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/Delete Conflict.bru

@@ -7,27 +7,44 @@ meta {
 delete {
   url: {{baseUrl}}/api/conflicts/{{conflict_id}}
   body: none
-  auth: bearer
+  auth: inherit
 }
 
-headers: {
+headers {
   Authorization: Bearer {{token}}
 }
 
-docs: {
-  Deletes a specific conflict record.
-  
-  Path Parameters:
-  - conflict_id: UUID of the conflict to delete
-  
-  Use this when:
-  - A conflict was created in error
-  - You want to dismiss a conflict without resolving it
-  - The conflict is no longer relevant
-  
-  Response: 204 No Content on success
-  
-  Note: This permanently removes the conflict record.
-  Consider resolving the conflict instead if you want to
-  maintain an audit trail of what happened.
+settings {
+  encodeUrl: true
+  timeout: 0
+}
+
+docs {
+  ## Delete Conflict
+
+  Permanently deletes a specific conflict record from the system.
+
+  **Method:** DELETE
+
+  **Endpoint:** /api/conflicts/{conflict_id}
+
+  **Authentication:** Bearer token
+
+  **Path Parameters:**
+  - `conflict_id` (string): Conflict UUID to delete
+
+  **Response:** 204 No Content on success
+
+  **Status Codes:**
+  - 204: Success - conflict deleted
+  - 401: Unauthorized
+  - 404: Conflict not found
+  - 500: Internal server error
+
+  **Use Cases:**
+  - Conflict was created in error
+  - Dismissing a conflict without resolving it
+  - Conflict is no longer relevant (e.g., book deleted)
+
+  **Note:** This permanently removes the conflict record with no undo option. Consider resolving the conflict instead if you want to maintain an audit trail of what happened.
 }