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/kobo/scenarios/link-book.yml

@@ -0,0 +1,43 @@
+info:
+  name: Link Unlinked Book - Manual Resolution
+  type: http
+  seq: 5
+http:
+  method: POST
+  url: '{{base_url}}/api/sync/link-book'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"unlinked_book_id\": \"{{unlinked_book_id"
+  headers:
+  - key: Authorization
+    value: Bearer {{user_token
+
+docs: |-
+  ## Link Unlinked Book - Manual Resolution
+  
+    Manually links an unlinked book to a media item in the library.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/sync/link-book
+  
+    **Authentication:** Bearer token
+  
+    **Request Body:**
+    - `unlinked_book_id` (string): Unlinked book UUID
+    - `media_item_id` (string): Media item UUID to link to
+    - `confidence_score` (number): Match confidence (0-1, 1.0 for manual)
+  
+    **Response:**
+    - `status` (string): Link status (linked)
+    - `unlinked_book_id` (string): Unlinked book UUID
+    - `media_item_id` (string): Media item UUID
+    - `message` (string): Success message
+  
+    **Status Codes:**
+    - 200: Success - book linked
+    - 400: Invalid request
+    - 401: Unauthorized
+    - 404: Book or media item not found
+    - 500: Internal server error