feat: add per-patient Local folder in Documents page backed by Cloud Storage

- Documents page shows a "Local Folder" card for each selected patient
  with an "Open in Cloud Storage" button that deep-links to their folder
- Cloud Storage page reads ?folderId URL param on mount and auto-opens
  the folder panel for seamless navigation from Documents
- Backend: GET /api/cloud-storage/patient-folder/:patientId endpoint
  that idempotently gets or creates a top-level CloudFolder per patient
- CloudFolder schema gains optional patientId field linked to Patient
- Disk directories for cloud storage folders now use the folder's name
  (e.g. "Xiaohui Wang/") instead of the opaque "folder-{id}/" path

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/db/shared/schemas/variants/input/CloudFolder.input.ts

@@ -5,9 +5,11 @@ export const CloudFolderInputSchema = z.object({
     userId: z.number().int(),
     name: z.string(),
     parentId: z.number().int().optional().nullable(),
+    patientId: z.number().int().optional().nullable(),
     parent: z.unknown().optional().nullable(),
     children: z.array(z.unknown()),
     user: z.unknown(),
+    patient: z.unknown().optional().nullable(),
     files: z.array(z.unknown()),
     createdAt: z.date(),
     updatedAt: z.date()

packages/db/shared/schemas/variants/input/Patient.input.ts

@@ -31,7 +31,8 @@ export const PatientInputSchema = z.object({
     payment: z.array(z.unknown()),
     communications: z.array(z.unknown()),
     documents: z.array(z.unknown()),
-    conversation: z.unknown().optional().nullable()
+    conversation: z.unknown().optional().nullable(),
+    cloudFolders: z.array(z.unknown())
 }).strict();
 
 export type PatientInputType = z.infer<typeof PatientInputSchema>;