refactor(gui): projection keys import the domain packages' client outlets (single source)

The consumer-side restated declare-merges retire (user ruling: one home per
projection key): TodoPanel imports the todos merge and TodoItem through
@deepseek-ai/dsh-tool-todo/client, and the manager takes the title merge
through @deepseek-ai/dsh-session-title/client — both pure-type outlets
re-exporting the domain's single-source types.ts, so no host value import or
Context merge enters the client program (type-only edges, exempt from the
plugin value-import ban). Workspace deps and tsconfig references added.
Also aligns the fixture's empty-log tail block with the host convention
(asOfSeq -1 with empty values, block always present on tail requests).

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

@@ -652,9 +652,9 @@ export function createFixtureApi(options: FixtureOptions = {}): ApiProxy {
         // Snapshot at request time, deliver after the transit delay (mirrors a real host under latency).
         const page = pageOf(log, request.payload.beforeSeq, request.payload.maxMessages ?? 50)
         // Tail page carries the projections block (host parallel: one consistent
-        // cut over the registered units, asOfSeq = window tail seq); an empty
-        // log has no cut to stamp, so the block stays absent.
-        const projections = request.payload.beforeSeq === undefined && log.length > 0
+        // cut over the registered units; asOfSeq = window tail seq, -1 on an
+        // empty log — the host's session.seq-1 convention).
+        const projections = request.payload.beforeSeq === undefined
           ? { asOfSeq: log.length - 1, values: projectionValuesOf(log) }
           : undefined
         const doomed = failNextHistory

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

@@ -65,10 +65,11 @@ describe('createFixtureApi', () => {
     const clamped = await api.sessions.history(req({ sessionId: sid('fx-alpha'), beforeSeq: -5, maxMessages: 10 }))
     if (!clamped.result.ok) throw new Error('clamped failed')
     expect(clamped.result.value.events).toEqual([])
-    // Unknown session: empty page, not an error (history of a bare id).
+    // Unknown session: empty page, not an error (history of a bare id). The
+    // tail block still rides it — empty-log cut at -1, the host convention.
     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, projections: { asOfSeq: -1, values: {} } })
   })
 
   it('emits the todo/write snapshot at the real tool boundary: between tool/call and tool/result, timestamps monotonic', async () => {

packages/client/runtime/package.json

@@ -37,6 +37,7 @@
     "@deepseek-ai/dsh-llm": "workspace:^",
     "@deepseek-ai/dsh-session": "workspace:^",
     "@deepseek-ai/dsh-session-projection": "workspace:^",
+    "@deepseek-ai/dsh-session-title": "workspace:^",
     "immer": "^10.1.1",
     "react": "^18.2.0",
     "zustand": "~4.4.7"

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

@@ -9,6 +9,10 @@ import { transportError } from '@deepseek-ai/dsh-host-apiproxy/api'
 import { mergeOrderedBaseline } from '../ordered-baseline.ts'
 import type { SessionListEntry, TitledSessionSummary } from './lineage.ts'
 import { flattenLineage } from './lineage.ts'
+// Type-only merge edge: the title domain's client-namespace outlet declares
+// the 'title' projection key this manager projects into list rows (and any
+// useProjection('title') consumer reads). Zero value imports by construction.
+import type {} from '@deepseek-ai/dsh-session-title/client'
 import { Notifier } from './notifier.ts'
 import { ProjectionValueStore } from './projection-store.ts'
 import { Session } from './session.ts'

packages/client/runtime/tsconfig.json

@@ -26,6 +26,9 @@
     {
       "path": "../../session-projection/session-projection"
     },
+    {
+      "path": "../../session-title/session-title"
+    },
     {
       "path": "../../llm/llm"
     },

packages/client/ui-conversation/package.json

@@ -50,6 +50,7 @@
   "devDependencies": {
     "@deepseek-ai/dsh-client-runtime": "workspace:^",
     "@deepseek-ai/dsh-session-projection": "workspace:^",
+    "@deepseek-ai/dsh-tool-todo": "workspace:^",
     "@deepseek-ai/dsh-client-ui-layout": "workspace:^",
     "@deepseek-ai/dsh-client-ui-primitives": "workspace:^",
     "@deepseek-ai/dsh-client-ui-slash": "workspace:^",

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

@@ -8,18 +8,11 @@
 import { useId, useState } from 'react'
 import type { Context } from 'cordis'
 import type { PropsRuntime } from '@deepseek-ai/dsh-client-ui-slots'
-import type { TodoItem } from '@deepseek-ai/dsh-client-runtime/client'
-
-// Client-side view of the todos projection key. The authoritative merge lives
-// with the domain host unit (tool-todo), whose program never overlaps the
-// client's, so this consumer restates the identical member through the same
-// pure-type outlet (any program holding both merges rejects drift).
-declare module '@deepseek-ai/dsh-session-projection/types' {
-  interface SessionProjectionMap {
-    /** The agent's current whole todo list (latest `todo/write` snapshot), or `null` before the first write. */
-    todos: TodoItem[] | null
-  }
-}
+// The domain's client-namespace pure-type outlet: one import edge delivers
+// the `todos` projection-key merge (single source, no consumer-side restated
+// declare) and the payload type. Type-only by construction — the outlet is
+// free of host value imports, so no host Context merge enters this program.
+import type { TodoItem } from '@deepseek-ai/dsh-tool-todo/client'
 import { IconChevronDownOutline14, IconChevronUpOutline14 } from '@deepseek-ai/dsh-client-ui-primitives'
 import css from './TodoPanel.module.css'
 

packages/client/ui-conversation/tsconfig.json

@@ -26,6 +26,9 @@
     {
       "path": "../../session-projection/session-projection"
     },
+    {
+      "path": "../../todo/tool-todo"
+    },
     {
       "path": "../ui-slash"
     },