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/library/Update Scan Settings.yml

@@ -0,0 +1,38 @@
+info:
+  name: Update Scan Settings
+  type: http
+  seq: 1
+http:
+  method: PUT
+  url: '{{base_url}}/api/library/scan-settings'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"scan_frequency_minutes\": 60,\n    \"auto_scan_enabled\":\
+      \ true"
+  headers:
+  - key: Content-Type
+    value: application/json
+
+docs: |-
+  ## Update Scan Settings
+    
+    Updates the user's media scanning settings.
+    
+    **Method:** PUT
+    
+    **Endpoint:** /api/library/scan-settings
+    
+    **Authentication:** Required
+    
+    **Request Body:**
+    - `scan_frequency_minutes` (integer, required): Minutes between automatic scans (15-1440)
+    - `auto_scan_enabled` (boolean, required): Whether automatic scanning is enabled
+    
+    **Response:**
+    - `message` (string): Success message
+    
+    **Status Codes:**
+    - 200: Success
+    - 400: Invalid settings
+    - 401: Unauthorized