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/Refresh Token.yml

@@ -0,0 +1,44 @@
+info:
+  name: Refresh Access Token
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{base_url}}/api/auth/refresh'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"refresh_token\": \"{{refresh_token"
+  headers:
+  - key: Content-Type
+    value: application/json
+
+docs: |-
+  ## Refresh Access Token
+  
+    Refreshes an access token using a valid refresh token. Returns a new access token with 1-hour expiration.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/auth/refresh
+  
+    **Authentication:** Not required (refresh token is in request body)
+  
+    **Request Body:**
+    - `refresh_token` (string): Valid refresh token UUID
+  
+    **Response:**
+    - `access_token` (string): New JWT access token (1 hour expiration)
+    - `token_type` (string): Token type (usually "Bearer")
+    - `expires_in` (number): Token lifetime in seconds (3600)
+  
+    **Status Codes:**
+    - 200: Success - new access token generated
+    - 401: Unauthorized - invalid or expired refresh token
+  
+    **Example Response (Success):**
+    ```json
+    {
+      "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
+      "token_type": "Bearer",
+      "expires_in": 3600