feat(consultation): unify server-distributed agents without fixed roles

src/pages/Chat/use-teacher-companion.ts

@@ -83,9 +83,9 @@ export function useTeacherCompanion(options: Options) {
       setState((current) => ({ ...current, loading: false }));
       return () => { alive = false; };
     }
-    const base = teacherTopicsPath(projectId, '', 'teacher');
+    const base = teacherTopicsPath(projectId);
     const loadConfig = async () => {
-      const config = await teacherApi.config('teacher');
+      const config = await teacherApi.config();
       if (alive) setState((current) => ({ ...current, definition: config.definition, enabled: config.enabled, loading: false }));
       return config;
     };
@@ -98,7 +98,7 @@ export function useTeacherCompanion(options: Options) {
         const topic = await teacherApi.read(base, topics.lastSelectedTopicId);
         if (alive && (!latest.current.state.topic || latest.current.state.topic.id === topic.id)) noteTopic(topic);
       } catch {
-        if (alive) setState((current) => ({ ...current, loading: false, error: '老师暂时没连上，稍后再来看看。' }));
+        if (alive) setState((current) => ({ ...current, loading: false, error: '智能体暂时没连上，稍后再来看看。' }));
       }
     })();
     // Keep the deadline across Renderer reloads/project switches, but allow a
@@ -109,6 +109,7 @@ export function useTeacherCompanion(options: Options) {
     writeLocal(storageKey + ':last-attempt', lastAttempt);
     const check = async () => {
       const { options: current, state: currentState } = latest.current;
+      if (currentState.topic?.role === 'friend') return;
       if (!alive || inFlight.current || document.visibilityState !== 'visible' || currentState.loading) return;
       // A dropped event stream must not leave a completed reply stuck as thinking.
       if (currentState.topic?.requests.some((request) => ['preparing', 'running'].includes(request.status))) {
@@ -146,7 +147,7 @@ export function useTeacherCompanion(options: Options) {
       } catch (error) {
         if (!alive) return;
         if (error instanceof AppError && typeof error.details?.status === 'number' && error.details.status >= 400 && error.details.status < 500 && error.details.status !== 408) writeLocal(storageKey + ':pending', null);
-        setState((value) => ({ ...value, error: '老师这次没连上，可以点头像找老师聊聊。' }));
+        setState((value) => ({ ...value, error: '智能体这次没连上，可以点头像找智能体聊聊。' }));
       } finally {
         if (alive) inFlight.current = false;
       }
@@ -167,10 +168,10 @@ export function useTeacherCompanion(options: Options) {
   const topicId = topic?.id;
   const topicProjectId = topic?.projectId;
   useEffect(() => {
-    if (!topicId || !topicProjectId) return;
+    if (!topicId || !topicProjectId || topic?.role === 'friend') return;
     let alive = true;
     let stream: EventSource | undefined;
-    const base = teacherTopicsPath(topicProjectId, '', 'teacher');
+    const base = teacherTopicsPath(topicProjectId);
     void teacherApi.events(base, topicId).then((source) => {
       if (!alive) { source.close(); return; }
       stream = source;
@@ -180,18 +181,19 @@ export function useTeacherCompanion(options: Options) {
       });
     }).catch(() => { /* The consultation can still be opened and reloaded. */ });
     return () => { alive = false; stream?.close(); };
-  }, [topicId, topicProjectId, noteTopic]);
+  }, [topicId, topicProjectId, topic?.role, noteTopic]);
 
   const last = topic?.requests.at(-1);
   const invitation = unreadInvitation({ topic, seen: state.seen });
   const visibleState = stateScope.current === scope ? state : { definition: null, enabled: false, loading: true, topic: null, seen: [], welcomeDismissed: true, error: '' };
   // This is the published greeting, not a fabricated project assessment.
-  const welcome = !visibleState.loading && visibleState.enabled && !visibleState.welcomeDismissed
-    ? visibleState.definition?.welcome_message.trim() || null : null;
+  const selectedDefinition = topic?.definition ?? visibleState.definition;
+  const welcome = topic?.role !== 'friend' && !visibleState.loading && visibleState.enabled && !visibleState.welcomeDismissed
+    ? selectedDefinition?.welcome_message.trim() || null : null;
   return {
     ...visibleState,
-    error: last?.intent === 'check-in' && ['failed', 'interrupted'].includes(last.status) ? '老师这次没连上，可以点头像找老师聊聊。' : visibleState.error,
-    definition: topic?.definition ?? visibleState.definition,
+    error: last?.intent === 'check-in' && ['failed', 'interrupted'].includes(last.status) ? '智能体这次没连上，可以点头像找智能体聊聊。' : visibleState.error,
+    definition: selectedDefinition,
     topic,
     invitation,
     welcome,