Merge remote-tracking branch 'origin/master' into worktree/web-session-model-selector

# Conflicts:
#	.agents/notes/implemented/architecture/2026-07-15-llm-model-catalog-and-acp-selection.i18n.yaml
#	.agents/notes/implemented/architecture/2026-07-23-client-plugin-loading-model.i18n.yaml
#	apps/cli/src/web.ts
#	apps/web/tests/session-title.snapshot.ts
#	apps/web/tests/smoke-fixture.e2e.ts
#	packages/client/connection/src/client/api.ts
#	packages/client/connection/src/client/fixture.ts
#	packages/client/connection/src/client/index.ts
#	packages/client/runtime/src/client/index.ts
#	packages/client/runtime/src/client/sessions/conversation.ts
#	packages/client/runtime/src/client/sessions/session.ts
#	packages/client/runtime/tests/fake-api.ts
#	packages/client/ui-conversation/src/client/contract/slots.ts
#	packages/client/ui-conversation/src/client/index.ts
#	packages/client/ui-conversation/src/client/skeleton/ConversationRoot.tsx
#	packages/client/ui-conversation/src/client/skeleton/InputBar.module.css
#	packages/client/ui-conversation/src/client/skeleton/InputBar.tsx
#	packages/client/ui-conversation/tests/chat-stats-bash-sample.spec.tsx
#	packages/client/ui-conversation/tests/chat-toolview-slot.spec.tsx
#	packages/client/ui-conversation/tests/chat-view.spec.tsx
#	packages/client/ui-conversation/tests/gate-branch-tails.spec.tsx
#	packages/client/ui-conversation/tests/skeleton-branches.spec.tsx
#	packages/client/ui-conversation/tests/skeleton.spec.tsx
#	packages/host/apiproxy/README.md
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/host/apiproxy/src/api/rpc.schema.ts
#	packages/host/apiproxy/src/api/rpc.ts
#	packages/host/apiproxy/tests/api-proxy-models.spec.ts
#	packages/host/apiproxy/tests/rpc-schemas.spec.ts
#	packages/host/runtime/README.md
#	packages/llm/llm-deepseek/README.md
#	scripts/translation-pairing.manifest.json
#	tsconfig.client.json

packages/host/apiproxy/README.md

@@ -1,6 +1,6 @@
 # @deepseek-ai/dsh-host-apiproxy
 
-The ApiProxy front layer every client shape shares: the TS contract (`src/api/`, zero Node dependencies, importable from the browser) and the fetch carrier pair (`src/fetch/`: `toFetchHandler` on the host side, `AbstractApiClient` plus platform subclasses on the client side). Host assembly lives in `dsh-host-runtime`.
+The API gateway every client shape shares: the TS contract (`src/api/`, zero Node dependencies, importable from the browser), the fetch carrier pair (`src/fetch/`: `toFetchHandler` on the host side, `AbstractApiClient` plus platform subclasses on the client side), and the host-side implementation (`src/api-proxy.ts`: `createApiProxy` plus the default-exported `ApiProxyService` gateway plugin — config `{provider, model, workspaceRoot?}`, provides `ctx.apiProxy`). Transport-agnostic by design: this package registers no routes; carriers (HTTP today, IPC later) wrap `ctx.apiProxy` themselves. The shipped core composition lives in [`apps/cli/cordis.yml`](../../../apps/cli/cordis.yml).
 
 ## Contract layer (`/api`)
 
@@ -12,6 +12,8 @@ The mux stream projects the latest log-backed title as a validated `session/titl
 
 Session model routing is a session-domain contract. `session.history` returns the selected `modelTarget`, `session.models` returns that target with provider-grouped advisory model metadata and provider-local lookup failures, and `session.selectModel` replaces the target selected for the next prompt-assembly boundary. Catalog membership is not validation: a registered provider may accept an unlisted model, while an unregistered provider returns `model-unavailable`.
 
+Workspace and Session lists are separate reconnect baselines. `workspace.create` creates a unique name or adopts an existing directory, `session.create` accepts an optional preallocated Session id, and `host/workspace-changed` plus `host/session-added` carry committed increments in either arrival order. Frontend Workspace and Session Intents are client-only and have no wire method.
+
 ## Carrier layer (`/client` + root)
 
 `AbstractApiClient` holds every protocol invariant — rpcId minting, envelope wrap/unwrap, zod parsing, SSE frame decoding, unary timeout, microtask-batched envelope observation (`subscribeEnvelopes`) — while platform subclasses supply only the `doFetch` transport aspect. `InProcessApiClient` over `toFetchHandler(api)` is the isomorphic point: the full wire serialization/validation path with no network, used by `dsh -p` headless.
@@ -26,6 +28,6 @@ None; this package neither assembles nor sends a provider request.
 
 ## Known Limitations and Deferred Work
 
-- **`respond` routing is shipped, but pending-interaction state is host-side work** — the wire shape (POST `/api/respond`, `RpcReceipt`) is final; the pending table that makes late/duplicate answers meaningful lives in `dsh-host-runtime` and is still a stub there.
+- **`respond` routing is shipped, but pending-interaction state is host-side work** — the wire shape (POST `/api/respond`, `RpcReceipt`) is final; the pending table that makes late/duplicate answers meaningful lives in `src/api-proxy.ts` and is still minimal (questions only, no approvals).
 - **Reserved seams stay out of `RpcMethodMap`** — `session.fork`, `prompt.mode: 'inject'`, `task.list`, `host.listModels`, and a describe `hostInstanceId` are documented reservations; an unknown method fails loud at envelope parse rather than getting a not-implemented code.
 - **No protocol version field** — client and host ship together; `host.describe` gains a version negotiation field only when an independently released client exists.