feat: AI-added records save with placeholders + "Added by AI" provenance

Stop blocking AI imports/proposals on missing non-critical fields. Records
the chat agent drafts now save with safe placeholders, auto-generated file
numbers, and a source="ai" marker that surfaces an "Added by AI" badge so a
clinician can review/edit them later.

Backend:
- add `source` (manual|ai) column to patients/appointments/prescriptions
  (migration 0014) + canonical types, services, validation schemas
- relax patient/appointment validation: empty file number allowed, demographic
  + type/provider/initials fall back to placeholders (initials derived from name)
- patients.generateFileNumber() auto-assigns an MRN when one is missing
- proposeAppointment accepts a name when no file number resolves; AI commits +
  /api/ai/import stamp source="ai"

Frontend:
- `source` on Appointment/Patient/Prescription types; AI commits send source="ai"
- reusable <AiBadge> shown on the Patients table/detail and prescriptions list

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

.agents/skills/ai-elements/scripts/test-results-basic.tsx

@@ -0,0 +1,27 @@
+"use client";
+
+import {
+  TestResults,
+  TestResultsDuration,
+  TestResultsHeader,
+  TestResultsSummary,
+} from "@/components/ai-elements/test-results";
+
+const Example = () => (
+  <TestResults
+    summary={{
+      duration: 3500,
+      failed: 2,
+      passed: 10,
+      skipped: 1,
+      total: 13,
+    }}
+  >
+    <TestResultsHeader>
+      <TestResultsSummary />
+      <TestResultsDuration />
+    </TestResultsHeader>
+  </TestResults>
+);
+
+export default Example;