feat: clinic-wide AI (analytics/earnings/inventory + invoice-from-file),

real Live card, persistent chat history

Analytics & earnings:
- Analytics now carries real money computed from invoices (billed/paid/
  outstanding + by-month); new Earnings section on the Analysis page drawn with
  the project's Bklit chart components (shared EarningsChart).

AI agent reaches the whole clinic:
- new read tools getClinicInfo / getAnalytics / listInventory render clinic,
  analytics (with a Bklit earnings chart) and inventory cards in chat
- proposeInvoice turns an uploaded purchase/medication list into an invoice
  (new "invoice" action-preview kind → createInvoice); invoices/appointments
  auto-create/link a patient (ensurePatient) so they hit the Patients page

Live card:
- plots real data — patients checked in today — via GET /api/analytics/live
  (polled); value pill clamped and margins widened so nothing spills the card

Persistent AI chat history (Claude-style):
- ai_chat_threads + ai_chat_messages (migration 0016); per-user, org-scoped
  thread CRUD under /api/chat/threads
- chat panel owns a thread id, loads /?thread=<id>, and auto-saves after each
  exchange; sidebar lists past chats (open/delete), "New chat" starts fresh

Verified with backend typecheck + frontend tsc + next build.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/lib/ai-chat.ts

@@ -1,6 +1,8 @@
 import type { UIMessage } from "ai";
 
+import type { Analytics } from "@/lib/analytics";
 import type { Appointment } from "@/lib/appointments";
+import type { InventoryItem } from "@/lib/inventory";
 import type { Lab, Patient, Trend } from "@/lib/patients";
 import type { Prescription } from "@/lib/prescriptions";
 import type { Task } from "@/lib/tasks";
@@ -39,10 +41,22 @@ export type StepData = {
 export type AppointmentListData = { appointments: Appointment[] };
 export type TaskListData = { tasks: Task[] };
 export type PrescriptionListData = { prescriptions: Prescription[] };
+export type InventoryListData = { items: InventoryItem[] };
+
+// Clinic-wide read cards.
+export type ClinicCardData = {
+  name: string;
+  slug: string | null;
+  createdAt: string | null;
+};
 
 // An add proposed by the agent, awaiting one-click clinician approval. `record`
 // is the validated, ready-to-commit input for the matching create endpoint.
-export type ActionPreviewKind = "appointment" | "task" | "prescription";
+export type ActionPreviewKind =
+  | "appointment"
+  | "task"
+  | "prescription"
+  | "invoice";
 export type ActionPreviewData = {
   token: string;
   kind: ActionPreviewKind;
@@ -61,6 +75,9 @@ export type TemetroDataParts = {
   appointmentList: AppointmentListData;
   taskList: TaskListData;
   prescriptionList: PrescriptionListData;
+  inventoryList: InventoryListData;
+  clinicCard: ClinicCardData;
+  analyticsCard: Analytics;
   actionPreview: ActionPreviewData;
 };