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/user/auth/Logout User.yml

@@ -0,0 +1,40 @@
+info:
+  name: Logout User
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{base_url}}/api/auth/logout'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"refresh_token\": \"{{refresh_token"
+  headers:
+  - key: Content-Type
+    value: application/json
+
+docs: |-
+  ## Logout User
+  
+    Logs out the user by revoking their refresh token. If no refresh token is provided, the request succeeds but no token is revoked.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/auth/logout
+  
+    **Authentication:** Bearer token (optional)
+  
+    **Request Body:**
+    - `refresh_token` (string, optional): Refresh token to revoke
+  
+    **Response:**
+    - `message` (string): Success message
+  
+    **Status Codes:**
+    - 200: Success - user logged out (token revoked if provided)
+    - 401: Unauthorized
+  
+    **Example Response:**
+    ```json
+    {
+      "message": "logged out successfully"