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/results/CloudFolderAggregateResult.schema.ts

@@ -4,9 +4,11 @@ export const CloudFolderAggregateResultSchema = z.object({  _count: z.object({
     userId: z.number(),
     name: z.number(),
     parentId: z.number(),
+    patientId: z.number(),
     parent: z.number(),
     children: z.number(),
     user: z.number(),
+    patient: z.number(),
     files: z.number(),
     createdAt: z.number(),
     updatedAt: z.number()
@@ -14,18 +16,21 @@ export const CloudFolderAggregateResultSchema = z.object({  _count: z.object({
   _sum: z.object({
     id: z.number().nullable(),
     userId: z.number().nullable(),
-    parentId: z.number().nullable()
+    parentId: z.number().nullable(),
+    patientId: z.number().nullable()
   }).nullable().optional(),
   _avg: z.object({
     id: z.number().nullable(),
     userId: z.number().nullable(),
-    parentId: z.number().nullable()
+    parentId: z.number().nullable(),
+    patientId: z.number().nullable()
   }).nullable().optional(),
   _min: z.object({
     id: z.number().int().nullable(),
     userId: z.number().int().nullable(),
     name: z.string().nullable(),
     parentId: z.number().int().nullable(),
+    patientId: z.number().int().nullable(),
     createdAt: z.date().nullable(),
     updatedAt: z.date().nullable()
   }).nullable().optional(),
@@ -34,6 +39,7 @@ export const CloudFolderAggregateResultSchema = z.object({  _count: z.object({
     userId: z.number().int().nullable(),
     name: z.string().nullable(),
     parentId: z.number().int().nullable(),
+    patientId: z.number().int().nullable(),
     createdAt: z.date().nullable(),
     updatedAt: z.date().nullable()
   }).nullable().optional()});