refactor(web): consume owner remote events directly

packages/client/ui-agent-preset/README.md

@@ -18,7 +18,7 @@ A session that has started is refused rather than queued: the host answers `agen
 
 ## The session-header label
 
-A third surface, beside the session title: the preset THIS session runs, as static chrome. A control there would promise a switch the host refuses outright. It reads the preset from the session's own summary — a resumed session runs what it was created with, not today's default — and resolves the display name against the same roster the General row reads.
+A third surface, beside the session title: the preset THIS session runs, as static chrome. A control there would promise a switch the host refuses outright. It reads the preset from the session's own summary and resolves the display name against the same roster the General row reads. Forwarded `agent-preset/selected` owner events fold committed blank-session switches into that shared summary in every tab; the initiating tab may already have applied the RPC echo, and the merge is idempotent.
 
 ## What it reads and writes
 

packages/client/ui-agent-preset/README.zh.md

@@ -18,7 +18,7 @@ chip 以部署默认值打开，其选择是**暂存**的——该界面先于
 
 ## 会话标题旁的标签
 
-第三个表层，位于会话标题旁：**本会话**所运行的 preset，作为静态装饰呈现。在那里放一个控件，等于承诺一次宿主会断然拒绝的切换。它从会话自身的摘要读取 preset——被恢复的会话运行的是它创建时的那一份，而非今天的默认值——并在 General 行所读的同一份名单上解析显示名称。
+第三个表层，位于会话标题旁：**本会话**所运行的 preset，作为静态装饰呈现。在那里放一个控件，等于承诺一次宿主会断然拒绝的切换。它从会话自身的摘要读取 preset，并在 General 行所读的同一份名单上解析显示名称。转发的 owner 事件 `agent-preset/selected` 会在每个标签页中把已经提交的空会话切换折进这份共享摘要；发起方标签页可能已经采用 RPC 回执，而合并是幂等的。
 
 ## 它读什么、写什么
 

packages/client/ui-agent-preset/src/client/index.ts

@@ -141,6 +141,11 @@ export function apply(ctx: ClientContext): void {
         if (ns !== AGENT_PRESET_SETTINGS_NS) return
         void seat.load()
       })
+      // Every tab folds the committed preset into the shared session row; the
+      // initiating tab may already have applied the RPC echo, which is idempotent.
+      const presetSelected = scope.remote.$on('agent-preset/selected', (sessionId, agentPreset) => {
+        scope.sessions.noteAgentPreset(sessionId, agentPreset)
+      })
       // Authoring writes a FILE, not a setting, so nothing on the wire
       // announces it — without this the screen that starts the next session
       // keeps offering the roster as it stood when the chip first loaded, and
@@ -173,6 +178,7 @@ export function apply(ctx: ClientContext): void {
       return () => {
         stop()
         settingsMoved()
+        presetSelected()
         rosterReaders.delete(readRoster)
         creatorDraft = undefined
         chip()

packages/client/ui-agent-preset/tests/apply.spec.ts

@@ -165,6 +165,12 @@ function sessionsDouble(state: {
         return () => listeners.delete(fn)
       },
     },
+    noteAgentPreset: (sessionId: string, agentPreset: string) => {
+      const summary = state.byId[sessionId]
+      if (summary === undefined || summary.agentPreset === agentPreset) return
+      summary.agentPreset = agentPreset
+      for (const fn of listeners) fn()
+    },
     /** Push a list change the way the runtime's store does. */
     notify: () => { for (const fn of listeners) fn() },
   }
@@ -347,6 +353,24 @@ describe('ui-agent-preset apply', () => {
     conversation()
   })
 
+  it('folds a remote preset commit into the shared session row', async () => {
+    const { ctx, slots } = await bench()
+    declareRoot(slots)
+    declareConversation(slots)
+    ctx.provide('conversation', {} as never)
+    const state = {
+      current: 's1',
+      byId: { s1: { id: 's1', blank: true, agentPreset: 'standard' } },
+    }
+    ctx.provide('sessions', sessionsDouble(state) as never)
+    ctx.provide('workspaces', workspacesDouble() as never)
+    await ctx.plugin({ inject: [...inject, 'conversation', 'sessions', 'workspaces'], apply }).await()
+
+    ctx.remote.$dispatch('agent-preset/selected', ['s1', 'minimal'])
+
+    expect(state.byId.s1.agentPreset).toBe('minimal')
+  })
+
   it('offers a just-authored preset on the new-session chip', async () => {
     const { ctx, slots } = await bench()
     declareRoot(slots)