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/Server Sync to Kobo.yml

@@ -0,0 +1,53 @@
+info:
+  name: Sync from Bookhoard to Kobo
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{baseURL}}/api/sync/kobo/sync-from-server'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "[\n    {\n      \"ContentId\": \"{{bookUUID"
+  headers:
+  - key: Authorization
+    value: Bearer {{koboToken
+
+docs: |-
+  ## Sync from Bookhoard to Kobo
+  
+    Server-initiated sync pushing progress, bookmarks, and highlights from Bookhoard to Kobo device. Two-way sync endpoint.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/sync/kobo/sync-from-server
+  
+    **Authentication:** Bearer token with Kobo device identification
+  
+    **Headers:**
+    - `x-kobo-device` (string): JSON string containing Kobo device info
+      - `DeviceId`: Kobo device ID
+      - `Model`: Kobo device model
+      - `SerialNumber`: Kobo device serial number
+  
+    **Request Body:** Array of sync data objects
+    - `ContentId` (string): Book UUID
+    - `PercentRead` (number): Reading progress percentage (0-100)
+    - `LastModified` (string): ISO 8601 timestamp
+    - `Bookmarks` (array, optional): Array of bookmark objects
+      - `BookmarkId`: Unique bookmark ID
+      - `ContentId`: Book UUID
+      - `BookmarkText`: Bookmark text/note
+      - `BookmarkType`: Type (bookmark, annotation, etc.)
+      - `BookmarkTitle`: Bookmark title
+    - `Highlights` (array, optional): Array of highlight objects (same structure as bookmarks)
+  
+    **Response:**
+    - Sync result confirmation
+  
+    **Status Codes:**
+    - 200: Success
+    - 401: Unauthorized
+    - 500: Internal server error
+  
+    **Note:** Allows Bookhoard server to push updates to Kobo device, including reading progress, bookmarks, and highlights.