feat: mid-session status updates — ticket notes, client updates, email drafts

Engineers can now generate AI-powered status updates during active FlowPilot
sessions and after resolve/escalate. Three audiences (Ticket Notes, Client
Update, Email Draft) with Quick/Detailed length options. Copy to clipboard
with one click. Client names auto-inserted from intake/PSA context.

Backend: new endpoint POST /ai-sessions/{id}/status-update with audience-aware
system prompts. Frontend: StatusUpdateModal with 2-step selection flow,
Share Update button in action bar, Share Resolution/Escalation on completed
sessions. Also updates Solutions Library spec with Community tier design.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/api/aiSessions.ts

@@ -13,6 +13,8 @@ import type {
   AISessionSearchResult,
   SimilarSession,
   PickupSessionRequest,
+  StatusUpdateRequest,
+  StatusUpdateResponse,
 } from '@/types/ai-session'
 
 export const aiSessionsApi = {
@@ -136,6 +138,14 @@ export const aiSessionsApi = {
     })
     return response.data
   },
+
+  async generateStatusUpdate(sessionId: string, data: StatusUpdateRequest): Promise<StatusUpdateResponse> {
+    const response = await apiClient.post<StatusUpdateResponse>(
+      `/ai-sessions/${sessionId}/status-update`,
+      data
+    )
+    return response.data
+  },
 }
 
 export default aiSessionsApi