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/notes/Create Media Note.yml

@@ -0,0 +1,37 @@
+info:
+  name: Create Media Note
+  type: http
+  seq: 2
+http:
+  method: POST
+  url: '{{base_url}}/api/media-items/{{media_item_id}}/notes'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"content\": \"This is a test note about this media item.\"\
+      ,\n    \"position\": \"page:45\""
+
+docs: |-
+  ## Create Media Note
+    
+    Creates a new note for a specific media item.
+    
+    **Method:** POST
+    
+    **Endpoint:** /api/media-items/:id/notes
+    
+    **Path Parameters:**
+    - `id` (string): Media item ID
+    
+    **Request Body:**
+    - `content` (string): Note content (required, 1-10000 chars)
+    - `position` (string): Optional position reference (max 100 chars)
+    
+    **Response:**
+    - Note object with all fields including generated ID and timestamps
+    
+    **Status Codes:**
+    - 201: Created
+    - 400: Invalid request
+    - 401: Unauthorized
+    - 404: Media item not found