISessions } from './contract/sessions.ts'
 export type { IWorkspaces } from './contract/workspaces.ts'
 export type {
@@ -76,7 +72,9 @@ export type {
  LegacyConversationSlice, PartialAssistant, RunningToolCall,
  SteeringMessageNode, TodoItem, ToolCallBlock, ToolResultNode, TurnErrorNode, UnknownSurfaceNode, UserMessageNode,
 } from './sessions/conversation.ts'
-export { EMPTY_CHAT_SNAPSHOT, toAssistantBlock, toAssistantBlocks } from './sessions/conversation.ts'
+export {
+  EMPTY_CHAT_SNAPSHOT, EMPTY_CONVERSATION_VIEWS, toAssistantBlock, toAssistantBlocks,
+} from './sessions/conversation.ts'
 export { emptyAssistantBlock } from './sessions/partial.ts'
 export { isTokenDelta } from './sessions/assistant-timing.ts'
 export { contextForm, contextProvenance } from './sessions/context-provenance.ts'
@@ -90,8 +88,6 @@ export type {
 export type {
  ConversationPromptSnapshot, RequestInspectionSnapshot, RequestPromptChange, RequestView,
 } from './sessions/request-inspection.ts'
-export type { ConversationHistoryProjection } from './session-history/history-fold.ts'
-export type { SessionHistoryInspection } from './sessions/history.ts'
 export { PendingWait } from './sessions/pending.ts'
 export type {
  PendingInteraction, PendingInteractionStatus, PendingKind, PendingPayloads,
@@ -146,7 +142,7 @@ declare module '@deepseek-ai/dsh-client-ui-slots' {
  }
 }

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Events {
    /**
     * A slot's definition or registration set changed.
@@ -211,8 +207,6 @@ declare module 'cordis' {
    conversationViews: import('./conversation/view-registry.ts').ConversationViewRegistry
    /** The outward face only; the concrete service stays inside the runtime. */
    sessions: import('./contract/sessions.ts').ISessions
-    /** Read-only history sources isolated from Chat sessions and workspace state. */
-    sessionHistory: import('./contract/session-history.ts').ISessionHistory
    /** The outward face only; the concrete service stays inside the runtime. */
    workspaces: import('./contract/workspaces.ts').IWorkspaces
  }
@@ -235,7 +229,6 @@ export function apply(ctx: Context): void {
  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(
    () => workspaces.startInitialSelection(),
@@ -244,11 +237,6 @@ export function apply(ctx: Context): void {
  const loop = connection.start({
    onMuxEnvelope: (envelope) => {
      sessions.handleMuxEnvelope(envelope)
-      try {
-        sessionHistory.handleMuxEnvelope(envelope)
-      } catch (error) {
-        console.error('[web-runtime] history frame routing failed:', error)
-      }
    },
    onHostEnvelope: (envelope) => {
      sessions.handleHostEnvelope(envelope)
@@ -264,21 +252,11 @@ export function apply(ctx: Context): void {
      else if (frame.type === 'host/settings-changed') ctx.emit('settings/changed', frame.ns)
      else if (frame.type === 'host/credentials-changed') ctx.emit('credentials/changed', frame.ref)
      else if (frame.type === 'host/models-changed') ctx.emit('models/changed')
-      try {
-        sessionHistory.handleHostEnvelope(envelope)
-      } catch (error) {
-        console.error('[web-runtime] history host-frame routing failed:', error)
-      }
    },
    onConnected: () => {
      sessions.handleConnected()
      workspaces.handleConnected()
      ctx.emit('connection/reset')
-      try {
-        sessionHistory.handleConnected()
-      } catch (error) {
-        console.error('[web-runtime] history reconnect failed:', error)
-      }
    },
    onStateChange: (state) => {
      // Generation death fires before any next-generation frame can arrive
@@ -286,11 +264,6 @@ export function apply(ctx: Context): void {
      // the only safe moment to drop generation-scoped interaction state.
      if (state === 'reconnecting') {
        sessions.handleDisconnected()
-        try {
-          sessionHistory.handleDisconnected()
-        } catch (error) {
-          console.error('[web-runtime] history disconnect failed:', error)
-        }
      }
    },
  })
--- a/packages/client/runtime/src/client/session-history/history-fold.ts
+++ b/packages/client/runtime/src/client/session-history/history-fold.ts
@@ -1,428 +0,0 @@
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import {
-  SurfaceManager, isSurfaceEligibleType, isSurfaceEvent,
-} from '@deepseek-ai/dsh-session/surface'
-import type {
-  HistoryEntry, ToolCallView, ToolResultView,
-} from '@deepseek-ai/dsh-client-connection/client'
-import type {
-  AssistantRequestConfig, AssistantTiming, ConversationNode,
-  PartialAssistant, RunningToolCall,
-} from '../sessions/conversation.ts'
-import { toAssistantBlocks } from '../sessions/conversation.ts'
-import { contextForm, contextProvenance } from '../sessions/context-provenance.ts'
-import { SteeringHistory } from '../sessions/steering-history.ts'
-import type {
-  ConversationContext, ConversationContextOriginKind,
-} from '../sessions/conversation-context.ts'
-import type { ConversationPromptSnapshot } from '../sessions/request-inspection.ts'
-import { PartialAccumulator } from '../sessions/partial.ts'
-import type { AssistantStepMetadata } from '../sessions/assistant-timing.ts'
-import { indexAssistantStepTiming, settledAssistantTiming } from '../sessions/assistant-timing.ts'
-import { ToolCallTree } from '../sessions/tool-call-tree.ts'
-
-interface CallIndexEntry {
-  name: string
-  argsRaw: string
-  time: number
-  callView: ToolCallView | null
-}
-
-interface FoldedContext {
-  generation: number
-  nodes: readonly number[]
-  originSeq?: number
-}
-
-/** Immutable conversation projections derived only from the history source. */
-export interface ConversationHistoryProjection {
-  eventNodes: readonly ConversationNode[]
-  contexts: readonly ConversationContext[]
-  interruptedNodes: readonly ConversationNode[]
-  partial: PartialAssistant | null
-  runningCalls: readonly RunningToolCall[]
-}
-
-function replacementCrossesWindowHead(event: SessionEvent, baseSeq: number): boolean {
-  if (!isSurfaceEvent(event) || event.surfaceOp === 'append') return false
-  return event.surfaceOp.start < baseSeq || event.surfaceOp.end < baseSeq
-}
-
-function contextOriginKind(event: SessionEvent | undefined): ConversationContextOriginKind {
-  if (event?.type !== 'user/message') return 'rewrite'
-  const source = event.data.source
-  if (typeof source === 'object' && 'kind' in source && 'plugin' in source) {
-    if (source.plugin === 'compact') return 'compaction'
-    if (source.plugin === 'rewind') return 'rewind'
-  }
-  return 'rewrite'
-}
-
-function foldContexts(events: readonly SessionEvent[]): readonly FoldedContext[] {
-  const replay: SessionEvent[] = []
-  const originalSeqs: number[] = []
-  const rebasedSeqByOriginal = new Map<number, number>()
-  const surface = new SurfaceManager(replay)
-  const contexts: FoldedContext[] = []
-  let generation = 0
-  let originSeq: number | undefined
-  const originalNodes = () => surface.nodes.map((seq) => {
-    const original = originalSeqs[seq]
-    if (original === undefined) throw new Error(`rebased surface seq ${seq} has no origin`)
-    return original
-  })
-  for (const event of events) {
-    if (!isSurfaceEvent(event)) continue
-    if (event.surfaceOp !== 'append') {
-      contexts.push({
-        generation,
-        nodes: originalNodes(),
-        ...(originSeq === undefined ? {} : { originSeq }),
-      })
-      generation++
-      originSeq = event.seq
-    }
-    const rebasedSeq = replay.length
-    const {
-      sourceEventSeqs: rawSources,
-      ...eventWithoutSources
-    } = event as SessionEvent & { sourceEventSeqs?: readonly number[] }
-    const mappedSourceEventSeqs = rawSources?.flatMap((seq) => {
-      const rebased = rebasedSeqByOriginal.get(seq)
-      return rebased === undefined ? [] : [rebased]
-    })
-    const sourceEventSeqs = mappedSourceEventSeqs?.length === 0
-      ? undefined
-      : mappedSourceEventSeqs
-    const surfaceOp = event.surfaceOp === 'append'
-      ? event.surfaceOp
-      : {
-        ...event.surfaceOp,
-        start: rebasedSeqByOriginal.get(event.surfaceOp.start) ?? event.surfaceOp.start,
-        end: rebasedSeqByOriginal.get(event.surfaceOp.end) ?? event.surfaceOp.end,
-      }
-    originalSeqs.push(event.seq)
-    rebasedSeqByOriginal.set(event.seq, rebasedSeq)
-    replay.push({
-      ...eventWithoutSources,
-      seq: rebasedSeq,
-      surfaceOp,
-      ...(sourceEventSeqs === undefined ? {} : { sourceEventSeqs }),
-    } as SessionEvent)
-  }
-  contexts.push({
-    generation,
-    nodes: originalNodes(),
-    ...(originSeq === undefined ? {} : { originSeq }),
-  })
-  return contexts
-}
-
-// History projection owns its node mapping so Chat's live adapter remains free
-// of inspection metadata and lifecycle coupling.
-/* jscpd:ignore-start */
-function materializeNode(
-  event: SessionEvent,
-  callIndex: ReadonlyMap<string, CallIndexEntry>,
-  resultView: ToolResultView | null,
-  assistantTiming: AssistantTiming | undefined,
-  requestConfig: AssistantRequestConfig | undefined,
-  steering: boolean,
-): ConversationNode {
-  switch (event.type) {
-    case 'user/message':
-      if (event.data.source.kind !== 'user') {
-        return {
-          kind: 'context', seq: event.seq, time: event.time,
-          content: event.data.content, source: event.data.source,
-          provenance: contextProvenance(event.data.source),
-          form: contextForm(event.data.source),
-        }
-      }
-      if (steering) {
-        return {
-          kind: 'steering', messageId: event.data.id,
-          seq: event.seq, time: event.time,
-          content: event.data.content, source: event.data.source,
-        }
-      }
-      return {
-        kind: 'user', seq: event.seq, time: event.time,
-        content: event.data.content, source: event.data.source,
-      }
-    case 'assistant/message':
-      return {
-        kind: 'assistant', seq: event.seq, time: event.time,
-        turn: event.data.turn, step: event.data.step,
-        blocks: toAssistantBlocks(event.data.message.content), usage: event.data.usage,
-        provenance: {
-          provider: event.data.message.source.provider,
-          model: event.data.message.source.model,
-        },
-        ...(requestConfig === undefined ? {} : { requestConfig }),
-        ...(assistantTiming === undefined ? {} : { timing: assistantTiming }),
-      }
-    case 'tool/result': {
-      const result = event.data.message.content[0]
-      const callId = String(event.data.message.source.callId)
-      const call = callIndex.get(callId)
-      return {
-        kind: 'tool-result', seq: event.seq, time: event.time,
-        callId,
-        call: call === undefined ? null : { name: call.name, argsRaw: call.argsRaw },
-        callTime: call?.time ?? null,
-        content: result.content, isError: result.isError === true,
-        ...(event.data.error === undefined ? {} : { error: event.data.error }),
-        meta: event.data.meta,
-        callView: call?.callView ?? null,
-        resultView,
-        subCalls: [],
-      }
-    }
-    default:
-      return {
-        kind: 'unknown', seq: event.seq, time: event.time,
-        type: event.type, data: (event as { data?: unknown }).data,
-      }
-  }
-}
-/* jscpd:ignore-end */
-
-interface TransientProjection extends Pick<
-  ConversationHistoryProjection,
-  'interruptedNodes' | 'partial' | 'runningCalls'
-> {
-  toolCallTree: ToolCallTree
-}
-
-function projectTransient(entries: readonly HistoryEntry[]): TransientProjection {
-  let partial: PartialAccumulator | null = null
-  const openCalls = new Map<string, RunningToolCall>()
-  const interruptedNodes: ConversationNode[] = []
-  const toolCallTree = new ToolCallTree()
-
-  for (const entry of entries) {
-    const { event } = entry
-    if (toolCallTree.apply(event)) continue
-    switch (event.type) {
-      case 'assistant/chunk': {
-        const { turn, step, chunk } = event.data
-        if (partial === null || partial.turn !== turn || partial.step !== step) {
-          partial = new PartialAccumulator(turn, step)
-        }
-        partial.push(chunk)
-        break
-      }
-      case 'assistant/message':
-        if (partial?.turn === event.data.turn && partial.step === event.data.step) partial = null
-        break
-      case 'tool/call':
-        // History reconstructs its own in-flight index; this intentionally
-        // mirrors the published Chat node shape, not Chat's mutable state.
-        /* jscpd:ignore-start */
-        openCalls.set(String(event.data.callId), {
-          callId: String(event.data.callId),
-          name: event.data.name,
-          argsRaw: event.data.arguments,
-          turn: event.data.turn,
-          step: event.data.step,
-          time: event.time,
-          callView: entry.view?.for === 'call' ? entry.view.view : null,
-          subCalls: [],
-        })
-        /* jscpd:ignore-end */
-        break
-      case 'tool/result':
-        openCalls.delete(String(event.data.message.source.callId))
-        break
-      case 'turn/end': {
-        if (partial !== null && partial.turn === event.data.turn) {
-          const { blocks } = partial.toPartial()
-          const visible = blocks.some(block =>
-            block.kind === 'text' || block.kind === 'reasoning' ? block.text !== '' : true)
-          if (visible) {
-            interruptedNodes.push({
-              kind: 'assistant', seq: event.seq - 0.9, time: event.time,
-              turn: partial.turn, step: partial.step, blocks, interrupted: true,
-            })
-          }
-          partial = null
-        }
-        let callOffset = 0
-        for (const [callId, call] of openCalls) {
-          if (call.turn !== event.data.turn) continue
-          openCalls.delete(callId)
-          // Interrupted terminal nodes are reconstructed independently so a
-          // Trajectory replay cannot observe Session's frozen-node lifecycle.
-          /* jscpd:ignore-start */
-          interruptedNodes.push({
-            kind: 'tool-result', seq: event.seq - 0.8 + callOffset++ * 0.01,
-            time: event.time,
-            callId,
-            call: { name: call.name, argsRaw: call.argsRaw },
-            callTime: call.time,
-            content: [],
-            isError: true,
-            error: { name: 'Interrupted', code: 'interrupted' },
-            callView: call.callView,
-            resultView: null,
-            subCalls: [],
-          })
-          /* jscpd:ignore-end */
-        }
-        break
-      }
-      default:
-        break
-    }
-  }
-
-  return {
-    interruptedNodes,
-    partial: partial?.toPartial() ?? null,
-    runningCalls: [...openCalls.values()],
-    toolCallTree,
-  }
-}
-
-/**
- * Project one immutable history ledger without reading or mutating Chat state.
- * @param entries - Contiguous history entries in sequence order.
- * @returns Event order, context lineage, and transient tail state.
- */
-export function projectConversationHistory(
-  entries: readonly HistoryEntry[],
-): ConversationHistoryProjection {
-  const events = entries.map(entry => entry.event)
-  const steeringHistory = new SteeringHistory()
-  const steeringSeqs = new Set<number>()
-  for (const event of events) {
-    if (steeringHistory.apply(event)) steeringSeqs.add(event.seq)
-  }
-  const baseSeq = events[0]?.seq ?? 0
-  const eventsBySeq = new Map(events.map(event => [event.seq, event]))
-  const callIndex = new Map<string, CallIndexEntry>()
-  const resultViews = new Map<number, ToolResultView>()
-  const assistantSteps = new Map<string, AssistantStepMetadata>()
-  const assistantTimings = new Map<number, AssistantTiming>()
-  const assistantRequestConfigs = new Map<number, AssistantRequestConfig>()
-  const promptsByContext = new Map<number, ConversationPromptSnapshot>()
-  let activeRequestConfig: AssistantRequestConfig | undefined
-  let activePrompt: ConversationPromptSnapshot | undefined
-  let contextGeneration = 0
-
-  for (const [index, event] of events.entries()) {
-    const view = entries[index]?.view
-    if (event.type === 'tool/call') {
-      callIndex.set(String(event.data.callId), {
-        name: event.data.name,
-        argsRaw: event.data.arguments,
-        time: event.time,
-        callView: view?.for === 'call' ? view.view : null,
-      })
-    } else if (event.type === 'tool/result' && view?.for === 'result') {
-      resultViews.set(event.seq, view.view)
-    }
-    if (isSurfaceEvent(event) && event.surfaceOp !== 'append') {
-      contextGeneration++
-      if (activePrompt !== undefined) promptsByContext.set(contextGeneration, activePrompt)
-    }
-    indexAssistantStepTiming(assistantSteps, event)
-    if (event.type === 'request/header') {
-      activeRequestConfig = event.data.header.config
-      activePrompt = {
-        config: event.data.header.config,
-        system: event.data.header.system ?? '',
-        tools: event.data.header.tools ?? [],
-      }
-      promptsByContext.set(contextGeneration, activePrompt)
-    } else if (event.type === 'assistant/message') {
-      assistantTimings.set(
-        event.seq,
-        settledAssistantTiming(assistantSteps, event.data.turn, event.data.step, event.time),
-      )
-      if (activeRequestConfig !== undefined) {
-        assistantRequestConfigs.set(event.seq, activeRequestConfig)
-      }
-    }
-  }
-
-  const nodeCache = new Map<number, ConversationNode>()
-  const materialize = (seq: number): ConversationNode | undefined => {
-    const cached = nodeCache.get(seq)
-    if (cached !== undefined) return cached
-    const event = eventsBySeq.get(seq)
-    if (event === undefined || !isSurfaceEligibleType(event.type)) return
-    const node = materializeNode(
-      event,
-      callIndex,
-      resultViews.get(seq) ?? null,
-      assistantTimings.get(seq),
-      assistantRequestConfigs.get(seq),
-      steeringSeqs.has(seq),
-    )
-    nodeCache.set(seq, node)
-    return node
-  }
-  const eventNodes = events.flatMap((event) => {
-    const node = materialize(event.seq)
-    return node === undefined ? [] : [node]
-  })
-
-  let contexts: readonly ConversationContext[]
-  if (events.some(event => replacementCrossesWindowHead(event, baseSeq))) {
-    contexts = [{
-      id: 0,
-      ...(activePrompt === undefined ? {} : { prompt: activePrompt }),
-      nodes: eventNodes,
-    }]
-  } else {
-    try {
-      contexts = foldContexts(events).map((context): ConversationContext => {
-        const nodes = context.nodes.flatMap((seq) => {
-          const node = materialize(seq)
-          return node === undefined ? [] : [node]
-        })
-        const prompt = promptsByContext.get(context.generation)
-        if (context.originSeq === undefined) {
-          return {
-            id: context.generation,
-            ...(prompt === undefined ? {} : { prompt }),
-            nodes,
-          }
-        }
-        const originEvent = eventsBySeq.get(context.originSeq)
-        return {
-          id: context.generation,
-          parentId: context.generation - 1,
-          origin: contextOriginKind(originEvent),
-          originSeq: context.originSeq,
-          ...(originEvent === undefined ? {} : { createdAt: originEvent.time }),
-          ...(prompt === undefined ? {} : { prompt }),
-          nodes,
-        }
-      })
-    } catch (error) {
-      console.error('[web-runtime] history surface fold failed, using event order:', error)
-      contexts = [{
-        id: 0,
-        ...(activePrompt === undefined ? {} : { prompt: activePrompt }),
-        nodes: eventNodes,
-      }]
-    }
-  }
-
-  const transient = projectTransient(entries)
-  const projectedEventNodes = transient.toolCallTree.projectNodes(eventNodes)
-  const projectedContexts = contexts.map((context): ConversationContext => {
-    const nodes = transient.toolCallTree.projectNodes(context.nodes)
-    return nodes === context.nodes ? context : { ...context, nodes }
-  })
-  return {
-    eventNodes: projectedEventNodes,
-    contexts: projectedContexts,
-    interruptedNodes: transient.toolCallTree.projectNodes(transient.interruptedNodes),
-    partial: transient.partial,
-    runningCalls: transient.toolCallTree.projectRunningCalls(transient.runningCalls),
-  }
-}
--- a/packages/client/runtime/src/client/session-history/service.ts
+++ b/packages/client/runtime/src/client/session-history/service.ts
@@ -1,66 +0,0 @@
-import type { Context } from 'cordis'
-import type {
-  HostFrame, IApiClient, MuxFrame, RpcRequest, SessionId,
-} from '@deepseek-ai/dsh-client-connection/client'
-import type {
-  ISessionHistory, SessionHistoryFace,
-} from '../contract/session-history.ts'
-import { SessionHistorySource } from './source.ts'
-
-/** Root registry and frame router for independent inspection histories. */
-export class SessionHistoryService implements ISessionHistory {
-  private readonly sources = new Map<SessionId, SessionHistorySource>()
-
-  /**
-   * @param ctx - Client root context.
-   * @param api - Shared wire client.
-   */
-  constructor(ctx: Context, private readonly api: IApiClient) {
-    ctx.reflect.provide('sessionHistory', this, undefined)
-  }
-
-  /**
-   * Resolve one identity-stable history source.
-   * @param sessionId - Host session identity.
-   * @returns Source independent from SessionManager.
-   */
-  source(sessionId: SessionId): SessionHistoryFace {
-    let source = this.sources.get(sessionId)
-    if (source === undefined) {
-      source = new SessionHistorySource(sessionId, this.api)
-      this.sources.set(sessionId, source)
-    }
-    return source
-  }
-
-  /**
-   * Route history-relevant mux frames only to an existing source.
-   * @param envelope - Validated mux envelope.
-   */
-  handleMuxEnvelope(envelope: RpcRequest<MuxFrame>): void {
-    const frame = envelope.payload
-    if (frame.type === 'stream/error') return
-    this.sources.get(frame.sessionId)?.handleMuxFrame(frame)
-  }
-
-  /**
-   * Drop a removed session's independent history source.
-   * @param envelope - Validated host envelope.
-   */
-  handleHostEnvelope(envelope: RpcRequest<HostFrame>): void {
-    const frame = envelope.payload
-    if (frame.type !== 'host/session-removed') return
-    this.sources.get(frame.sessionId)?.dispose()
-    this.sources.delete(frame.sessionId)
-  }
-
-  /** Invalidate requests from the dead connection generation. */
-  handleDisconnected(): void {
-    for (const source of this.sources.values()) source.handleDisconnected()
-  }
-
-  /** Rebuild every previously activated source from the new generation. */
-  handleConnected(): void {
-    for (const source of this.sources.values()) source.resync()
-  }
-}
--- a/packages/client/runtime/src/client/session-history/source.ts
+++ b/packages/client/runtime/src/client/session-history/source.ts
@@ -1,432 +0,0 @@
-import type {
-  HistoryEntry, IApiClient, MuxFrame, RpcError, SessionId,
-} from '@deepseek-ai/dsh-client-connection/client'
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import { transportError } from '@deepseek-ai/dsh-host-apiproxy/api'
-import type {
-  SessionHistoryFace, SessionHistorySnapshot,
-} from '../contract/session-history.ts'
-import {
-  compactHistoryInspectionEntries, createHistoryInspection,
-} from '../sessions/history.ts'
-import { Notifier } from '../sessions/notifier.ts'
-import { isVisibleAssistantChunk, PartialAccumulator } from '../sessions/partial.ts'
-
-const HISTORY_PAGE_MESSAGES = 50
-
-function isAborted(signal: AbortSignal | undefined): boolean {
-  return signal?.aborted === true
-}
-
-/** Independent raw-history owner used only by inspection consumers. */
-export class SessionHistorySource implements SessionHistoryFace {
-  private entries: HistoryEntry[] = []
-  private inspectionEntries: readonly HistoryEntry[] = []
-  private baseSeq = 0
-  private hasMore = false
-  private state: SessionHistorySnapshot['state'] = 'cold'
-  private error: RpcError | null = null
-  private generation = 0
-  private persistentConsumer = false
-  private readonly consumerSignals = new Set<AbortSignal>()
-  private openPromise: Promise<void> | null = null
-  private olderPromise: Promise<void> | null = null
-  private stitching = false
-  private liveBuffer: HistoryEntry[] = []
-  private subscribedLastSeq: number | null = null
-  private inspectionCache: {
-    entries: readonly HistoryEntry[]
-    value: SessionHistorySnapshot['inspection']
-  } | null = null
-  private streamPublishToken: object | null = null
-  private streamPartial: PartialAccumulator | null = null
-  private snapshotCache: SessionHistorySnapshot
-  private readonly notifier = new Notifier(() => {
-    this.snapshotCache = this.buildSnapshot()
-  })
-
-  /**
-   * @param sessionId - Host session identity.
-   * @param api - Shared wire client.
-   */
-  constructor(
-    readonly sessionId: SessionId,
-    private readonly api: IApiClient,
-  ) {
-    this.snapshotCache = this.buildSnapshot()
-  }
-
-  /**
-   * Subscribe to ledger changes.
-   * @param listener - Change callback.
-   * @returns Unsubscribe function.
-   */
-  subscribe(listener: () => void): () => void {
-    return this.notifier.subscribe(listener)
-  }
-
-  /**
-   * Read the cached ledger snapshot.
-   * @returns Stable snapshot until the source changes.
-   */
-  getSnapshot(): SessionHistorySnapshot {
-    this.notifier.ensureFresh()
-    return this.snapshotCache
-  }
-
-  /**
-   * Load the current tail without reading older pages.
-   * @param signal - Consumer lifetime.
-   * @returns When the tail is ready or loading fails.
-   */
-  async loadTail(signal?: AbortSignal): Promise<void> {
-    if (isAborted(signal)) return
-    this.trackConsumer(signal)
-    await this.open()
-  }
-
-  /**
-   * Prepend one older page when the current window has a predecessor.
-   * @param signal - Consumer lifetime.
-   * @returns Whether the loaded window advanced.
-   */
-  async loadOlder(signal?: AbortSignal): Promise<boolean> {
-    if (isAborted(signal)) return false
-    this.trackConsumer(signal)
-    await this.open()
-    if (isAborted(signal)) return false
-    const previousBaseSeq = this.baseSeq
-    await this.loadOlderPage()
-    return this.baseSeq !== previousBaseSeq
-  }
-
-  /**
-   * Route a relevant mux frame without involving the Chat session.
-   * @param frame - Session-addressed frame.
-   */
-  handleMuxFrame(frame: MuxFrame): void {
-    if (frame.type === 'session/subscribed') {
-      this.subscribedLastSeq = frame.lastSeq
-      return
-    }
-    if (frame.type !== 'session/event') return
-    this.acceptLive({ event: frame.event, ...(frame.view === undefined ? {} : { view: frame.view }) })
-  }
-
-  /** Invalidate dead-generation requests while retaining the last readable snapshot. */
-  handleDisconnected(): void {
-    this.generation++
-    this.openPromise = null
-    this.olderPromise = null
-    this.stitching = false
-    this.liveBuffer = []
-    this.subscribedLastSeq = null
-    if (this.state !== 'cold') {
-      this.state = 'cold'
-      this.error = null
-      this.publishDirtyNow()
-    }
-  }
-
-  /** Rebuild an activated ledger from the new connection generation. */
-  resync(): void {
-    if (!this.hasConsumer()) return
-    this.generation++
-    this.openPromise = null
-    this.olderPromise = null
-    this.stitching = false
-    this.liveBuffer = []
-    this.subscribedLastSeq = null
-    this.entries = []
-    this.inspectionEntries = []
-    this.baseSeq = 0
-    this.hasMore = false
-    this.state = 'cold'
-    this.error = null
-    this.publishDirtyNow()
-    void this.open()
-  }
-
-  /** Stop future refresh work after the host removes the session. */
-  dispose(): void {
-    this.persistentConsumer = false
-    this.consumerSignals.clear()
-    this.generation++
-    this.openPromise = null
-    this.olderPromise = null
-    this.liveBuffer = []
-    this.streamPublishToken = null
-    this.streamPartial = null
-  }
-
-  private open(): Promise<void> {
-    if (this.state === 'ready') return Promise.resolve()
-    if (this.openPromise !== null) return this.openPromise
-    const generation = this.generation
-    const operation = this.doOpen(generation)
-    const settled = operation.finally(() => {
-      if (this.openPromise === settled) this.openPromise = null
-    })
-    this.openPromise = settled
-    return settled
-  }
-
-  private trackConsumer(signal: AbortSignal | undefined): void {
-    if (signal === undefined) {
-      this.persistentConsumer = true
-      return
-    }
-    if (this.consumerSignals.has(signal)) return
-    this.consumerSignals.add(signal)
-    signal.addEventListener('abort', () => {
-      this.consumerSignals.delete(signal)
-    }, { once: true })
-  }
-
-  private hasConsumer(): boolean {
-    return this.persistentConsumer || this.consumerSignals.size > 0
-  }
-
-  private async doOpen(generation: number): Promise<void> {
-    this.state = 'loading'
-    this.error = null
-    this.publishDirtyNow()
-    try {
-      let { result } = await this.api.sessions.history({
-        sessionId: this.sessionId,
-        maxMessages: HISTORY_PAGE_MESSAGES,
-      })
-      if (generation !== this.generation) return
-      if (!result.ok) {
-        this.state = 'error'
-        this.error = result.error
-        return
-      }
-      this.installTail(result.value.events, result.value.hasMore, true)
-      const tailSeq = this.tailSeq()
-      if (
-        this.subscribedLastSeq !== null
-        && tailSeq !== null
-        && this.subscribedLastSeq > tailSeq
-      ) {
-        result = (await this.api.sessions.history({
-          sessionId: this.sessionId,
-          maxMessages: HISTORY_PAGE_MESSAGES,
-        })).result
-        if (generation !== this.generation) return
-        if (result.ok) this.installTail(result.value.events, result.value.hasMore, true)
-      }
-      this.state = 'ready'
-    } catch (error) {
-      if (generation !== this.generation) return
-      this.state = 'error'
-      const folded = transportError<never>(error)
-      /* v8 ignore next -- transportError always returns the error branch. */
-      this.error = folded.ok ? null : folded.error
-    } finally {
-      if (generation === this.generation) this.publishDirtyNow()
-    }
-  }
-
-  private loadOlderPage(): Promise<void> {
-    if (this.olderPromise !== null) return this.olderPromise
-    if (this.state !== 'ready' || !this.hasMore) return Promise.resolve()
-    const generation = this.generation
-    const operation = (async () => {
-      try {
-        const { result } = await this.api.sessions.history({
-          sessionId: this.sessionId,
-          beforeSeq: this.baseSeq,
-          maxMessages: HISTORY_PAGE_MESSAGES,
-        })
-        if (generation !== this.generation || this.state !== 'ready' || !result.ok) return
-        const older = result.value.events
-        if (older.length === 0) {
-          this.hasMore = result.value.hasMore
-          return
-        }
-        const tail = older.at(-1)
-        if (tail === undefined || tail.event.seq + 1 !== this.baseSeq) {
-          console.error(
-            `[web-runtime] inspection history page discontinuous: tail seq ${tail?.event.seq} vs baseSeq ${this.baseSeq}`,
-          )
-          this.hasMore = false
-          return
-        }
-        this.entries = [...older, ...this.entries]
-        this.inspectionEntries = compactHistoryInspectionEntries([...this.entries])
-        this.baseSeq = older[0]?.event.seq ?? this.baseSeq
-        this.hasMore = result.value.hasMore
-      } catch (error) {
-        console.error('[web-runtime] inspection history paging failed:', error)
-      }
-    })()
-    const settled = operation.finally(() => {
-      if (this.olderPromise !== settled) return
-      this.olderPromise = null
-      this.publishDirtyNow()
-    })
-    this.olderPromise = settled
-    return settled
-  }
-
-  private installTail(
-    tail: readonly HistoryEntry[],
-    hasMore: boolean,
-    replace: boolean,
-  ): void {
-    if (replace) {
-      this.entries = [...tail]
-      this.hasMore = hasMore
-    } else {
-      const firstSeq = tail[0]?.event.seq
-      const prefix = firstSeq === undefined
-        ? this.entries
-        : this.entries.filter(entry => entry.event.seq < firstSeq)
-      this.entries = [...prefix, ...tail]
-    }
-    this.baseSeq = this.entries[0]?.event.seq ?? 0
-    this.inspectionEntries = compactHistoryInspectionEntries([...this.entries])
-    const buffered = this.liveBuffer
-    this.liveBuffer = []
-    for (const entry of buffered) this.appendLive(entry)
-    this.publishDirtyNow()
-  }
-
-  private acceptLive(entry: HistoryEntry): void {
-    if (this.state === 'loading' || this.stitching) {
-      this.liveBuffer.push(entry)
-      return
-    }
-    if (this.state !== 'ready') return
-    const tailSeq = this.tailSeq()
-    if (tailSeq !== null && entry.event.seq > tailSeq + 1) {
-      this.liveBuffer.push(entry)
-      void this.repairGap()
-      return
-    }
-    if (
-      entry.event.type === 'assistant/chunk'
-      && entry.event.data.chunk.type !== 'usage'
-    ) {
-      if (!this.appendIncrementalChunk(entry, entry.event)) return
-      this.publishStreamDirty()
-      return
-    }
-    this.appendLive(entry)
-    this.publishDirtyNow()
-  }
-
-  private appendLive(entry: HistoryEntry): void {
-    const tailSeq = this.tailSeq()
-    if (tailSeq !== null && entry.event.seq <= tailSeq) return
-    this.entries.push(entry)
-    this.inspectionEntries = [...this.inspectionEntries, entry]
-    if (entry.event.type === 'assistant/message') {
-      this.inspectionEntries = compactHistoryInspectionEntries(this.inspectionEntries)
-    }
-  }
-
-  /** Append a chunk against the cached finalized projection; false means no visible publish. */
-  private appendIncrementalChunk(
-    entry: HistoryEntry,
-    event: SessionEvent<'assistant/chunk'>,
-  ): boolean {
-    const { turn, step, chunk } = event.data
-    if (!isVisibleAssistantChunk(chunk.type)) {
-      const inspection = this.currentInspection()
-      this.appendLive(entry)
-      this.inspectionCache = { entries: this.inspectionEntries, value: inspection }
-      return false
-    }
-    const base = this.currentInspection()
-    if (
-      this.streamPartial === null
-      || this.streamPartial.turn !== turn
-      || this.streamPartial.step !== step
-    ) {
-      const current = base.partial
-      this.streamPartial = new PartialAccumulator(
-        turn,
-        step,
-        current?.turn === turn && current.step === step ? current.blocks : [],
-      )
-    }
-    this.streamPartial.push(chunk)
-    this.appendLive(entry)
-    this.inspectionCache = {
-      entries: this.inspectionEntries,
-      value: { ...base, partial: this.streamPartial.toPartial() },
-    }
-    return true
-  }
-
-  /** Coalesce token-stream projection and rendering work to one publish per browser frame. */
-  private publishStreamDirty(): void {
-    if (this.streamPublishToken !== null) return
-    const token = {}
-    this.streamPublishToken = token
-    const publish = () => {
-      if (this.streamPublishToken !== token) return
-      this.streamPublishToken = null
-      this.notifier.markDirty()
-    }
-    if (typeof globalThis.requestAnimationFrame === 'function') {
-      globalThis.requestAnimationFrame(publish)
-    } else {
-      queueMicrotask(publish)
-    }
-  }
-
-  /** Publish structural changes immediately and invalidate an older scheduled stream publish. */
-  private publishDirtyNow(): void {
-    this.streamPublishToken = null
-    this.streamPartial = null
-    this.notifier.markDirty()
-  }
-
-  private async repairGap(): Promise<void> {
-    if (this.stitching) return
-    this.stitching = true
-    const generation = this.generation
-    try {
-      const { result } = await this.api.sessions.history({
-        sessionId: this.sessionId,
-        maxMessages: HISTORY_PAGE_MESSAGES,
-      })
-      if (result.ok && generation === this.generation && this.state === 'ready') {
-        this.installTail(result.value.events, result.value.hasMore, false)
-      }
-    } catch (error) {
-      console.error('[web-runtime] inspection history gap repair failed:', error)
-    } finally {
-      if (generation === this.generation) this.stitching = false
-    }
-  }
-
-  private tailSeq(): number | null {
-    return this.entries.at(-1)?.event.seq ?? null
-  }
-
-  private buildSnapshot(): SessionHistorySnapshot {
-    return {
-      state: this.state,
-      error: this.error,
-      hasMore: this.hasMore,
-      baseSeq: this.baseSeq,
-      inspection: this.currentInspection(),
-    }
-  }
-
-  /** Inspection pinned to the source's current immutable entry array. */
-  private currentInspection(): SessionHistorySnapshot['inspection'] {
-    if (this.inspectionCache?.entries !== this.inspectionEntries) {
-      const entries = this.inspectionEntries
-      this.inspectionCache = {
-        entries,
-        value: createHistoryInspection(() => entries),
-      }
-    }
-    return this.inspectionCache.value
-  }
-}
--- a/packages/client/runtime/src/client/sessions/conversation-assembler.ts
+++ b/packages/client/runtime/src/client/sessions/conversation-assembler.ts
@@ -2,7 +2,8 @@ import type {
  ConversationContextReader, ConversationEventInput, ConversationLocationData, ConversationMatch,
  ConversationNodeContext, ConversationNodeDefinition, ConversationPreviousContext,
  ConversationLocationDataScope, ConversationPublication, ConversationViewBuilder,
-  ConversationViewDefinition, ConversationViewNode,
+  ConversationViewDefinition, ConversationViewNode, ConversationViewSnapshotMap,
+  ConversationViewSnapshotStore,
 } from '../contract/conversation.ts'
 import { conversationContextKey } from '../contract/conversation.ts'
 import {
@@ -133,7 +134,7 @@ export interface ConversationViewDefinitions {
 * Session-owned incremental engine that assembles business Contexts from a
 * contiguous Event window and materializes registered view snapshots.
 */
-export class ConversationNodeAssembler {
+export class ConversationNodeAssembler implements ConversationViewSnapshotStore {
  private readonly contexts = new Map<string, InternalContext>()
  private readonly contextsByKind = new Map<string, InternalContext[]>()
  private readonly contextsBySeq = new Map<number, Set<InternalContext>>()
@@ -266,11 +267,11 @@ export class ConversationNodeAssembler {
      const allByTarget = new Map<string, ConversationViewNode[]>()
      for (const target of this.views.keys()) allByTarget.set(target, [])
      for (const context of this.contexts.values()) {
-        for (const target of this.views.keys()) {
-          const node = this.buildNode(context, target)
-          context.current.set(target, node)
-          if (node !== null) allByTarget.get(target)?.push(node)
-        }
+        const target = context.definition.target
+        if (target === undefined || !this.views.has(target)) continue
+        const node = this.buildNode(context, target)
+        context.current.set(target, node)
+        if (node !== null) allByTarget.get(target)?.push(node)
      }
      for (const view of this.views.values()) {
        view.snapshot = view.builder.replace({
@@ -288,17 +289,17 @@ export class ConversationNodeAssembler {
    for (const target of this.views.keys()) upsertsByTarget.set(target, [])
    if (this.applyDirtyLocationData()) this.timelineDirty = true
    for (const context of this.dirty) {
-      for (const target of this.views.keys()) {
-        const previous = context.current.get(target) ?? null
-        const node = this.buildNode(context, target)
-        if (node === null && previous !== null) {
-          throw new Error(
-            `conversation Definition "${context.kind}" withdrew materialized target "${target}"; return the same key with hidden visibility instead`,
-          )
-        }
-        context.current.set(target, node)
-        if (node !== null) upsertsByTarget.get(target)?.push(node)
+      const target = context.definition.target
+      if (target === undefined || !this.views.has(target)) continue
+      const previous = context.current.get(target) ?? null
+      const node = this.buildNode(context, target)
+      if (node === null && previous !== null) {
+        throw new Error(
+          `conversation Definition "${context.kind}" withdrew materialized target "${target}"; return the same key with hidden visibility instead`,
+        )
      }
+      context.current.set(target, node)
+      if (node !== null) upsertsByTarget.get(target)?.push(node)
    }
    this.dirty.clear()
    const timelineDirty = this.timelineDirty
@@ -323,6 +324,12 @@ export class ConversationNodeAssembler {
    return this.views.get(target)?.snapshot
  }

+  get<Target extends Extract<keyof ConversationViewSnapshotMap, string>>(
+    target: Target,
+  ): ConversationViewSnapshotMap[Target] | undefined {
+    return this.snapshot(target) as ConversationViewSnapshotMap[Target] | undefined
+  }
+
  private sortedInputs(): ConversationEventInput[] {
    return [...this.inputs.values()].sort((left, right) => left.event.seq - right.event.seq)
  }
@@ -358,18 +365,19 @@ export class ConversationNodeAssembler {
      role: ConversationMatch['role'],
    ) => ConversationPublication,
  ): ConversationPublication {
-    let matched = false
+    const matchedTargets = new Set<string>()
    let publication: ConversationPublication = 'none'
    for (const definition of this.eventDefinitions.entries()) {
      const result = definition.match(input.event)
      if (result === null) continue
-      matched = true
+      if (definition.target !== undefined) matchedTargets.add(definition.target)
      publication = maximumPublication(publication, accept(definition, result.id, result.role))
    }
-    if (!matched) {
-      const fallback = this.eventDefinitions.fallbackEntry()
-      const result = fallback?.match(input.event) ?? null
-      if (fallback !== undefined && result !== null) {
+    const fallback = this.eventDefinitions.fallbackEntry()
+    const target = fallback?.target
+    if (fallback !== undefined && target !== undefined && !matchedTargets.has(target)) {
+      const result = fallback.match(input.event)
+      if (result !== null) {
        publication = maximumPublication(publication, accept(fallback, result.id, result.role))
      }
    }
@@ -697,7 +705,8 @@ export class ConversationNodeAssembler {
  }

  private buildNode(context: InternalContext, target: string): ConversationViewNode | null {
-    const node = context.definition.buildViewNode(contextSnapshot(context), target)
+    if (context.definition.target !== target || context.definition.buildViewNode === undefined) return null
+    const node = context.definition.buildViewNode(contextSnapshot(context))
    if (node === null) return null
    if (node.key !== context.key) {
      throw new Error(`conversation Definition "${context.kind}" returned unstable key "${node.key}"; expected "${context.key}"`)
--- a/packages/client/runtime/src/client/sessions/conversation.ts
+++ b/packages/client/runtime/src/client/sessions/conversation.ts
@@ -17,7 +17,7 @@ import type {
 import type { PendingInteraction } from './pending.ts'
 import type { ContextProvenanceView, KnownContextForm } from './context-provenance.ts'
 import type {
-  ChatConversationViewNode, ConversationTimelineSnapshot,
+  ChatConversationViewNode, ConversationTimelineSnapshot, ConversationViewSnapshotStore,
 } from '../contract/conversation.ts'
 export type { TodoItem }

@@ -384,6 +384,11 @@ export interface ChatSnapshot {
 const EMPTY_LIST: readonly never[] = []
 const EMPTY_TIMELINE: ConversationTimelineSnapshot = { turnOrder: EMPTY_LIST, turns: new Map() }

+/** Empty target store used by fixtures and Sessions without registered views. */
+export const EMPTY_CONVERSATION_VIEWS: ConversationViewSnapshotStore = {
+  get: () => undefined,
+}
+
 /** Empty Chat target used before a view builder is registered. */
 export const EMPTY_CHAT_SNAPSHOT: ChatSnapshot = {
  order: EMPTY_LIST,
@@ -408,6 +413,8 @@ export const EMPTY_CHAT_SNAPSHOT: ChatSnapshot = {
 /** The immutable snapshot contract Session hands to uSES (see the web client architecture RFC). */
 export interface ConversationSnapshot {
  sessionId: SessionId
+  /** Registered target snapshots assembled from Session events. */
+  views: ConversationViewSnapshotStore
  /** Final Chat target assembled from independently registered business Definitions. */
  chat: ChatSnapshot
  /** Legacy top-level compatibility field mirrored from the registered Chat Definitions. */
--- a/packages/client/runtime/src/client/sessions/history.ts
+++ b/packages/client/runtime/src/client/sessions/history.ts
@@ -1,121 +0,0 @@
-import type { ToolSchema } from '@deepseek-ai/dsh-llm/types'
-import type { HistoryEntry } from '@deepseek-ai/dsh-client-connection/client'
-import type {
-  ConversationNode, PartialAssistant, RunningToolCall,
-} from './conversation.ts'
-import type { ConversationContext } from './conversation-context.ts'
-import { projectConversationHistory } from '../session-history/history-fold.ts'
-import { inspectRequests, type RequestView } from './request-inspection.ts'
-
-function assistantStepKey(turn: number, step: number): string {
-  return `${turn}\u0000${step}`
-}
-
-function isFirstTokenCandidate(entry: HistoryEntry): boolean {
-  const event = entry.event
-  if (event.type !== 'assistant/chunk') return false
-  switch (event.data.chunk.type) {
-    case 'text-delta':
-    case 'reasoning-delta':
-      return event.data.chunk.text !== ''
-    case 'tool-call-delta':
-      return event.data.chunk.argumentsDelta !== '' || event.data.chunk.name !== undefined
-    default:
-      return false
-  }
-}
-
-/** Lazily derived inspection data for one immutable session-history window. */
-export interface SessionHistoryInspection {
-  eventNodes: readonly ConversationNode[]
-  contexts: readonly ConversationContext[]
-  requests: readonly RequestView[]
-  callSchemas: ReadonlyMap<string, ToolSchema>
-  interruptedNodes: readonly ConversationNode[]
-  partial: PartialAssistant | null
-  runningCalls: readonly RunningToolCall[]
-}
-
-/**
- * Remove completed-step token payloads that no inspection projection reads.
- * The first visible token preserves timing, usage chunks preserve accounting,
- * and unfinished steps retain every chunk for live or interrupted content.
- * @param entries - Contiguous raw history entries in sequence order.
- * @returns A projection-equivalent, usually much smaller entry ledger.
- */
-export function compactHistoryInspectionEntries(
-  entries: readonly HistoryEntry[],
-): readonly HistoryEntry[] {
-  const completedSteps = new Set<string>()
-  for (const { event } of entries) {
-    if (event.type === 'assistant/message') {
-      completedSteps.add(assistantStepKey(event.data.turn, event.data.step))
-    }
-  }
-
-  const firstTokenSteps = new Set<string>()
-  const compacted: HistoryEntry[] = []
-  let changed = false
-  for (const entry of entries) {
-    const event = entry.event
-    if (event.type !== 'assistant/chunk') {
-      compacted.push(entry)
-      continue
-    }
-    const key = assistantStepKey(event.data.turn, event.data.step)
-    if (!completedSteps.has(key) || event.data.chunk.type === 'usage') {
-      compacted.push(entry)
-      continue
-    }
-    if (isFirstTokenCandidate(entry) && !firstTokenSteps.has(key)) {
-      firstTokenSteps.add(key)
-      compacted.push(entry)
-    } else {
-      changed = true
-    }
-  }
-  return changed ? compacted : entries
-}
-
-/**
- * Create a lazy inspection projection over an immutable history window.
- * Conversation consumers retain the cheap wrapper; only Trajectory snapshots
- * the entries and replays event order and request lifecycle state.
- * @param loadEntries - Lazily snapshots contiguous raw entries in sequence order.
- * @returns Lazy, memoized inspection fields for that exact window.
- */
-export function createHistoryInspection(
-  loadEntries: () => readonly HistoryEntry[],
-): SessionHistoryInspection {
-  let entries: readonly HistoryEntry[] | undefined
-  let conversation: ReturnType<typeof projectConversationHistory> | undefined
-  let requests: ReturnType<typeof inspectRequests> | undefined
-  const historyEntries = () => entries ??= loadEntries()
-  const conversationProjection = () =>
-    conversation ??= projectConversationHistory(historyEntries())
-  const requestProjection = () =>
-    requests ??= inspectRequests(historyEntries())
-  return {
-    get eventNodes() {
-      return conversationProjection().eventNodes
-    },
-    get contexts() {
-      return conversationProjection().contexts
-    },
-    get interruptedNodes() {
-      return conversationProjection().interruptedNodes
-    },
-    get partial() {
-      return conversationProjection().partial
-    },
-    get runningCalls() {
-      return conversationProjection().runningCalls
-    },
-    get requests() {
-      return requestProjection().requests
-    },
-    get callSchemas() {
-      return requestProjection().callSchemas
-    },
-  }
-}
--- a/packages/client/runtime/src/client/sessions/request-inspection.ts
+++ b/packages/client/runtime/src/client/sessions/request-inspection.ts
@@ -1,17 +1,7 @@
-// Request-centric inspection read model. Ordinary generation and compaction
-// calls share one chronological projection; presentation-specific grouping
-// remains in the trajectory consumer.
-
-import type { ContentBlock, TokenUsage, ToolSchema } from '@deepseek-ai/dsh-llm/types'
-import type { HistoryEntry } from '@deepseek-ai/dsh-client-connection/client'
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import type {} from '@deepseek-ai/dsh-compact/types'
-import type {} from '@deepseek-ai/dsh-llm-retry/types'
-import type {} from '@deepseek-ai/dsh-tools/types'
+import type { ContentBlock, ToolSchema } from '@deepseek-ai/dsh-llm/types'
 import type {
  AssistantProvenanceView, AssistantRequestConfig,
 } from './conversation.ts'
-import { displayFailureMessage } from './failure-display.ts'

 export type {
  AssistantProvenanceView, AssistantRequestConfig,
@@ -54,7 +44,7 @@ interface RequestViewBase {
  resultSeq?: number
 }

-/** One ordinary assistant generation reconstructed from durable request events. */
+/** One ordinary assistant generation assembled from durable request events. */
 interface AssistantRequestView extends RequestViewBase {
  purpose: 'assistant'
  turn: number
@@ -85,321 +75,11 @@ interface CompactionRequestView extends RequestViewBase {
  rawOutput?: readonly ContentBlock[]
 }

-/** One provider request reconstructed from durable request lifecycle events. */
+/** One provider request assembled from durable request lifecycle events. */
 export type RequestView = AssistantRequestView | CompactionRequestView

-/** Immutable request-centric projection derived from one history window. */
+/** Request data consumed by the stage-oriented Trajectory layout. */
 export interface RequestInspectionSnapshot {
  requests: readonly RequestView[]
  callSchemas: ReadonlyMap<string, ToolSchema>
 }
-
-/**
- * Derive the request-centric read model from one immutable history window.
- * Compaction participates as a request purpose rather than a parallel
- * top-level collection. A leading resume/change header exposes its prompt but
- * cannot project a change until the preceding header enters the window.
- * @param entries - Contiguous raw session history.
- * @returns Requests and call-time schemas derived from that history.
- */
-export function inspectRequests(
-  entries: readonly HistoryEntry[],
-): RequestInspectionSnapshot {
-  const events = entries.map(entry => entry.event)
-  return {
-    requests: deriveRequests(events),
-    callSchemas: deriveCallSchemas(events),
-  }
-}
-
-function requestKey(turn: number, step: number): string {
-  return `${turn}\u0000${step}`
-}
-
-function addTokenUsage(current: unknown, next: TokenUsage): TokenUsage {
-  const previous = current as TokenUsage | undefined
-  return {
-    inputTokens: (previous?.inputTokens ?? 0) + next.inputTokens,
-    outputTokens: (previous?.outputTokens ?? 0) + next.outputTokens,
-    ...(previous?.cacheReadTokens === undefined && next.cacheReadTokens === undefined
-      ? {}
-      : {
-        cacheReadTokens:
-          (previous?.cacheReadTokens ?? 0) + (next.cacheReadTokens ?? 0),
-      }),
-    ...(previous?.cacheWriteTokens === undefined && next.cacheWriteTokens === undefined
-      ? {}
-      : {
-        cacheWriteTokens:
-          (previous?.cacheWriteTokens ?? 0) + (next.cacheWriteTokens ?? 0),
-      }),
-    ...(previous?.reasoningTokens === undefined && next.reasoningTokens === undefined
-      ? {}
-      : {
-        reasoningTokens:
-          (previous?.reasoningTokens ?? 0) + (next.reasoningTokens ?? 0),
-      }),
-  }
-}
-
-function deriveCallSchemas(
-  events: readonly SessionEvent[],
-): ReadonlyMap<string, ToolSchema> {
-  let active = new Map<string, ToolSchema>()
-  const calls = new Map<string, ToolSchema>()
-  const capture = (callId: string, name: string): void => {
-    if (calls.has(callId)) return
-    const schema = active.get(name)
-    if (schema !== undefined) calls.set(callId, schema)
-  }
-  for (const event of events) {
-    if (event.type === 'request/header') {
-      const tools: unknown = event.data.header.tools
-      active = new Map(
-        Array.isArray(tools)
-          ? (tools as ToolSchema[]).map(schema => [schema.name, schema])
-          : [],
-      )
-      continue
-    }
-    if (event.type === 'tool/call') {
-      capture(String(event.data.callId), event.data.name)
-      continue
-    }
-    if (event.type === 'tool/code-dispatch-start' || event.type === 'tool/code-dispatch') {
-      capture(String(event.data.subCallId), event.data.name)
-    }
-  }
-  return calls
-}
-
-function promptChange(
-  previous: ConversationPromptSnapshot | undefined,
-  prompt: ConversationPromptSnapshot,
-  event: SessionEvent<'request/header'>,
-): RequestPromptChange | undefined {
-  if (previous === undefined && event.data.reason !== 'initial') return
-  const systemChanged = previous !== undefined && previous.system !== prompt.system
-  const toolsChanged = previous !== undefined
-    && JSON.stringify(previous.tools) !== JSON.stringify(prompt.tools)
-  if (previous !== undefined && !systemChanged && !toolsChanged) return
-  return {
-    seq: event.seq,
-    time: event.time,
-    kind: previous === undefined
-      ? 'initial'
-      : systemChanged && toolsChanged
-        ? 'system-and-tools'
-        : systemChanged
-          ? 'system'
-          : 'tools',
-    ...(previous === undefined ? {} : { previous }),
-  }
-}
-
-/** Project ordinary and compaction provider calls into one chronological request stream. */
-function deriveRequests(events: readonly SessionEvent[]): readonly RequestView[] {
-  const requests: RequestView[] = []
-  const ordinaryByStep = new Map<string, number>()
-  const lastStepByTurn = new Map<number, string>()
-  let activeStep: string | undefined
-  let activePrompt: ConversationPromptSnapshot | undefined
-  let activeCompaction: number | undefined
-
-  const updateAssistant = (
-    index: number | undefined,
-    change: Partial<Omit<AssistantRequestView, 'purpose'>>,
-  ): void => {
-    if (index === undefined) return
-    const request = requests[index]
-    if (request?.purpose === 'assistant') requests[index] = { ...request, ...change }
-  }
-  const updateCompaction = (
-    index: number | undefined,
-    change: Partial<Omit<CompactionRequestView, 'purpose'>>,
-  ): void => {
-    if (index === undefined) return
-    const request = requests[index]
-    if (request?.purpose === 'compaction') requests[index] = { ...request, ...change }
-  }
-
-  for (const sourceEvent of events) {
-    if (sourceEvent.type === 'step/start') {
-      const { turn, step } = sourceEvent.data
-      const key = requestKey(turn, step)
-      ordinaryByStep.set(key, requests.length)
-      lastStepByTurn.set(turn, key)
-      requests.push({
-        purpose: 'assistant',
-        startSeq: sourceEvent.seq,
-        turn,
-        step,
-        startedAt: sourceEvent.time,
-        completedAt: null,
-        status: 'running',
-        ...(activePrompt === undefined
-          ? {}
-          : { prompt: activePrompt, requestConfig: activePrompt.config }),
-      })
-      activeStep = key
-      continue
-    }
-    if (sourceEvent.type === 'request/header') {
-      const tools: unknown = sourceEvent.data.header.tools
-      const prompt: ConversationPromptSnapshot = {
-        config: sourceEvent.data.header.config,
-        system: sourceEvent.data.header.system ?? '',
-        tools: Array.isArray(tools) ? tools as ToolSchema[] : [],
-      }
-      const change = promptChange(activePrompt, prompt, sourceEvent)
-      activePrompt = prompt
-      updateAssistant(activeStep === undefined ? undefined : ordinaryByStep.get(activeStep), {
-        prompt,
-        requestConfig: prompt.config,
-        ...(change === undefined ? {} : { promptChange: change }),
-      })
-      continue
-    }
-    if (
-      sourceEvent.type === 'assistant/chunk'
-      && sourceEvent.data.chunk.type === 'usage'
-    ) {
-      const index = ordinaryByStep.get(
-        requestKey(sourceEvent.data.turn, sourceEvent.data.step),
-      )
-      const request = index === undefined ? undefined : requests[index]
-      updateAssistant(index, {
-        usage: addTokenUsage(
-          request?.purpose === 'assistant' ? request.usage : undefined,
-          sourceEvent.data.chunk.usage,
-        ),
-      })
-      continue
-    }
-    if (sourceEvent.type === 'assistant/message') {
-      const index = ordinaryByStep.get(
-        requestKey(sourceEvent.data.turn, sourceEvent.data.step),
-      )
-      const request = index === undefined ? undefined : requests[index]
-      updateAssistant(index, {
-        completedAt: sourceEvent.time,
-        status: 'complete',
-        resultSeq: sourceEvent.seq,
-        provenance: {
-          provider: sourceEvent.data.message.source.provider,
-          model: sourceEvent.data.message.source.model,
-        },
-        ...(request?.purpose === 'assistant'
-          && request.usage !== undefined
-          || sourceEvent.data.usage === undefined
-          ? {}
-          : { usage: sourceEvent.data.usage }),
-      })
-      continue
-    }
-    if (sourceEvent.type === 'step/end') {
-      const key = requestKey(sourceEvent.data.turn, sourceEvent.data.step)
-      const index = ordinaryByStep.get(key)
-      const request = index === undefined ? undefined : requests[index]
-      if (request?.purpose === 'assistant' && request.status === 'running') {
-        updateAssistant(index, {
-          completedAt: sourceEvent.time,
-          status: 'error',
-        })
-      }
-      if (activeStep === key) activeStep = undefined
-      continue
-    }
-    if (sourceEvent.type === 'llm/retry') {
-      const data = sourceEvent.data
-      updateAssistant(ordinaryByStep.get(requestKey(data.turn, data.step)), {
-        status: 'error',
-        error: displayFailureMessage(data.failure),
-        retry: data.retry,
-        ...data.mode === 'normal' ? { maxRetries: data.maxRetries } : {},
-        retryDelayMs: data.delayMs,
-      })
-      continue
-    }
-    if (sourceEvent.type === 'turn/end') {
-      const lastStep = lastStepByTurn.get(sourceEvent.data.turn)
-      if (sourceEvent.data.reason.kind === 'error') {
-        updateAssistant(lastStep === undefined ? undefined : ordinaryByStep.get(lastStep), {
-          status: 'error',
-          error: displayFailureMessage(sourceEvent.data.reason.error),
-        })
-      }
-      lastStepByTurn.delete(sourceEvent.data.turn)
-      continue
-    }
-
-    if (sourceEvent.type === 'session/end-seed' && activeCompaction !== undefined) {
-      updateCompaction(activeCompaction, {
-        completedAt: sourceEvent.time,
-        status: 'error',
-        error: 'Compaction was interrupted before completion.',
-      })
-      activeCompaction = undefined
-      continue
-    }
-    if (sourceEvent.type === 'compact/start') {
-      activeCompaction = requests.length
-      requests.push({
-        purpose: 'compaction',
-        startSeq: sourceEvent.seq,
-        turn: sourceEvent.data.turn,
-        step: 0,
-        startedAt: sourceEvent.time,
-        completedAt: null,
-        status: 'running',
-      })
-      continue
-    }
-    if (sourceEvent.type === 'compact/summary' && activeCompaction !== undefined) {
-      const data = sourceEvent.data
-      updateCompaction(activeCompaction, {
-        resultSeq: sourceEvent.seq,
-        summary: data.summary,
-        ...(data.rawOutput === undefined ? {} : { rawOutput: data.rawOutput }),
-        provenance: {
-          provider: data.provider,
-          model: data.model,
-        },
-        requestConfig: {
-          provider: data.provider,
-          model: data.model,
-          purpose: 'compaction',
-          ...(data.maxTokens === undefined ? {} : { maxTokens: data.maxTokens }),
-        },
-        ...(data.usage === undefined ? {} : { usage: data.usage }),
-      })
-      continue
-    }
-    if (
-      sourceEvent.type === 'user/message'
-      && activeCompaction !== undefined
-      && isCompactionSource(sourceEvent.data.source)
-    ) {
-      updateCompaction(activeCompaction, { replacementSeq: sourceEvent.seq })
-      continue
-    }
-    if (sourceEvent.type !== 'compact/end' || activeCompaction === undefined) continue
-    updateCompaction(activeCompaction, {
-      completedAt: sourceEvent.time,
-      status: sourceEvent.data.error === undefined ? 'complete' : 'error',
-      ...(sourceEvent.data.error === undefined ? {} : { error: sourceEvent.data.error }),
-    })
-    activeCompaction = undefined
-  }
-
-  return requests.sort((left, right) => left.startSeq - right.startSeq)
-}
-
-function isCompactionSource(source: unknown): boolean {
-  return typeof source === 'object'
-    && source !== null
-    && 'kind' in source
-    && source.kind === 'plugin'
-    && 'plugin' in source
-    && source.plugin === 'compact'
-}
--- a/packages/client/runtime/src/client/sessions/service.ts
+++ b/packages/client/runtime/src/client/sessions/service.ts
@@ -14,7 +14,7 @@
 * tears its scope down immediately unless it is the staged one, whose scope
 * survives frozen (read-only view) until the stage moves on.
 */
-import type { Context, Fiber } from 'cordis'
+import type { Context, Fiber } from '@deepseek-ai/cordis'
 import type {
  IApiClient, RpcError, RpcResult, SessionId, SubagentAddress, WorkspaceId,
 } from '@deepseek-ai/dsh-client-connection/client'
--- a/packages/client/runtime/src/client/sessions/session.ts
+++ b/packages/client/runtime/src/client/sessions/session.ts
@@ -1,6 +1,6 @@
 // Sessions remain resident after creation so they continue consuming mux frames off-screen.

-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { AttachmentIdType, ImageAttachmentRef } from '@deepseek-ai/dsh-attachment'
 import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
 import type {
@@ -727,6 +727,7 @@ export class Session implements SessionFace {
    const legacy = chat.legacy
    return {
      sessionId: this.sessionId,
+      views: this.conversation,
      chat,
      nodes: legacy.nodes,
      turnTimings: legacy.turnTimings,
--- a/packages/client/runtime/src/client/settings-scope.ts
+++ b/packages/client/runtime/src/client/settings-scope.ts
@@ -1,6 +1,6 @@
 /** Host-backed settings-namespace synchronization for browser plugins. */

-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type {
  ConnectionHandle, IApiClient, SettingsNamespaceView,
 } from '@deepseek-ai/dsh-client-connection/client'
--- a/packages/client/runtime/src/client/slots.ts
+++ b/packages/client/runtime/src/client/slots.ts
@@ -14,8 +14,8 @@
 * holds this package's 'root' row in this compilation unit, but consumers
 * merge keys in; the rule fires on the narrow-map view, not on real
 * redundancy. */
-import { Service } from 'cordis'
-import type { Context } from 'cordis'
+import { Service } from '@deepseek-ai/cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import { SlotCore } from '@deepseek-ai/dsh-client-ui-slots'
 import type {
  LocaleFace, OwnerOf, SlotEntryDef, SlotMap, SlotRenderer, SlotRendererHost,
--- a/packages/client/runtime/src/client/workspaces/service.ts
+++ b/packages/client/runtime/src/client/workspaces/service.ts
@@ -1,6 +1,6 @@
 /** WorkspacesService projects the Workspace object manager for UI consumers. */

-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type {
  DirectoryListing, IApiClient, RpcError,
  SessionId, WorkspaceId, WorkspaceView,
--- a/packages/client/runtime/src/invariant.ts
+++ b/packages/client/runtime/src/invariant.ts
@@ -8,7 +8,7 @@
 * `keyof SlotMap & string` is the declare-merge key pattern: SlotMap is empty
 * in this compilation unit (intersection reads `never`) but consumers merge
 * keys in; the rule fires on the empty-map view, not on real redundancy. */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { SlotMap } from '@deepseek-ai/dsh-client-ui-slots'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

--- a/packages/client/runtime/tests/client-apply.spec.ts
+++ b/packages/client/runtime/tests/client-apply.spec.ts
@@ -3,7 +3,7 @@
 * connection handle, stream-loop sink wiring into the object layer, and the
 * fiber-scoped loop teardown.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import type { ConnectionHandle } from '@deepseek-ai/dsh-client-connection/client'
 import type { ConnectionSinks } from '@deepseek-ai/dsh-client-connection/client'
@@ -126,6 +126,7 @@ describe('runtime client apply', () => {
    const rebuild = vi.spyOn(Session.prototype, 'rebuildConversationRegistry')
    const definition: ConversationNodeDefinition<null> = {
      kind: 'registry-probe',
+      target: 'chat',
      match: () => null,
      start: () => null,
      update: context => context.state,
--- a/packages/client/runtime/tests/conversation-assembler.spec.ts
+++ b/packages/client/runtime/tests/conversation-assembler.spec.ts
@@ -30,10 +30,16 @@ interface TestSnapshot {
 }

 class TestEventDefinitions {
+  readonly definitions: readonly ConversationNodeDefinition[]
+  readonly fallback: ConversationNodeDefinition | undefined
+
  constructor(
-    readonly definitions: readonly ConversationNodeDefinition[],
-    readonly fallback?: ConversationNodeDefinition,
-  ) {}
+    definitions: readonly ConversationNodeDefinition[],
+    fallback?: ConversationNodeDefinition,
+  ) {
+    this.definitions = definitions
+    this.fallback = fallback
+  }

  entries(): readonly ConversationNodeDefinition[] {
    return this.definitions
@@ -93,7 +99,10 @@ function chatSnapshot(assembler: ConversationNodeAssembler): TestSnapshot | unde
  return assembler.snapshot('chat') as TestSnapshot | undefined
 }

-function node(context: Parameters<ConversationNodeDefinition['buildViewNode']>[0], data: unknown): ConversationViewNode {
+function node(
+  context: Parameters<NonNullable<ConversationNodeDefinition['buildViewNode']>>[0],
+  data: unknown,
+): ConversationViewNode {
  return {
    key: context.key,
    kind: context.kind,
@@ -103,6 +112,17 @@ function node(context: Parameters<ConversationNodeDefinition['buildViewNode']>[0
  }
 }

+function fallbackDefinition(start: () => string): ConversationNodeDefinition<string> {
+  return {
+    kind: 'fallback',
+    target: 'chat',
+    match: event => ({ id: String(event.seq), role: 'start' }),
+    start,
+    update: context => context.state,
+    buildViewNode: context => node(context, context.state),
+  }
+}
+
 describe('ConversationNodeAssembler', () => {
  it('appends through an exact business-id Context without replaying unrelated Contexts', () => {
    const starts = vi.fn((
@@ -122,6 +142,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: starts,
      update: updates,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -173,6 +194,7 @@ describe('ConversationNodeAssembler', () => {
        matchCollections.add(context.matches)
        return updates(context)
      },
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -208,6 +230,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: starts,
      update: updates,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -247,6 +270,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => ({ settled: false }),
      update: updates,
+      target: 'chat',
      buildViewNode: context => node(context, context.state ?? { pendingStart: true }),
    }
    const assembler = new ConversationNodeAssembler(
@@ -280,6 +304,7 @@ describe('ConversationNodeAssembler', () => {
        : event.type === 'turn/start' ? { id: 'one', role: 'update' } : null,
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const assembler = new ConversationNodeAssembler(
@@ -301,6 +326,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: (_context, match) => Number((match.event.data as { value?: unknown }).value ?? 0),
      update: context => context.state,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const consumerStart = vi.fn((
@@ -315,6 +341,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: consumerStart,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -344,6 +371,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: (_context, match) => match.event.seq,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const consumer: ConversationNodeDefinition<number> = {
@@ -353,6 +381,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: (_context, _match, reader) => reader.previous<number>('source')?.state ?? -1,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -397,6 +426,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: consumerStart,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -425,6 +455,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => 1,
      update: (_context, match) => (match.event.data as unknown as { value: number }).value,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const consumerStart = vi.fn((
@@ -439,6 +470,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: consumerStart,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -468,6 +500,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => 1,
      update: (_context, match) => (match.event.data as unknown as { value: number }).value,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const sourceX: ConversationNodeDefinition<number> = {
@@ -479,6 +512,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => 10,
      update: (_context, match) => (match.event.data as unknown as { value: number }).value,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const middle: ConversationNodeDefinition<number> = {
@@ -491,6 +525,7 @@ describe('ConversationNodeAssembler', () => {
        + (reader.previous<number>('diamond-x')?.state ?? 0)
      ),
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const consumer: ConversationNodeDefinition<number> = {
@@ -503,6 +538,7 @@ describe('ConversationNodeAssembler', () => {
        + (reader.previous<number>('diamond-b')?.state ?? 0)
      ),
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -538,6 +574,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: starts,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -609,6 +646,7 @@ describe('ConversationNodeAssembler', () => {
          value: { valueSeenFromStep: stepValue ?? -1 },
        }
      },
+      target: 'chat',
      buildViewNode: (context) => {
        const location = context.start?.location
        if (location?.kind !== 'step') return null
@@ -646,6 +684,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.start?.location.kind === 'turn'
        ? context.start.location.turn.steps.length
        : -1),
@@ -701,6 +740,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: (context) => {
        const location = context.start?.location
        const data = location?.kind === 'step'
@@ -734,6 +774,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.start?.location.kind),
    }
    const assembler = new ConversationNodeAssembler(
@@ -760,6 +801,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: (context) => {
        const location = context.start?.location
        return node(context, location?.kind === 'step'
@@ -792,6 +834,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: () => null,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: (context) => {
        const location = context.start?.location
        return node(context, location?.kind === 'step'
@@ -826,6 +869,7 @@ describe('ConversationNodeAssembler', () => {
        : null,
      start: seen,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
@@ -841,24 +885,64 @@ describe('ConversationNodeAssembler', () => {
    expect(seen).toHaveBeenCalledTimes(2)
  })

-  it('does not invoke the fallback when an ordinary non-rendering Definition claims an event', () => {
+  it('invokes the fallback when only a State-only Definition claims an event', () => {
+    const fallbackStart = vi.fn(() => 'fallback')
+    const claimed: ConversationNodeDefinition<null> = {
+      kind: 'claimed-state',
+      match: event => (event.type as string) === 'command/run'
+        ? { id: 'claimed', role: 'start' }
+        : null,
+      start: () => null,
+      update: context => context.state,
+    }
+    const assembler = new ConversationNodeAssembler(
+      new TestEventDefinitions([claimed], fallbackDefinition(fallbackStart)),
+      new TestViewDefinitions([testView()]),
+    )
+
+    assembler.replaceWindow([input(at(1, 'command/run', { commandId: 'one', name: 'x' }))], false)
+    assembler.flush()
+
+    expect(fallbackStart).toHaveBeenCalledOnce()
+    expect(chatSnapshot(assembler)?.order).toHaveLength(1)
+  })
+
+  it('invokes the fallback when only another target claims an event', () => {
+    const fallbackStart = vi.fn(() => 'fallback')
+    const claimed: ConversationNodeDefinition<null> = {
+      kind: 'claimed-trajectory',
+      target: 'trajectory',
+      match: event => (event.type as string) === 'command/run'
+        ? { id: 'claimed', role: 'start' }
+        : null,
+      start: () => null,
+      update: context => context.state,
+      buildViewNode: () => null,
+    }
+    const assembler = new ConversationNodeAssembler(
+      new TestEventDefinitions([claimed], fallbackDefinition(fallbackStart)),
+      new TestViewDefinitions([testView()]),
+    )
+
+    assembler.replaceWindow([input(at(1, 'command/run', { commandId: 'one', name: 'x' }))], false)
+    assembler.flush()
+
+    expect(fallbackStart).toHaveBeenCalledOnce()
+    expect(chatSnapshot(assembler)?.order).toHaveLength(1)
+  })
+
+  it('suppresses the fallback when the same target claims an event', () => {
    const fallbackStart = vi.fn(() => 'fallback')
    const claimed: ConversationNodeDefinition<null> = {
      kind: 'claimed',
+      target: 'chat',
      match: event => (event.type as string) === 'command/run' ? { id: 'claimed', role: 'start' } : null,
      start: () => null,
      update: context => context.state,
      buildViewNode: () => null,
    }
-    const fallback: ConversationNodeDefinition<string> = {
-      kind: 'fallback',
-      match: event => ({ id: String(event.seq), role: 'start' }),
-      start: fallbackStart,
-      update: context => context.state,
-      buildViewNode: context => node(context, context.state),
-    }
    const assembler = new ConversationNodeAssembler(
-      new TestEventDefinitions([claimed], fallback),
+      new TestEventDefinitions([claimed], fallbackDefinition(fallbackStart)),
      new TestViewDefinitions([testView()]),
    )
    assembler.replaceWindow([input(at(1, 'command/run', { commandId: 'one', name: 'x' }))], false)
@@ -878,6 +962,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => true,
      update: () => false,
+      target: 'chat',
      buildViewNode: context => context.state === true ? node(context, true) : null,
    }
    const assembler = new ConversationNodeAssembler(
@@ -900,6 +985,7 @@ describe('ConversationNodeAssembler', () => {
      match: event => (event.type as string) === 'command/run' ? { id: 'one', role: 'start' } : null,
      start: () => undefined,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: () => null,
    }
    const startAssembler = new ConversationNodeAssembler(
@@ -919,6 +1005,7 @@ describe('ConversationNodeAssembler', () => {
      },
      start: () => true,
      update: () => undefined as never,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const updateAssembler = new ConversationNodeAssembler(
@@ -939,6 +1026,7 @@ describe('ConversationNodeAssembler', () => {
      match: event => (event.type as string) === 'command/run' ? { id: 'one', role: 'start' } : null,
      start: (_context, match) => match.event.seq,
      update: context => context.state,
+      target: 'chat',
      buildViewNode: context => node(context, context.state),
    }
    const assembler = new ConversationNodeAssembler(
--- a/packages/client/runtime/tests/conversation-registry.spec.ts
+++ b/packages/client/runtime/tests/conversation-registry.spec.ts
@@ -1,4 +1,4 @@
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import { ConversationEventRegistry } from '../src/client/conversation/event-registry.ts'
@@ -13,6 +13,7 @@ import { FakeApiClient, ok } from './fake-api.ts'
 function eventDefinition(kind: string): ConversationNodeDefinition<null> {
  return {
    kind,
+    target: 'chat',
    match: () => null,
    start: () => null,
    update: context => context.state,
@@ -71,6 +72,40 @@ describe('Conversation registries', () => {
    expect(events.fallbackEntry()).toBeUndefined()
  })

+  it('rejects rendering Definitions that omit either target or builder', async () => {
+    const { events } = await bootRegistries()
+    const targetOnly: ConversationNodeDefinition<null> = {
+      kind: 'target-only',
+      target: 'chat',
+      match: () => null,
+      start: () => null,
+      update: context => context.state,
+    }
+    const builderOnly: ConversationNodeDefinition<null> = {
+      kind: 'builder-only',
+      match: () => null,
+      start: () => null,
+      update: context => context.state,
+      buildViewNode: () => null,
+    }
+
+    expect(() => events.register(targetOnly)).toThrow(/target and buildViewNode together/)
+    expect(() => events.register(builderOnly)).toThrow(/target and buildViewNode together/)
+  })
+
+  it('rejects a State-only Definition as the unmatched-event fallback', async () => {
+    const { events } = await bootRegistries()
+    const fallback: ConversationNodeDefinition<null> = {
+      kind: 'state-only-fallback',
+      match: () => null,
+      start: () => null,
+      update: context => context.state,
+    }
+
+    expect(() => events.registerFallback(fallback))
+      .toThrow('conversation fallback Definition must declare a target')
+  })
+
  it('rejects duplicate view targets and disposes a view registration once', async () => {
    const { views } = await bootRegistries()
    const definition = viewDefinition('chat')
--- a/packages/client/runtime/tests/history-fold.spec.ts
+++ b/packages/client/runtime/tests/history-fold.spec.ts
@@ -1,232 +0,0 @@
-import { createMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import { describe, expect, it } from 'vitest'
-import { projectConversationHistory } from '../src/client/session-history/history-fold.ts'
-import { compactHistoryInspectionEntries } from '../src/client/sessions/history.ts'
-import { inspectRequests } from '../src/client/sessions/request-inspection.ts'
-import { ev } from './event-script.ts'
-
-const at = (seq: number, event: Record<string, unknown>): SessionEvent =>
-  ({ seq, time: 1_700_000_000_000 + seq, ...event }) as unknown as SessionEvent
-
-describe('projectConversationHistory', () => {
-  it('names an injected context node from its durable source, like the live adapter', () => {
-    // The fold declares its own node mapping (jscpd:ignore in the source), so
-    // the source projection is pinned on both sides independently.
-    const injected = at(0, {
-      type: 'user/message',
-      surfaceOp: 'append',
-      data: createUserMessage({
-        content: [{ type: 'text', text: '<available_skills>…</available_skills>' }],
-        // A plugin source, because the client program does not see the host
-        // packages that merge richer source kinds; those arms are pinned in
-        // context-provenance.spec.ts.
-        source: { kind: 'plugin', plugin: 'dsh-tool-skill', form: 'catalog' },
-      }),
-    })
-    const { contexts } = projectConversationHistory([{ event: injected }])
-    expect(contexts[contexts.length - 1]?.nodes).toMatchObject([{
-      kind: 'context',
-      seq: 0,
-      provenance: { role: 'inject', label: 'dsh-tool-skill' },
-      form: 'catalog',
-    }])
-  })
-
-  it('projects next-step human input as durable steering', () => {
-    const steering = createUserMessage({
-      content: [{ type: 'text', text: 'change course' }],
-      source: { kind: 'user' },
-    })
-    const events = [
-      at(0, { type: 'agent/inbox/spliced', data: {
-        target: 'next-step', start: 0, inserted: [steering],
-      } }),
-      at(1, { type: 'agent/inbox/spliced', data: {
-        target: 'next-step', start: 0, removedCount: 1, inserted: [],
-      } }),
-      at(2, { type: 'user/message', surfaceOp: 'append', data: steering }),
-    ]
-    const projection = projectConversationHistory(events.map(event => ({ event })))
-    expect(projection.eventNodes).toMatchObject([{
-      kind: 'steering', messageId: steering.id, seq: 2,
-    }])
-  })
-
-  it('projects a high-sequence history window without synthesizing its unloaded prefix', () => {
-    const baseSeq = 400_000
-    const events = [
-      ev.user(baseSeq, 'loaded tail'),
-      at(baseSeq + 1, {
-        type: 'assistant/message',
-        surfaceOp: { op: 'replace', start: baseSeq, end: baseSeq },
-        sourceEventSeqs: [baseSeq],
-        data: {
-          turn: 80,
-          step: 1,
-          message: createMessage({
-            role: 'assistant',
-            content: [{ type: 'text', text: 'tail summary' }],
-            source: { kind: 'model', provider: 'fake', model: 'fake' },
-          }),
-        },
-      }),
-    ]
-
-    const projection = projectConversationHistory(events.map(event => ({ event })))
-    expect(projection.eventNodes.map(node => node.seq)).toEqual([baseSeq, baseSeq + 1])
-    expect(projection.contexts.map(context => ({
-      originSeq: context.originSeq,
-      nodes: context.nodes.map(node => node.seq),
-    }))).toEqual([
-      { originSeq: undefined, nodes: [baseSeq] },
-      { originSeq: baseSeq + 1, nodes: [baseSeq + 1] },
-    ])
-  })
-
-  it('projects frozen surface generations without widening the core live surface', () => {
-    const events = [
-      ev.user(0, 'a'),
-      ev.user(1, 'b'),
-      at(2, {
-        type: 'assistant/message',
-        surfaceOp: { op: 'replace', start: 0, end: 0 },
-        sourceEventSeqs: [0],
-        data: {
-          turn: 1,
-          step: 1,
-          message: createMessage({
-            role: 'assistant',
-            content: [{ type: 'text', text: 'summary' }],
-            source: { kind: 'model', provider: 'fake', model: 'fake' },
-          }),
-        },
-      }),
-      at(3, {
-        type: 'assistant/message',
-        surfaceOp: { op: 'replace', start: 2, end: 1 },
-        sourceEventSeqs: [2, 1],
-        data: {
-          turn: 1,
-          step: 2,
-          message: createMessage({
-            role: 'assistant',
-            content: [{ type: 'text', text: 'summary 2' }],
-            source: { kind: 'model', provider: 'fake', model: 'fake' },
-          }),
-        },
-      }),
-    ]
-
-    expect(projectConversationHistory(events.map(event => ({ event }))).contexts.map(context => ({
-      id: context.id,
-      parentId: context.parentId,
-      originSeq: context.originSeq,
-      nodes: context.nodes.map(node => node.seq),
-    }))).toEqual([
-      { id: 0, parentId: undefined, originSeq: undefined, nodes: [0, 1] },
-      { id: 1, parentId: 0, originSeq: 2, nodes: [2, 1] },
-      { id: 2, parentId: 1, originSeq: 3, nodes: [3] },
-    ])
-  })
-
-  it('projects assistant timing and the active request header from history', () => {
-    const projection = projectConversationHistory([
-      ev.stepStart(0, 1, 2),
-      at(1, { type: 'request/header', data: {
-        reason: 'initial',
-        header: {
-          config: { provider: 'fake', model: 'first' },
-          tools: [],
-        },
-      } }),
-      ev.chunkStart(2, 1, 2),
-      ev.chunkText(3, 1, 'token', 2),
-      ev.assistant(4, 1, 'done', 2),
-      ev.stepStart(5, 2, 1),
-      ev.chunkText(6, 2, 'next', 1),
-      ev.assistant(7, 2, 'next done', 1),
-    ].map(event => ({ event })))
-
-    expect(projection.eventNodes[0]).toMatchObject({
-      kind: 'assistant',
-      timing: {
-        stepStartTime: 1_700_000_000_000,
-        firstTokenTime: 1_700_000_000_003,
-        completedTime: 1_700_000_000_004,
-      },
-      requestConfig: { provider: 'fake', model: 'first' },
-    })
-
-    expect(projection.eventNodes.at(-1)).toMatchObject({
-      timing: {
-        stepStartTime: 1_700_000_000_005,
-        firstTokenTime: 1_700_000_000_006,
-        completedTime: 1_700_000_000_007,
-      },
-      requestConfig: { provider: 'fake', model: 'first' },
-    })
-  })
-
-  it('projects nested dispatches onto settled and interrupted history calls', () => {
-    const projection = projectConversationHistory([
-      ev.turnStart(0, 1),
-      ev.toolCall(1, 1, 'settled', 'run_code', '{}'),
-      ev.codeDispatchStart(2, 'settled', 1, 'run_code', { code: 'nested' }),
-      ev.codeDispatchStart(3, 'settled:code:1', 1, 'read', { path: 'a.txt' }),
-      ev.codeDispatch(4, 'settled:code:1', 1, 'read', { path: 'a.txt' }, 'alpha'),
-      ev.codeDispatch(5, 'settled', 1, 'run_code', { code: 'nested' }, 'alpha'),
-      ev.toolResult(6, 1, 'settled', 'done'),
-      ev.turnEnd(7, 1),
-      ev.turnStart(8, 2),
-      ev.toolCall(9, 2, 'interrupted', 'run_code', '{}'),
-      ev.codeDispatchStart(10, 'interrupted', 1, 'bash', { command: 'sleep 1' }),
-      ev.turnEnd(11, 2, 'aborted'),
-    ].map(event => ({ event })))
-
-    const settled = {
-      callId: 'settled',
-      subCalls: [{
-        callId: 'settled:code:1',
-        subCalls: [{ callId: 'settled:code:1:code:1', call: { name: 'read' } }],
-      }],
-    }
-    expect(projection.eventNodes).toMatchObject([settled])
-    expect(projection.contexts[0]?.nodes).toMatchObject([settled])
-    expect(projection.interruptedNodes).toMatchObject([{
-      callId: 'interrupted',
-      subCalls: [{ callId: 'interrupted:code:1', name: 'bash' }],
-    }])
-  })
-
-  it('drops completed token payloads without changing inspection projections', () => {
-    const events = [
-      ev.user(0, 'before'),
-      ev.stepStart(1, 1, 0),
-      ev.chunkStart(2, 1),
-      ev.chunkText(3, 1, ''),
-      ev.chunkText(4, 1, 'first'),
-      ev.chunkText(5, 1, ' discarded'),
-      at(6, { type: 'assistant/chunk', data: {
-        turn: 1,
-        step: 0,
-        chunk: { type: 'usage', usage: { inputTokens: 4, outputTokens: 2 } },
-      } }),
-      ev.assistant(7, 1, 'first discarded'),
-      ev.compactSummary(8, 'summary', 0, 7),
-      ev.compactCheckpoint(9, 8, 0, 7),
-      ev.stepStart(10, 2, 0),
-      ev.chunkStart(11, 2),
-      ev.chunkText(12, 2, 'interrupted'),
-      ev.turnEnd(13, 2, 'aborted'),
-    ]
-    const raw = events.map(event => ({ event }))
-    const compacted = compactHistoryInspectionEntries(raw)
-
-    expect(compacted.map(entry => entry.event.seq)).toEqual([
-      0, 1, 4, 6, 7, 8, 9, 10, 11, 12, 13,
-    ])
-    expect(projectConversationHistory(compacted)).toEqual(projectConversationHistory(raw))
-    expect(inspectRequests(compacted)).toEqual(inspectRequests(raw))
-  })
-})
--- a/packages/client/runtime/tests/invariant.spec.ts
+++ b/packages/client/runtime/tests/invariant.spec.ts
@@ -3,7 +3,7 @@
 * a fired key must already carry a bumped version (emission follows the
 * applied mutation), bogus payloads fail loud, foreign events pass.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import InvariantService from '@deepseek-ai/dsh-invariants'
 import * as RuntimeInvariant from '../src/invariant.ts'
--- a/packages/client/runtime/tests/node-half.spec.ts
+++ b/packages/client/runtime/tests/node-half.spec.ts
@@ -1,4 +1,4 @@
-/** Node half: the empty host apply (Loader governance + dshClient discovery placeholder). */
+/** Node half: the empty host apply (Loader governance + dsh.client discovery placeholder). */
 import { describe, expect, it } from 'vitest'
 import { apply } from '../src/index.ts'

--- a/packages/client/runtime/tests/request-inspection.spec.ts
+++ b/packages/client/runtime/tests/request-inspection.spec.ts
@@ -1,319 +0,0 @@
-import { describe, expect, it } from 'vitest'
-import type { HistoryEntry } from '@deepseek-ai/dsh-client-connection/client'
-import { createAssistantMessage, createUserMessage } from '@deepseek-ai/dsh-llm'
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import { inspectRequests } from '../src/client/sessions/request-inspection.ts'
-
-const at = (seq: number, type: string, data: unknown): SessionEvent =>
-  ({ seq, time: 1_700_000_000_000 + seq, type, data }) as SessionEvent
-
-const entriesOf = (events: readonly SessionEvent[]): HistoryEntry[] =>
-  events.map(event => ({ event }))
-
-describe('inspectRequests', () => {
-  it('projects ordinary and compaction calls into one chronological request stream', () => {
-    const events = [
-      at(0, 'step/start', { turn: 1, step: 1 }),
-      at(1, 'request/header', {
-        reason: 'initial',
-        header: {
-          config: { provider: 'fake', model: 'model' },
-          system: 'system',
-          tools: [{
-            name: 'read',
-            description: 'Read a file.',
-            parameters: { type: 'object' },
-          }],
-        },
-      }),
-      at(2, 'tool/call', {
-        turn: 1,
-        step: 1,
-        callId: 'call-1',
-        name: 'read',
-        arguments: '{}',
-      }),
-      at(3, 'assistant/message', {
-        turn: 1,
-        step: 1,
-        message: createAssistantMessage({
-          content: [{ type: 'text', text: 'done' }],
-          source: { provider: 'fake', model: 'model' },
-        }),
-        usage: { inputTokens: 5, outputTokens: 2 },
-      }),
-      at(4, 'step/end', { turn: 1, step: 1 }),
-      at(5, 'compact/start', { turn: 1 }),
-      at(6, 'compact/summary', {
-        summary: [{ type: 'text', text: 'summary' }],
-        rawOutput: [
-          { type: 'reasoning', text: 'thought' },
-          { type: 'text', text: 'summary' },
-        ],
-        provider: 'fake',
-        model: 'compact-model',
-        usage: { inputTokens: 8, outputTokens: 3 },
-      }),
-      at(7, 'user/message', createUserMessage({
-        content: [{ type: 'text', text: 'checkpoint' }],
-        source: { kind: 'plugin', plugin: 'compact' },
-      })),
-      at(8, 'compact/end', { turn: 1 }),
-    ]
-    const snapshot = inspectRequests(entriesOf(events))
-    expect(snapshot.requests).toMatchObject([
-      {
-        purpose: 'assistant',
-        startSeq: 0,
-        resultSeq: 3,
-        status: 'complete',
-        prompt: {
-          config: { provider: 'fake', model: 'model' },
-          system: 'system',
-        },
-        promptChange: { seq: 1, kind: 'initial' },
-      },
-      {
-        purpose: 'compaction',
-        startSeq: 5,
-        resultSeq: 6,
-        replacementSeq: 7,
-        status: 'complete',
-        summary: [{ type: 'text', text: 'summary' }],
-      },
-    ])
-    expect(snapshot.callSchemas.get('call-1')?.name).toBe('read')
-  })
-
-  it('does not promote a truncated resume or change header to the initial prompt', () => {
-    for (const reason of ['resume', 'change'] as const) {
-      const snapshot = inspectRequests(entriesOf([
-        at(10, 'step/start', { turn: 3, step: 1 }),
-        at(11, 'request/header', {
-          reason,
-          header: {
-            config: { provider: 'fake', model: 'model' },
-            system: 'tail-window prompt',
-          },
-        }),
-      ]))
-
-      expect(snapshot.requests[0]).toMatchObject({
-        purpose: 'assistant',
-        prompt: { system: 'tail-window prompt' },
-      })
-      expect(snapshot.requests[0]).not.toHaveProperty('promptChange')
-    }
-  })
-
-  it('classifies a prompt change once the preceding header is loaded', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'step/start', { turn: 1, step: 1 }),
-      at(1, 'request/header', {
-        reason: 'initial',
-        header: {
-          config: { provider: 'fake', model: 'model' },
-          system: 'before',
-        },
-      }),
-      at(2, 'step/start', { turn: 1, step: 2 }),
-      at(3, 'request/header', {
-        reason: 'change',
-        header: {
-          config: { provider: 'fake', model: 'model' },
-          system: 'after',
-        },
-      }),
-    ]))
-
-    expect(snapshot.requests[1]).toMatchObject({
-      promptChange: {
-        seq: 3,
-        kind: 'system',
-        previous: { system: 'before' },
-      },
-    })
-  })
-
-  it('preserves a standalone compaction owner without widening assistant turns', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'compact/start', { turn: null }),
-      at(1, 'compact/summary', {
-        summary: [{ type: 'text', text: 'standalone summary' }],
-        provider: 'fake',
-        model: 'compact-model',
-      }),
-      at(2, 'compact/end', { turn: null }),
-      at(3, 'step/start', { turn: 2, step: 1 }),
-    ]))
-
-    const [compaction, assistant] = snapshot.requests
-    expect(compaction).toMatchObject({
-      purpose: 'compaction',
-      turn: null,
-      step: 0,
-      status: 'complete',
-    })
-    expect(assistant).toMatchObject({
-      purpose: 'assistant',
-      turn: 2,
-      step: 1,
-      status: 'running',
-    })
-    if (assistant?.purpose === 'assistant') {
-      const turn: number = assistant.turn
-      expect(turn).toBe(2)
-    }
-  })
-
-  it('interrupts an orphaned compaction at end-seed before projecting a new attempt', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'compact/start', { turn: null }),
-      at(1, 'session/end-seed', {}),
-      at(2, 'compact/start', { turn: null }),
-      at(3, 'compact/summary', {
-        summary: [{ type: 'text', text: 'replacement summary' }],
-        provider: 'fake',
-        model: 'compact-model',
-      }),
-      at(4, 'compact/end', { turn: null }),
-    ]))
-
-    expect(snapshot.requests).toMatchObject([
-      {
-        purpose: 'compaction',
-        startSeq: 0,
-        status: 'error',
-        completedAt: 1_700_000_000_001,
-        error: 'Compaction was interrupted before completion.',
-      },
-      {
-        purpose: 'compaction',
-        startSeq: 2,
-        status: 'complete',
-        completedAt: 1_700_000_000_004,
-        summary: [{ type: 'text', text: 'replacement summary' }],
-      },
-    ])
-  })
-
-  it('captures schemas for nested tool dispatches from the active request header', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'request/header', {
-        reason: 'initial',
-        header: {
-          config: { provider: 'fake', model: 'model' },
-          tools: [{
-            name: 'read',
-            description: 'Read a file.',
-            parameters: { type: 'object' },
-          }],
-        },
-      }),
-      at(1, 'tool/code-dispatch-start', {
-        parentCallId: 'parent',
-        subCallId: 'nested',
-        name: 'read',
-        arguments: {},
-      }),
-    ]))
-
-    expect(snapshot.callSchemas.get('nested')?.name).toBe('read')
-  })
-
-  it('keeps chunk-reported usage through request failure and prefers it to message fallback', () => {
-    const chunkUsage = { inputTokens: 21, outputTokens: 3 }
-    const retryUsage = {
-      inputTokens: 5,
-      outputTokens: 2,
-      cacheReadTokens: 8,
-      reasoningTokens: 1,
-    }
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'step/start', { turn: 1, step: 1 }),
-      at(1, 'assistant/chunk', {
-        turn: 1,
-        step: 1,
-        chunk: { type: 'usage', usage: chunkUsage },
-      }),
-      at(2, 'llm/retry', {
-        turn: 1,
-        step: 1,
-        retry: 1,
-        maxRetries: 2,
-        delayMs: 100,
-        failure: { message: 'rate limited' },
-      }),
-      at(3, 'assistant/chunk', {
-        turn: 1,
-        step: 1,
-        chunk: { type: 'usage', usage: retryUsage },
-      }),
-      at(4, 'assistant/message', {
-        turn: 1,
-        step: 1,
-        message: createAssistantMessage({
-          content: [{ type: 'text', text: 'recovered' }],
-          source: { provider: 'fake', model: 'model' },
-        }),
-        usage: { inputTokens: 1, outputTokens: 1 },
-      }),
-    ]))
-
-    expect(snapshot.requests[0]).toMatchObject({
-      status: 'complete',
-      usage: {
-        inputTokens: 26,
-        outputTokens: 5,
-        cacheReadTokens: 8,
-        reasoningTokens: 1,
-      },
-    })
-  })
-
-  it('keeps provider credential fragments out of projected request errors', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'step/start', { turn: 1, step: 1 }),
-      at(1, 'turn/end', {
-        turn: 1, reason: { kind: 'error', error: {
-          code: 'AUTH',
-          message: 'Authentication Fails, Your api key: sk-preview-secret is invalid',
-        },
-        },
-      }),
-      at(2, 'step/start', { turn: 2, step: 1 }),
-      at(3, 'turn/end', {
-        turn: 2, reason: { kind: 'error', error: { message: 'plugin exploded', code: 'UNKNOWN' } },
-      }),
-    ]))
-
-    expect(snapshot.requests).toMatchObject([
-      { status: 'error', error: 'API key is invalid' },
-      { status: 'error', error: 'plugin exploded' },
-    ])
-  })
-
-  it('treats a scrubbed durable-fixture tool catalog as unavailable', () => {
-    const snapshot = inspectRequests(entriesOf([
-      at(0, 'step/start', { turn: 1, step: 1 }),
-      at(1, 'request/header', {
-        reason: 'initial',
-        header: {
-          config: { provider: 'fake', model: 'model' },
-          tools: '{{tools}}',
-        },
-      }),
-      at(2, 'tool/call', {
-        turn: 1,
-        step: 1,
-        callId: 'call-1',
-        name: 'read',
-        arguments: '{}',
-      }),
-    ]))
-
-    expect(snapshot.callSchemas).toEqual(new Map())
-    const [request] = snapshot.requests
-    expect(request?.purpose === 'assistant' ? request.prompt?.tools : undefined).toEqual([])
-  })
-})
--- a/packages/client/runtime/tests/scope.spec.ts
+++ b/packages/client/runtime/tests/scope.spec.ts
@@ -6,14 +6,14 @@
 * and a subject-less root dispatch stays unfiltered. Scope-owned listeners
 * dispose with the fiber.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import { createScope, scopeOf } from '../src/client/agents/scope.ts'

 const sid = (k: string): SessionId => k as SessionId

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Events {
    /**
     * Test-only routed probe event.
--- a/packages/client/runtime/tests/session-history-source.spec.ts
+++ b/packages/client/runtime/tests/session-history-source.spec.ts
@@ -1,180 +0,0 @@
-import { afterEach, describe, expect, it, vi } from 'vitest'
-import type { SessionEvent } from '@deepseek-ai/dsh-session/types'
-import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
-import { SessionHistorySource } from '../src/client/session-history/source.ts'
-import { FakeApiClient, deferred, err, ok } from './fake-api.ts'
-import { entries, ev, plainTurn } from './event-script.ts'
-
-const SID = 'history-s1' as SessionId
-
-afterEach(() => {
-  vi.unstubAllGlobals()
-})
-
-function histResponse(events: SessionEvent[], hasMore = false) {
-  return Promise.resolve(ok({ events: entries(events) as never[], hasMore }))
-}
-
-describe('SessionHistorySource', () => {
-  it('loads the tail first and prepends older pages on demand', async () => {
-    const pages = [
-      plainTurn(0, 0, '最早问', '最早答'),
-      plainTurn(6, 1, '中间问', '中间答'),
-      plainTurn(12, 2, '最新问', '最新答'),
-    ]
-    const api = new FakeApiClient()
-    api.onHistory = (payload) => {
-      if (payload.beforeSeq === undefined) return histResponse(pages[2]!, true)
-      if (payload.beforeSeq === 12) return histResponse(pages[1]!, true)
-      return histResponse(pages[0]!, false)
-    }
-    const source = new SessionHistorySource(SID, api)
-
-    await source.loadTail()
-
-    expect(api.callsOf('session.history')).toHaveLength(1)
-    expect(source.getSnapshot().hasMore).toBe(true)
-    expect(source.getSnapshot().baseSeq).toBe(12)
-    expect(source.getSnapshot().inspection.eventNodes.map(node => node.seq))
-      .toEqual([13, 15])
-
-    expect(await source.loadOlder()).toBe(true)
-    expect(await source.loadOlder()).toBe(true)
-    expect(await source.loadOlder()).toBe(false)
-
-    expect(api.callsOf('session.history')).toHaveLength(3)
-    expect(source.getSnapshot().hasMore).toBe(false)
-    expect(source.getSnapshot().baseSeq).toBe(0)
-    expect(source.getSnapshot().inspection.eventNodes.map(node => node.seq))
-      .toEqual([1, 3, 7, 9, 13, 15])
-  })
-
-  it('pins a lazy inspection to the entries in its source snapshot', async () => {
-    const api = new FakeApiClient()
-    api.onHistory = () => histResponse(plainTurn(0, 0, '问', '答'))
-    const source = new SessionHistorySource(SID, api)
-    await source.loadTail()
-    const before = source.getSnapshot()
-
-    source.handleMuxFrame({
-      type: 'session/event',
-      sessionId: SID,
-      event: ev.user(6, 'later'),
-    })
-
-    expect(before.inspection.eventNodes.map(node => node.seq)).toEqual([1, 3])
-    expect(source.getSnapshot().inspection.eventNodes.map(node => node.seq))
-      .toEqual([1, 3, 6])
-  })
-
-  it('publishes multiple assistant chunks once per browser frame', async () => {
-    const api = new FakeApiClient()
-    api.onHistory = () => histResponse(plainTurn(0, 0, '问', '答'))
-    const source = new SessionHistorySource(SID, api)
-    await source.loadTail()
-    const frames: FrameRequestCallback[] = []
-    vi.stubGlobal('requestAnimationFrame', (callback: FrameRequestCallback) => {
-      frames.push(callback)
-      return frames.length
-    })
-    let notifications = 0
-    const unsubscribe = source.subscribe(() => { notifications++ })
-    const before = source.getSnapshot().inspection
-    const finalizedNodes = before.eventNodes
-    const requests = before.requests
-    const contexts = before.contexts
-
-    for (const event of [
-      ev.chunkStart(6, 1),
-      ev.chunkText(7, 1, 'stream '),
-      ev.chunkText(8, 1, 'content'),
-    ]) {
-      source.handleMuxFrame({
-        type: 'session/event',
-        sessionId: SID,
-        event,
-      })
-    }
-
-    expect(frames).toHaveLength(1)
-    expect(notifications).toBe(0)
-    frames[0]?.(0)
-    await Promise.resolve()
-
-    expect(notifications).toBe(1)
-    const streamed = source.getSnapshot().inspection
-    expect(streamed.eventNodes).toBe(finalizedNodes)
-    expect(streamed.requests).toBe(requests)
-    expect(streamed.contexts).toBe(contexts)
-    expect(streamed.partial?.blocks).toEqual([
-      { kind: 'text', text: 'stream content' },
-    ])
-
-    source.handleMuxFrame({
-      type: 'session/event',
-      sessionId: SID,
-      event: ev.chunkText(9, 1, ' then final'),
-    })
-    source.handleMuxFrame({
-      type: 'session/event',
-      sessionId: SID,
-      event: ev.assistant(10, 1, 'stream content then final'),
-    })
-    await Promise.resolve()
-
-    expect(notifications).toBe(2)
-    const finalized = source.getSnapshot().inspection
-    expect(finalized.eventNodes).not.toBe(finalizedNodes)
-    expect(finalized.partial).toBeNull()
-    frames[1]?.(0)
-    await Promise.resolve()
-    expect(notifications).toBe(2)
-    unsubscribe()
-  })
-
-  it('stops loading when an older page fails to advance', async () => {
-    const api = new FakeApiClient()
-    api.onHistory = payload => payload.beforeSeq === undefined
-      ? histResponse(plainTurn(6, 1, '新问', '新答'), true)
-      : Promise.resolve(err({
-        code: 'internal',
-        message: 'page unavailable',
-        details: {},
-      }))
-    const source = new SessionHistorySource(SID, api)
-
-    await source.loadTail()
-    expect(await source.loadOlder()).toBe(false)
-
-    expect(api.callsOf('session.history')).toHaveLength(2)
-    expect(source.getSnapshot().hasMore).toBe(true)
-  })
-
-  it('finishes an already started older page after consumer cancellation', async () => {
-    const middle = deferred<Awaited<ReturnType<FakeApiClient['onHistory']>>>()
-    const olderStarted = deferred<undefined>()
-    const api = new FakeApiClient()
-    api.onHistory = (payload) => {
-      if (payload.beforeSeq === undefined) {
-        return histResponse(plainTurn(12, 2, '最新问', '最新答'), true)
-      }
-      olderStarted.resolve(undefined)
-      return middle.promise
-    }
-    const source = new SessionHistorySource(SID, api)
-    const controller = new AbortController()
-    await source.loadTail(controller.signal)
-    const complete = source.loadOlder(controller.signal)
-    await olderStarted.promise
-    controller.abort()
-    middle.resolve(ok({
-      events: entries(plainTurn(6, 1, '中间问', '中间答')) as never[],
-      hasMore: true,
-    }))
-
-    expect(await complete).toBe(true)
-
-    expect(api.callsOf('session.history')).toHaveLength(2)
-    expect(source.getSnapshot().hasMore).toBe(true)
-  })
-})
--- a/packages/client/runtime/tests/session.spec.ts
+++ b/packages/client/runtime/tests/session.spec.ts
@@ -123,12 +123,13 @@ function testViewDefinition(): ConversationViewDefinition<ChatConversationViewNo

 const TEST_EVENT_DEFINITION: ConversationNodeDefinition<TestEventState> = {
  kind: 'runtime-test-event',
+  target: 'chat',
  match: event => ({ id: String(event.seq), role: 'start' }),
  start: (_context, match) => ({ event: match.event, view: match.view }),
  update: context => context.state,
  publication: match => match.event.type === 'assistant/chunk' ? 'animation-frame' : 'immediate',
-  buildViewNode: (context, target) => {
-    if (target !== 'chat' || context.state === undefined || context.start === undefined) return null
+  buildViewNode: (context) => {
+    if (context.state === undefined || context.start === undefined) return null
    return {
      key: context.key,
      kind: 'runtime-test-event',
--- a/packages/client/runtime/tests/sessions-service.spec.ts
+++ b/packages/client/runtime/tests/sessions-service.spec.ts
@@ -6,7 +6,7 @@
 * deferral — the stage follows list.current), binding identity, breadcrumb
 * projection, create.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { afterEach, describe, expect, it, vi } from 'vitest'
 import type { SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import { SessionCreateError, SessionsService, scopeOf } from '../src/client/sessions/service.ts'
--- a/packages/client/runtime/tests/settings-scope.spec.ts
+++ b/packages/client/runtime/tests/settings-scope.spec.ts
@@ -1,5 +1,5 @@
-import { Context } from 'cordis'
-import z from 'schemastery'
+import { Context } from '@deepseek-ai/cordis'
+import z from '@deepseek-ai/schemastery'
 import { describe, expect, it, vi } from 'vitest'
 import type { RpcResponse, SettingsNamespaceView } from '@deepseek-ai/dsh-client-connection/client'
 import {
--- a/packages/client/runtime/tests/slots-service.spec.ts
+++ b/packages/client/runtime/tests/slots-service.spec.ts
@@ -5,7 +5,7 @@
 * contract (double install / not installed / non-root key), store instance
 * resolution and lifecycle on the ledger axis, and the entry-unload cascade.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import type { FC } from 'react'
 import type { SlotRendererHost } from '@deepseek-ai/dsh-client-ui-slots'
--- a/packages/client/runtime/tests/wire-events.spec.ts
+++ b/packages/client/runtime/tests/wire-events.spec.ts
@@ -4,7 +4,7 @@
 * ctx 'session/preset-changed'; each established connection generation →
 * ctx 'connection/reset' (the forced cache-invalidation broadcast).
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/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'
--- a/packages/client/runtime/tests/workspaces-service.spec.ts
+++ b/packages/client/runtime/tests/workspaces-service.spec.ts
@@ -1,4 +1,4 @@
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import type { SessionId, WorkspaceId, WorkspaceView } from '@deepseek-ai/dsh-client-connection/client'
 import { SessionsService } from '../src/client/sessions/service.ts'
--- a/packages/client/schema-form/package.json
+++ b/packages/client/schema-form/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-schema-form",
  "description": "Schema/draft model layer for settings editors: rehydrates a serialized schemastery schema, validates drafts, and edits them immutably by path",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/schema-form"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -20,15 +27,15 @@
  },
  "license": "BSD-3-Clause",
  "dependencies": {
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/schemastery": "workspace:^"
  },
  "peerDependencies": {
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "devDependencies": {
    "@deepseek-ai/dsh-invariants": "workspace:^",
-    "cordis": "^4.0.0-rc.7"
+    "@deepseek-ai/cordis": "workspace:^"
  },
  "files": [
    "lib/index.js",
--- a/packages/client/schema-form/src/invariant.ts
+++ b/packages/client/schema-form/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-schema-form'
--- a/packages/client/schema-form/src/model.ts
+++ b/packages/client/schema-form/src/model.ts
@@ -6,7 +6,7 @@
 * @module @deepseek-ai/dsh-client-schema-form/model
 */

-import Schema from 'schemastery'
+import Schema from '@deepseek-ai/schemastery'

 /** Live schemastery node; the renderer reads only its structural relations. */
 export type SchemaNode = Schema
--- a/packages/client/schema-form/tests/invariant.spec.ts
+++ b/packages/client/schema-form/tests/invariant.spec.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import * as SchemaFormInvariant from '@deepseek-ai/dsh-client-schema-form/invariant'
 import InvariantService from '@deepseek-ai/dsh-invariants'

--- a/packages/client/schema-form/tests/model.spec.ts
+++ b/packages/client/schema-form/tests/model.spec.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import Schema from 'schemastery'
+import Schema from '@deepseek-ai/schemastery'
 import {
  deletePath, getPath, hasPath, nodeAtPath, rehydrateSchema, setPath, validateDraft,
 } from '../src/model.ts'
--- a/packages/client/test-runtime/README.i18n.yaml
+++ b/packages/client/test-runtime/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/test-runtime/README.md
-README.md: 455d6f564cea2cb8f88165a8bba1047c762d2fb0
-README.zh.md: 7c4bd0e552c71f55e3766a0c64580cc178461310
+README.md: d5c0797c37168578f08a08f3d5d57670d7973db0
+README.zh.md: 57854213c3a9ea28850665eb26d07bc824c017e8
--- a/packages/client/test-runtime/README.md
+++ b/packages/client/test-runtime/README.md
@@ -8,7 +8,7 @@ The doubles implement the same outward faces features receive through ctx (`Test

 Local DOM snapshots: `declare(children)` registers an auto frame whose per-key `<div data-slot>` wrappers are snapshot roots; `renderSlot(key, owner)` returns the slot-local view (container, scoped Testing Library queries, in-place `update(owner)`); a registered snapshot serializer folds CSS-module class hashes (`_frame_a1b2c3` → `frame`) to keep `.snap` files structural and collapses `<svg>` internals to a `data-content` fingerprint. Suites needing a custom page frame use `root.declare(children, Frame)` instead; `mount(plugin)` runs a real fiber with fail-loud service prechecks, and `dispose()` tears down views, feature fibers, minted scopes, and persisted store state on one axis.

-Not part of the product plugin graph (no `dshClient`); feature packages depend on it in `devDependencies` only.
+Not part of the product plugin graph (no `dsh.client`); feature packages depend on it in `devDependencies` only.

 ## Model Experience

--- a/packages/client/test-runtime/README.zh.md
+++ b/packages/client/test-runtime/README.zh.md
@@ -8,7 +8,7 @@

 局部 DOM 快照：`declare(children)` 注册自动 frame，逐 key 的 `<div data-slot>` 包裹层即快照根；`renderSlot(key, owner)` 返回该 slot 的局部视图（container、限定范围的 Testing Library 查询、原位 `update(owner)`）；注册的快照序列化器把 CSS-module 哈希类名折回语义名（`_frame_a1b2c3` → `frame`）保持 `.snap` 只含结构，并把 `<svg>` 内部折叠为 `data-content` 指纹。需要自定义页面 frame 的套件改用 `root.declare(children, Frame)`；`mount(plugin)` 在真实 fiber 上运行并对缺失服务先行报错；`dispose()` 沿单一轴拆除视图、feature fiber、已铸 scope 与持久化 store 状态。

-不属于产品插件图（无 `dshClient`）；feature 包仅以 `devDependencies` 依赖之。
+不属于产品插件图（无 `dsh.client`）；feature 包仅以 `devDependencies` 依赖之。

 ## 模型体验

--- a/packages/client/test-runtime/package.json
+++ b/packages/client/test-runtime/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-test-runtime",
  "description": "jsdom slot test runtime: real Cordis Context + SlotsService + web-react renderer with test-owned session/workspace doubles for feature specs",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/test-runtime"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -25,12 +32,12 @@
    "vitest": "^4.1.8"
  },
  "peerDependencies": {
-    "@deepseek-ai/dsh-client-runtime": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
-    "@deepseek-ai/dsh-client-web-react": "^0.0.1",
-    "@deepseek-ai/dsh-host-apiproxy": "^0.0.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-client-web-react": "workspace:^",
+    "@deepseek-ai/dsh-host-apiproxy": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  },
@@ -42,7 +49,7 @@
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@types/react": "~18.3.1",
    "@types/react-dom": "~18.3.0",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0",
    "react-dom": "^18.2.0"
  },
--- a/packages/client/test-runtime/src/fixtures.ts
+++ b/packages/client/test-runtime/src/fixtures.ts
@@ -2,7 +2,9 @@
 import type {
  ConversationSnapshot, ISession, SessionId, SessionSummary, WorkspaceListState,
 } from '@deepseek-ai/dsh-client-runtime/client'
-import { EMPTY_CHAT_SNAPSHOT } from '@deepseek-ai/dsh-client-runtime/client'
+import {
+  EMPTY_CHAT_SNAPSHOT, EMPTY_CONVERSATION_VIEWS,
+} from '@deepseek-ai/dsh-client-runtime/client'

 /**
 * Fixture overrides for the session behavior face: any subset of the
@@ -46,6 +48,7 @@ export interface SessionFixture {
 export function conversationSnapshot(sessionId: SessionId): ConversationSnapshot {
  return {
    sessionId,
+    views: EMPTY_CONVERSATION_VIEWS,
    chat: EMPTY_CHAT_SNAPSHOT,
    nodes: [],
    turnTimings: new Map(),
--- a/packages/client/test-runtime/src/index.ts
+++ b/packages/client/test-runtime/src/index.ts
@@ -5,7 +5,7 @@
 * declaration, registration, scope, store, inject, rendering, updates, and
 * disposal without hand-building the machinery per suite.
 *
- * Not part of the product plugin graph (no `dshClient`); feature packages
+ * Not part of the product plugin graph (no `dsh.client`); feature packages
 * depend on it in devDependencies only. It copies no SlotCore/renderer/store
 * machinery — everything mounts the production implementations.
 * @module @deepseek-ai/dsh-client-test-runtime
@@ -14,8 +14,8 @@
 * `keyof SlotMap & string` is the declare-merge key pattern (see ui-slots):
 * this compilation unit sees only the runtime's 'root' row, but consumer
 * programs merge their own keys in; the rule fires on the narrow-map view. */
-import { Context, Inject } from 'cordis'
-import type { Fiber, Plugin } from 'cordis'
+import { Context, Inject } from '@deepseek-ai/cordis'
+import type { Fiber, Plugin } from '@deepseek-ai/cordis'
 import { createElement, Fragment, useSyncExternalStore } from 'react'
 import type { ReactNode } from 'react'
 import { act, render, within } from '@testing-library/react'
--- a/packages/client/test-runtime/src/invariant.ts
+++ b/packages/client/test-runtime/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-test-runtime'
--- a/packages/client/test-runtime/src/sessions.ts
+++ b/packages/client/test-runtime/src/sessions.ts
@@ -1,5 +1,5 @@
 /** Test-owned sessions face: the SlotsService host contract over declarative fixtures. */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { AttachmentIdType } from '@deepseek-ai/dsh-attachment'
 import { createScope, scopeOf, SessionProvideChannel } from '@deepseek-ai/dsh-client-runtime/client'
 import { createSnapshotStore } from '@deepseek-ai/dsh-client-runtime/client'
--- a/packages/client/test-runtime/tests/invariant.spec.ts
+++ b/packages/client/test-runtime/tests/invariant.spec.ts
@@ -1,5 +1,5 @@
 import { describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import * as TestRuntimeInvariant from '@deepseek-ai/dsh-client-test-runtime/invariant'
 import InvariantService from '@deepseek-ai/dsh-invariants'

--- a/packages/client/tsdown.client.ts
+++ b/packages/client/tsdown.client.ts
@@ -32,6 +32,14 @@ const CSS_VIRTUAL_SUFFIX = '.mjs'
 */
 export const INLINE_SAFE = /^@deepseek-ai\/dsh-(host-apiproxy|session|llm|tools|brand)(\/|$)/

+/**
+ * Vendored framework libraries: rescoped into @deepseek-ai, so the gate below
+ * would read them as plugin packages. They carry no cross-plugin runtime
+ * identity to share — the framework itself is a platform module (external),
+ * while these are ordinary libraries a browser bundle inlines.
+ */
+const VENDORED_LIBRARY = /^@deepseek-ai\/(cosmokit|schemastery)(\/|$)/
+
 /** Generated descriptor/codec contribution with no shared runtime identity. */
 const GENERATED_REMOTE = /^@deepseek-ai\/dsh-[a-z0-9]+(?:-[a-z0-9]+)*\/remote$/

@@ -208,6 +216,7 @@ function clientConfig(id: string, entry: string): UserConfig {
      resolveId(source: string) {
        if (!source.startsWith('@deepseek-ai/')) return null
        if (CLIENT_EXTERNALS.includes(source)) return null // platform module: external wins
+        if (VENDORED_LIBRARY.test(source)) return null // vendored library: inline, no shared identity
        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), an inline-safe wire layer, or a generated /remote contribution — `
--- a/packages/client/ui-agent-preset/package.json
+++ b/packages/client/ui-agent-preset/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-ui-agent-preset",
  "description": "Agent-preset surfaces: the default for later sessions, this session's seat, and the composition editor",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-agent-preset"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,15 +29,17 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [
-      "@deepseek-ai/dsh-client-connection",
-      "@deepseek-ai/dsh-client-locale",
-      "@deepseek-ai/dsh-client-runtime",
-      "@deepseek-ai/dsh-client-ui-conversation",
-      "@deepseek-ai/dsh-client-ui-settings"
-    ],
-    "platform": "web"
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-connection",
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-runtime",
+        "@deepseek-ai/dsh-client-ui-conversation",
+        "@deepseek-ai/dsh-client-ui-settings"
+      ],
+      "platform": "web"
+    }
  },
  "scripts": {
    "bundle": "tsdown",
@@ -38,16 +47,16 @@
  },
  "license": "BSD-3-Clause",
  "peerDependencies": {
-    "@deepseek-ai/dsh-client-connection": "^0.0.1",
-    "@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-primitives": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-settings": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
-    "@deepseek-ai/dsh-client-web-react": "^0.0.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-conversation": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-settings": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-client-web-react": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "devDependencies": {
@@ -62,7 +71,7 @@
    "@deepseek-ai/dsh-client-web-react": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "files": [
--- a/packages/client/ui-agent-preset/src/client/locales.ts
+++ b/packages/client/ui-agent-preset/src/client/locales.ts
@@ -42,7 +42,7 @@ export const en: Record<AgentPresetSettingsKey, string> = {
    'All Standard mode capabilities, with tools exposed through the Code Mode SDK so the model can combine multi-step operations in one TypeScript program.',
  presetMinimalName: 'Minimal mode',
  presetMinimalDescription:
-    'Two-tool coding agent with only bash and str_replace_editor, for benchmarks and minimal reproductions.',
+    'Two-tool coding agent with persistent bash and str_replace_editor.',
  presetCordisName: 'Creator mode',
  presetCordisDescription:
    'Built for creating custom agent presets, with all Standard mode capabilities plus runtime inspection, plugin experiments, and preset-authoring guidance.',
@@ -103,7 +103,7 @@ export const zh: Record<AgentPresetSettingsKey, string> = {
  presetCodeName: '代码模式',
  presetCodeDescription: '具备标准模式的全部能力，并通过 Code Mode SDK 呈现工具，让模型用一个 TypeScript 程序组合多步操作。',
  presetMinimalName: '极简模式',
-  presetMinimalDescription: '仅提供 bash 与 str_replace_editor 的双工具编码 Agent，用于基准测试和最小复现。',
+  presetMinimalDescription: '仅提供持久 bash 与 str_replace_editor 的双工具编码 Agent。',
  presetCordisName: '创造模式',
  presetCordisDescription: '用于创建自定义 Agent preset：具备标准模式的全部能力，并提供运行时检查、插件实验和 preset 创作指导。',
  duplicate: '复制',
--- a/packages/client/ui-agent-preset/src/index.ts
+++ b/packages/client/ui-agent-preset/src/index.ts
@@ -2,7 +2,7 @@
 * Agent-preset surface plugin, node half. The empty apply exists so the plugin
 * appears in the host cordis.yml / Loader; the browser half ships the
 * General-settings row through exports["./client"], discovered from the
- * package.json dshClient declaration.
+ * package.json dsh.client declaration.
 */

 /** Host plugin body — no host-side behavior for this surface plugin. */
--- a/packages/client/ui-agent-preset/src/invariant.ts
+++ b/packages/client/ui-agent-preset/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-ui-agent-preset'
--- a/packages/client/ui-agent-preset/tests/apply.spec.ts
+++ b/packages/client/ui-agent-preset/tests/apply.spec.ts
@@ -5,7 +5,7 @@
 * that are already showing, so a default set from one converges the other.
 */

-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { resolveSlotLabel } from '@deepseek-ai/dsh-client-ui-slots'
 import { SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
--- a/packages/client/ui-agent-preset/tests/invariant.spec.ts
+++ b/packages/client/ui-agent-preset/tests/invariant.spec.ts
@@ -1,7 +1,7 @@
 /** The package's node half: an empty host body and an explained empty invariant companion. */

 import { describe, expect, it } from 'vitest'
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import InvariantService from '@deepseek-ai/dsh-invariants'
 import * as AgentPresetInvariant from '@deepseek-ai/dsh-client-ui-agent-preset/invariant'

--- a/packages/client/ui-command/package.json
+++ b/packages/client/ui-command/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-ui-command",
  "description": "Client command surface: global directory cache, '/' source, three command UI kinds, popupSelect registry",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-command"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,14 +29,16 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [
-      "@deepseek-ai/dsh-client-runtime",
-      "@deepseek-ai/dsh-client-locale",
-      "@deepseek-ai/dsh-client-ui-slash",
-      "@deepseek-ai/dsh-client-ui-conversation"
-    ],
-    "platform": "web"
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-runtime",
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-ui-slash",
+        "@deepseek-ai/dsh-client-ui-conversation"
+      ],
+      "platform": "web"
+    }
  },
  "scripts": {
    "bundle": "tsdown",
@@ -40,15 +49,15 @@
    "clsx": "^2.0.0"
  },
  "peerDependencies": {
-    "@deepseek-ai/dsh-client-connection": "^0.0.1",
-    "@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-primitives": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-slash": "^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",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-conversation": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slash": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "devDependencies": {
@@ -62,7 +71,7 @@
    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
    "@deepseek-ai/dsh-invariants": "workspace:^",
    "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "files": [
--- a/packages/client/ui-command/src/client/index.ts
+++ b/packages/client/ui-command/src/client/index.ts
@@ -28,7 +28,7 @@ export type {
 } from './contract.ts'
 export type { CommandKey } from './locales.ts'

-declare module 'cordis' {
+declare module '@deepseek-ai/cordis' {
  interface Context {
    command: CommandService
  }
--- a/packages/client/ui-command/src/client/service.ts
+++ b/packages/client/ui-command/src/client/service.ts
@@ -7,8 +7,8 @@
 * addresses the session's agent by sessionId — sessions are always
 * agent-backed.
 */
-import { Service } from 'cordis'
-import type { Context } from 'cordis'
+import { Service } from '@deepseek-ai/cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { ConnectionHandle, SessionId } from '@deepseek-ai/dsh-client-connection/client'
 import type { ClientContext, ISessions } from '@deepseek-ai/dsh-client-runtime/client'
 import type {
--- a/packages/client/ui-command/src/index.ts
+++ b/packages/client/ui-command/src/index.ts
@@ -1,7 +1,7 @@
 /**
 * Command UI 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
+ * via exports["./client"], discovered through the package.json dsh.client
 * declaration. The host command registry itself mounts separately
 * (bootHost + CommandService).
 */
--- a/packages/client/ui-command/src/invariant.ts
+++ b/packages/client/ui-command/src/invariant.ts
@@ -4,7 +4,7 @@
 */

 /* jscpd:ignore-start */
-import type { Context } from 'cordis'
+import type { Context } from '@deepseek-ai/cordis'
 import type { InvariantInstaller } from '@deepseek-ai/dsh-invariants'

 const PACKAGE_NAME = '@deepseek-ai/dsh-client-ui-command'
--- a/packages/client/ui-command/tests/browser-plugin.spec.ts
+++ b/packages/client/ui-command/tests/browser-plugin.spec.ts
@@ -6,7 +6,7 @@
 * scope → popupFor; unknown id fails loud), both fold up on fiber disposal
 * (HMR safety), and the service satisfies the frozen CommandServiceContract.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it } from 'vitest'
 import { createScope, scopeOf, SlotsService } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
--- a/packages/client/ui-command/tests/service.spec.ts
+++ b/packages/client/ui-command/tests/service.spec.ts
@@ -7,7 +7,7 @@
 * payload, the scoped consume-token dispatch, per-session popupFor
 * lifecycle, and the directory invalidation event subscriptions.
 */
-import { Context } from 'cordis'
+import { Context } from '@deepseek-ai/cordis'
 import { describe, expect, it, vi } from 'vitest'
 import { createScope, scopeOf } from '@deepseek-ai/dsh-client-runtime/client'
 import type { SessionId } from '@deepseek-ai/dsh-client-runtime/client'
--- a/packages/client/ui-conversation/package.json
+++ b/packages/client/ui-conversation/package.json
@@ -1,8 +1,15 @@
 {
  "name": "@deepseek-ai/dsh-client-ui-conversation",
  "description": "Conversation domain: skeleton, ordered chat flow, composer with the Host-backed busy-Enter preference, and details host",
-  "version": "0.0.1",
-  "private": true,
+  "version": "0.0.1-rc.1",
+  "publishConfig": {
+    "access": "restricted"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/deepseek-ai/deepseek-harness.git",
+    "directory": "packages/client/ui-conversation"
+  },
  "type": "module",
  "main": "lib/index.js",
  "types": "lib/types/index.d.ts",
@@ -22,14 +29,16 @@
    "./src/*": "./src/*",
    "./package.json": "./package.json"
  },
-  "dshClient": {
-    "inject": [
-      "@deepseek-ai/dsh-client-connection",
-      "@deepseek-ai/dsh-client-locale",
-      "@deepseek-ai/dsh-client-runtime",
-      "@deepseek-ai/dsh-client-ui-layout"
-    ],
-    "platform": "web"
+  "dsh": {
+    "client": {
+      "inject": [
+        "@deepseek-ai/dsh-client-connection",
+        "@deepseek-ai/dsh-client-locale",
+        "@deepseek-ai/dsh-client-runtime",
+        "@deepseek-ai/dsh-client-ui-layout"
+      ],
+      "platform": "web"
+    }
  },
  "scripts": {
    "bundle": "tsdown",
@@ -39,25 +48,25 @@
  "dependencies": {
    "@deepseek-ai/dsh-settings": "workspace:^",
    "clsx": "^2.0.0",
-    "schemastery": "^3.18.0"
+    "@deepseek-ai/schemastery": "workspace:^"
  },
  "peerDependencies": {
-    "@deepseek-ai/dsh-agent": "^0.0.1",
-    "@deepseek-ai/dsh-attachment": "^0.0.1",
-    "@deepseek-ai/dsh-brand": "^0.0.1",
-    "@deepseek-ai/dsh-client-connection": "^0.0.1",
-    "@deepseek-ai/dsh-client-locale": "^0.0.1",
-    "@deepseek-ai/dsh-client-runtime": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-primitives": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-slash": "^0.0.1",
-    "@deepseek-ai/dsh-client-ui-slots": "^0.0.1",
-    "@deepseek-ai/dsh-compact": "^0.0.1",
-    "@deepseek-ai/dsh-commands": "^0.0.1",
-    "@deepseek-ai/dsh-invariants": "^0.0.1",
-    "@deepseek-ai/dsh-llm-retry": "^0.0.1",
-    "@deepseek-ai/dsh-token-meter": "^0.0.1",
-    "@deepseek-ai/dsh-tools": "^0.0.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/dsh-agent": "workspace:^",
+    "@deepseek-ai/dsh-attachment": "workspace:^",
+    "@deepseek-ai/dsh-brand": "workspace:^",
+    "@deepseek-ai/dsh-client-connection": "workspace:^",
+    "@deepseek-ai/dsh-client-locale": "workspace:^",
+    "@deepseek-ai/dsh-client-runtime": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slash": "workspace:^",
+    "@deepseek-ai/dsh-client-ui-slots": "workspace:^",
+    "@deepseek-ai/dsh-compact": "workspace:^",
+    "@deepseek-ai/dsh-commands": "workspace:^",
+    "@deepseek-ai/dsh-invariants": "workspace:^",
+    "@deepseek-ai/dsh-llm-retry": "workspace:^",
+    "@deepseek-ai/dsh-token-meter": "workspace:^",
+    "@deepseek-ai/dsh-tools": "workspace:^",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "devDependencies": {
@@ -84,7 +93,7 @@
    "@deepseek-ai/dsh-tools": "workspace:^",
    "@deepseek-ai/dsh-tool-todo": "workspace:^",
    "@types/react": "~18.3.1",
-    "cordis": "^4.0.0-rc.7",
+    "@deepseek-ai/cordis": "workspace:^",
    "react": "^18.2.0"
  },
  "files": [
--- a/Show More
+++ b/Show More