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/conflicts/scenarios/Bulk Dismiss Conflicts.yml

@@ -0,0 +1,49 @@
+info:
+  name: Bulk Dismiss Conflicts
+  type: http
+  seq: 1
+http:
+  method: POST
+  url: '{{base_url}}/api/conflicts/bulk-dismiss'
+  auth: inherit
+  body:
+    type: json
+    jsonBody: "{\n    \"conflict_ids\": [\n      \"{{conflictId1"
+  headers:
+  - key: Content-Type
+    value: application/json
+  - key: Authorization
+    value: Bearer {{authToken
+
+docs: |-
+  ## Bulk Dismiss Conflicts
+  
+    Dismisses multiple sync conflicts without resolving them. This removes them from the conflict list while leaving the data unchanged.
+  
+    **Method:** POST
+  
+    **Endpoint:** /api/conflicts/bulk-dismiss
+  
+    **Authentication:** Bearer token
+  
+    **Request Body:**
+    - `conflict_ids` (array): Array of conflict UUIDs to dismiss
+  
+    **Response:**
+    - `results` (array): Results for each dismissal
+    - `total` (number): Total number of conflicts processed
+    - `success` (number): Number of successfully dismissed conflicts
+    - `failed` (number): Number of failed dismissals
+  
+    **Status Codes:**
+    - 200: Success
+    - 400: Invalid request data
+    - 401: Unauthorized
+    - 403: Forbidden
+    - 404: One or more conflicts not found
+    - 500: Internal server error
+  
+    **Example:**
+    ```json
+    {
+      "conflict_ids": ["uuid-1", "uuid-2"]