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/commit.tsx

@@ -0,0 +1,94 @@
+"use client";
+
+import {
+  Commit,
+  CommitActions,
+  CommitAuthor,
+  CommitAuthorAvatar,
+  CommitContent,
+  CommitCopyButton,
+  CommitFile,
+  CommitFileAdditions,
+  CommitFileChanges,
+  CommitFileDeletions,
+  CommitFileIcon,
+  CommitFileInfo,
+  CommitFilePath,
+  CommitFileStatus,
+  CommitFiles,
+  CommitHash,
+  CommitHeader,
+  CommitInfo,
+  CommitMessage,
+  CommitMetadata,
+  CommitSeparator,
+  CommitTimestamp,
+} from "@/components/ai-elements/commit";
+
+const handleCopy = () => {
+  console.log("Copied hash!");
+};
+
+const hash = "a1b2c3d4e5f6g7h8i9j0k1l2m3n4o5p6q7r8s9t0";
+const timestamp = new Date(Date.now() - 1000 * 60 * 60 * 2);
+
+const files = [
+  {
+    additions: 150,
+    deletions: 0,
+    path: "src/auth/login.tsx",
+    status: "added" as const,
+  },
+  {
+    additions: 45,
+    deletions: 0,
+    path: "src/auth/logout.tsx",
+    status: "added" as const,
+  },
+  {
+    additions: 23,
+    deletions: 8,
+    path: "src/lib/session.ts",
+    status: "modified" as const,
+  },
+];
+
+const Example = () => (
+  <Commit>
+    <CommitHeader>
+      <CommitAuthor>
+        <CommitAuthorAvatar initials="HB" />
+      </CommitAuthor>
+      <CommitInfo>
+        <CommitMessage>feat: Add user authentication flow</CommitMessage>
+        <CommitMetadata>
+          <CommitHash>{hash.slice(0, 7)}</CommitHash>
+          <CommitSeparator />
+          <CommitTimestamp date={timestamp} />
+        </CommitMetadata>
+      </CommitInfo>
+      <CommitActions>
+        <CommitCopyButton hash={hash} onCopy={handleCopy} />
+      </CommitActions>
+    </CommitHeader>
+    <CommitContent>
+      <CommitFiles>
+        {files.map((file) => (
+          <CommitFile key={file.path}>
+            <CommitFileInfo>
+              <CommitFileStatus status={file.status} />
+              <CommitFileIcon />
+              <CommitFilePath>{file.path}</CommitFilePath>
+            </CommitFileInfo>
+            <CommitFileChanges>
+              <CommitFileAdditions count={file.additions} />
+              <CommitFileDeletions count={file.deletions} />
+            </CommitFileChanges>
+          </CommitFile>
+        ))}
+      </CommitFiles>
+    </CommitContent>
+  </Commit>
+);
+
+export default Example;