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/scanner/Stop Scanner.yml

@@ -0,0 +1,32 @@
+info:
+  name: Stop Scanner
+  type: http
+  seq: 3
+http:
+  method: POST
+  url: '{{base_url}}/api/scanner/stop'
+  auth: inherit
+
+docs: |-
+  ## Stop Scanner
+    
+    Stops the currently running media scanner service.
+    
+    **Method:** POST
+    
+    **Endpoint:** /api/scanner/stop
+    
+    **Authentication:** Required (Bearer token)
+    
+    **Response:**
+    - JSON object containing scanner status
+      - `status` (string): Scanner state ("stopped", "idle")
+      - `message` (string): Status message
+      - `stopped_at` (string): Timestamp when scanner stopped
+    
+    **Status Codes:**
+    - 200: Scanner stopped successfully
+    - 401: Unauthorized
+    - 403: Forbidden (insufficient permissions)
+    - 409: Scanner not running
+    - 500: Internal server error