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/sidecar/Update System Configuration.yml

@@ -0,0 +1,42 @@
+info:
+  name: Update System Configuration
+  type: http
+  seq: 4
+http:
+  method: PUT
+  url: '{{base_url}}/api/system/config'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"base_url\": \"https://bookhoard.example.com\",\n    \"opds_base_url\"\
+      : \"https://bookhoard.example.com/opds\",\n    \"api_base_url\": \"https://bookhoard.example.com/api\""
+  headers:
+  - key: Authorization
+    value: Bearer {{admin_token
+
+docs: |-
+  ## Update System Configuration
+  
+    Updates system-wide configuration settings for the Bookhoard instance.
+  
+    **Method:** PUT
+  
+    **Endpoint:** /api/system/config
+  
+    **Authentication:** Bearer token (admin only)
+  
+    **Request Body:**
+    - `base_url` (string): Base URL for the instance
+    - `opds_base_url` (string): OPDS endpoint base URL
+    - `api_base_url` (string): API endpoint base URL
+  
+    **Response:**
+    - `status` (string): Update status
+    - `config` (object): Updated configuration
+  
+    **Status Codes:**
+    - 200: Success
+    - 400: Invalid configuration
+    - 401: Unauthorized
+    - 403: Forbidden (admin only)
+    - 500: Internal server error