refactor(bruno): migrate API tests to Bruno DSL format

- Convert all existing .bru files from JSON to Bruno DSL format
- Remove obsolete files (conflicts/api.bru, kobo/Kobo Initialization.bru)
- Update auth configuration to use 'inherit' instead of explicit bearer tokens
- Add comprehensive documentation to all test files
- Improve test scripts with proper assertions and error handling

bruno/conflicts/Dismiss All Resolved.bru

@@ -7,29 +7,48 @@ meta {
 post {
   url: {{baseUrl}}/api/conflicts/dismiss-all
   body: none
-  auth: bearer
+  auth: inherit
 }
 
-headers: {
+headers {
   Authorization: Bearer {{token}}
 }
 
-docs: {
-  Deletes all resolved conflicts for the authenticated user.
-  
-  Use this to:
-  - Clean up your conflicts list after reviewing resolutions
-  - Remove old resolved conflicts that are no longer needed
-  - Maintain a clean conflict history
-  
-  Response includes:
-  - deleted: Number of conflict records that were deleted
-  
-  Example response:
+settings {
+  encodeUrl: true
+  timeout: 0
+}
+
+docs {
+  ## Dismiss All Resolved Conflicts
+
+  Deletes all resolved conflicts for the authenticated user, cleaning up the conflict list.
+
+  **Method:** POST
+
+  **Endpoint:** /api/conflicts/dismiss-all
+
+  **Authentication:** Bearer token
+
+  **Response:**
+  - `deleted` (number): Number of conflict records that were deleted
+
+  **Status Codes:**
+  - 200: Success - conflicts deleted
+  - 401: Unauthorized
+  - 500: Internal server error
+
+  **Example Response:**
+  ```json
   {
     "deleted": 5
   }
-  
-  Note: Only resolves conflicts with status "user_resolved"
-  are deleted. Unresolved conflicts are preserved.
+  ```
+
+  **Use Cases:**
+  - Clean up conflicts list after reviewing resolutions
+  - Remove old resolved conflicts no longer needed
+  - Maintain a clean conflict history
+
+  **Note:** Only conflicts with status "user_resolved" or "auto_resolved" are deleted. Unresolved conflicts are preserved.
 }