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 (SHA-256).yml

@@ -0,0 +1,51 @@
+info:
+  name: KOReader Sync Progress - SHA-256
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{base_url}}/api/v1/koreader/sync/progress'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"sync_mode\": \"immediate\",\n    \"books\": [\n      {\n \
+      \       \"uuid\": \"{{book_uuid"
+  headers:
+  - key: Authorization
+    value: Bearer {{koreader_device_token
+
+docs: |-
+  ## KOReader Sync Progress - SHA-256
+  
+    Synchronizes reading progress from a KOReader device using SHA-256 book hash for identification.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/v1/koreader/sync/progress
+  
+    **Authentication:** Bearer token (KOReader device token)
+  
+    **Request Body:**
+    - `sync_mode` (string): Sync mode (immediate, deferred)
+    - `books` (array): Array of book progress objects
+      - `uuid` (string): Book UUID
+      - `sha256` (string): SHA-256 hash of book file for identification
+      - `file_path` (string): Path to book file on device
+      - `percentage` (number): Progress percentage (0-1)
+      - `chapter` (number): Current chapter
+      - `page` (number): Current page
+      - `total_pages` (number): Total pages
+      - `epubcfi` (string): EPUB location
+      - `last_read` (string): ISO 8601 timestamp
+      - `title` (string): Book title
+      - `authors` (array): List of authors
+  
+    **Response:**
+    - `sync_status` (string): Sync status
+    - `books_synced` (number): Number of books synced
+  
+    **Status Codes:**
+    - 200: Success
+    - 202: Accepted - processing
+    - 401: Unauthorized
+    - 500: Internal server error