Merge remote-tracking branch 'origin/master' into worktree/web-multimodal-image-input

# Conflicts:
#	docs/architecture.i18n.yaml
#	docs/architecture.md
#	docs/architecture.zh.md
#	docs/config-catalog.md
#	docs/core-data-structures/core.i18n.yaml
#	docs/core-data-structures/llm-streaming.i18n.yaml
#	docs/module-graph.md
#	examples/acp-agent/tests/snapshots/cordis-inspect-jsdoc/session.jsonl
#	packages/README.i18n.yaml
#	packages/client/connection/src/client/fixture.ts
#	packages/client/connection/src/index.ts
#	packages/client/runtime/README.i18n.yaml
#	packages/client/runtime/README.md
#	packages/client/runtime/README.zh.md
#	packages/client/runtime/src/client/sessions/conversation.ts
#	packages/client/ui-conversation/README.i18n.yaml
#	packages/client/ui-conversation/src/client/apply.ts
#	packages/client/ui-conversation/src/client/chat/ChatView.tsx
#	packages/client/ui-conversation/src/client/chat/MessageItem.tsx
#	packages/client/ui-conversation/src/client/contract/slots.ts
#	packages/client/ui-trajectory/tests/views.spec.tsx
#	packages/compact/compact-basic/README.i18n.yaml
#	packages/cordis/tool-cordis/src/api-catalog.ts
#	packages/host/apiproxy/src/api-proxy.ts
#	packages/host/apiproxy/src/api/index.ts
#	packages/host/apiproxy/src/api/sessions.ts
#	packages/host/apiproxy/src/index.ts
#	packages/host/apiproxy/tests/fetch-carrier.spec.ts
#	packages/llm/llm-deepseek/src/adapter.ts
#	packages/llm/llm-deepseek/tests/adapter.spec.ts
#	packages/llm/llm-deepseek/tests/serialize.spec.ts
#	packages/llm/llm-pi-ai/README.i18n.yaml
#	packages/llm/llm-pi-ai/src/adapter.ts
#	packages/llm/llm-pi-ai/src/index.ts
#	packages/llm/llm-pi-ai/tests/adapter.spec.ts
#	packages/llm/llm/src/types.ts
#	packages/ui/tui/README.i18n.yaml
#	packages/ui/tui/src/index.ts
#	packages/ui/tui/tests/tui.spec.ts

packages/client/connection/tests/fixture.spec.ts

@@ -68,7 +68,56 @@ describe('createFixtureApi', () => {
     // Unknown session: empty page, not an error (history of a bare id).
     const empty = await api.sessions.history(req({ sessionId: sid('no-such'), maxMessages: 10 }))
     if (!empty.result.ok) throw new Error('empty failed')
-    expect(empty.result.value).toEqual({ events: [], hasMore: false })
+    expect(empty.result.value).toEqual({
+      events: [],
+      hasMore: false,
+    })
+  })
+
+  it('serves grouped models and keeps a selected target for later history and fixture requests', async () => {
+    const api = createFixtureApi()
+    const sessionId = sid('fx-alpha')
+    const catalog = await api.sessions.models(req({ sessionId }))
+    if (!catalog.result.ok) throw new Error('models failed')
+    expect(catalog.result.value.groups.map(group => group.name)).toEqual(['DeepSeek', 'OpenAI'])
+    expect(catalog.result.value.groups[0]?.models.map(model => model.id))
+      .toEqual(['deepseek-v4-flash', 'deepseek-v4-pro'])
+
+    const selected = await api.sessions.selectModel(req({
+      sessionId,
+      provider: 'openai',
+      model: 'gpt-5',
+    }))
+    if (!selected.result.ok) throw new Error('selection failed')
+    expect(selected.result.value.selected).toEqual({ provider: 'openai', model: 'gpt-5' })
+    const history = await api.sessions.history(req({ sessionId }))
+    if (!history.result.ok) throw new Error('history failed')
+
+    const prompt = await api.sessions.prompt(req({
+      sessionId,
+      mode: 'queue',
+      content: [{ type: 'text', text: 'report model' }],
+    }))
+    expect(prompt.result.ok).toBe(true)
+    await new Promise(resolve => setTimeout(resolve, 600))
+    const after = await api.sessions.history(req({ sessionId }))
+    if (!after.result.ok) throw new Error('history failed')
+    expect(JSON.stringify(after.result.value.events)).toContain('openai/gpt-5')
+  })
+
+  it('emits the todo/write snapshot at the real tool boundary: between tool/call and tool/result, timestamps monotonic', async () => {
+    const api = createFixtureApi()
+    const tail = await api.sessions.history(req({ sessionId: sid('fx-alpha'), maxMessages: 10 }))
+    if (!tail.result.ok) throw new Error('history failed')
+    const events = tail.result.value.events.map(e => e.event)
+    const todoAt = events.findIndex(e => e.type === 'todo/write')
+    expect(todoAt).toBeGreaterThan(0)
+    // Production ordering (the tool appends mid-execution): call → snapshot → result.
+    expect(events[todoAt - 1]?.type).toBe('tool/call')
+    expect(events[todoAt + 1]?.type).toBe('tool/result')
+    const times = events.slice(todoAt - 1, todoAt + 2).map(e => e.time)
+    expect(times[0]).toBeLessThanOrEqual(times[1] ?? 0)
+    expect(times[1]).toBeLessThanOrEqual(times[2] ?? 0)
   })
 
   it('create adds a session and pushes host/session-added to open host streams', async () => {
@@ -412,6 +461,31 @@ describe('createFixtureApi', () => {
     expect(noop.result.value.workspace.updatedAt).toBe(before)
   })
 
+  it('workspace.delete removes only the Workspace row and emits the removal frame', async () => {
+    const api = createFixtureApi()
+    const abort = new AbortController()
+    const seen: HostFrame[] = []
+    const consuming = (async () => {
+      for await (const envelope of api.events.host(req({}), abort.signal)) {
+        seen.push(envelope.payload)
+        abort.abort()
+      }
+    })()
+    await new Promise(resolve => setTimeout(resolve, 10))
+    const missing = await api.workspace.delete(req({ workspaceId: 'fx-ws-void' as WorkspaceId }))
+    expect(missing.result).toMatchObject({ ok: false, error: { code: 'workspace-not-found' } })
+    const deleted = await api.workspace.delete(req({ workspaceId: 'fx-ws-fixture' as WorkspaceId }))
+    expect(deleted.result).toEqual({ ok: true, value: { deleted: true } })
+    await consuming
+    expect(seen).toEqual([{ type: 'host/workspace-removed', workspaceId: 'fx-ws-fixture' }])
+    const list = await api.workspace.list(req({}))
+    if (!list.result.ok) throw new Error('workspace list failed')
+    expect(list.result.value.items.some(workspace => workspace.workspaceId === 'fx-ws-fixture')).toBe(false)
+    const sessions = await api.sessions.list(req({}))
+    if (!sessions.result.ok) throw new Error('session list failed')
+    expect(sessions.result.value.items.map(session => session.sessionId)).toContain('fx-alpha')
+  })
+
   it('session.create({workspaceId}) lands on the account and unknown ids error', async () => {
     const api = createFixtureApi()
     const abort = new AbortController()