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/objects/CloudFolderUncheckedUpdateInput.schema.ts

@@ -12,6 +12,7 @@ const makeSchema = () => z.object({
   userId: z.union([z.number().int(), z.lazy(() => IntFieldUpdateOperationsInputObjectSchema)]).optional(),
   name: z.union([z.string(), z.lazy(() => StringFieldUpdateOperationsInputObjectSchema)]).optional(),
   parentId: z.union([z.number().int(), z.lazy(() => NullableIntFieldUpdateOperationsInputObjectSchema)]).optional().nullable(),
+  patientId: z.union([z.number().int(), z.lazy(() => NullableIntFieldUpdateOperationsInputObjectSchema)]).optional().nullable(),
   createdAt: z.union([z.coerce.date(), z.lazy(() => DateTimeFieldUpdateOperationsInputObjectSchema)]).optional(),
   updatedAt: z.union([z.coerce.date(), z.lazy(() => DateTimeFieldUpdateOperationsInputObjectSchema)]).optional(),
   children: z.lazy(() => CloudFolderUncheckedUpdateManyWithoutParentNestedInputObjectSchema).optional(),