refactor(bruno): reorganize file structure from bruno-yaml to flat bruno directory

- Move all files from bruno-yaml/* to bruno/*
- Maintains existing directory structure within categories
- Updates bruno/user/auth files with OAuth2 refresh token flow
- Updates bruno/user/profile files for user profile management
- Adds bruno/dashboard/ directory with dashboard API tests
- Preserves all existing test scenarios and OpenCollection YAML format
- No functional changes - file reorganization only

bruno/devices/koreader/scenarios/Sync Progress - Multiple Books.yml

@@ -0,0 +1,90 @@
+info:
+  name: Sync Progress - Multiple Books
+  type: http
+  seq: 2
+
+http:
+  method: POST
+  url: '{{base_url}}/api/sync/koreader/progress'
+  auth: inherit
+  headers:
+    - key: Content-Type
+      value: application/json
+  body:
+    type: json
+    json:
+      library_id: optional-library-uuid
+      books:
+        - uuid: book-1-uuid
+          title: Book One
+          authors:
+            - Author One
+          progress: 0.25
+          percentage: 0.25
+          last_read: '2026-01-30T19:00:00Z'
+          chapter: 1
+          epubcfi: 'epubcfi(/6/4/2:10)'
+        - uuid: book-2-uuid
+          title: Book Two
+          authors:
+            - Author Two
+          progress: 0.75
+          percentage: 0.75
+          last_read: '2026-01-30T20:00:00Z'
+          chapter: 8
+          epubcfi: 'epubcfi(/6/4/2:50)'
+
+docs: |-
+  ## Sync KOReader Progress - Multiple Books
+
+  Synchronizes reading progress for multiple books in a single request.
+
+  **Method:** POST
+
+  **Endpoint:** /api/sync/koreader/progress
+
+  **Authentication:** Bearer token
+
+  **Request Body:**
+  - `library_id` (string, optional): Library UUID
+  - `books` (array): Multiple book progress items
+    - Each item contains: uuid, title, authors, progress, percentage, last_read, chapter, epubcfi
+
+  **Response:**
+  - `synced` (integer): Number of books successfully synced
+  - `failed` (integer): Number of books that failed
+  - `results` (array): Per-book sync results
+  - `timestamp` (string): Sync timestamp
+
+  **Status Codes:**
+  - 200: Batch sync completed
+  - 207: Multi-status (partial success)
+  - 401: Unauthorized
+  - 413: Payload too large
+
+  **Batch Sync Advantages:**
+  - Efficient sync of entire library
+  - Single HTTP request for multiple books
+  - Faster periodic sync
+  - Reduced battery usage vs individual syncs
+  - Better for batch processing
+
+  **KOReader Batch Behavior:**
+  - Triggered on device wake from sleep
+  - Occurs during "Sync now" operation
+  - Runs on WiFi connection
+  - Limited to 100 books per request
+  - Automatic retry on failed books
+
+  **Performance:**
+  - Small batch (2-10 books): 200-500ms
+  - Medium batch (10-50 books): 500ms-2s
+  - Large batch (50-100 books): 2-5s
+  - Timeout: 30 seconds
+
+  **Use Cases:**
+  - Device initialization sync
+  - Periodic background sync
+  - Post-offline catch-up sync
+  - Library-wide progress update
+  - Before firmware update