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/queue/Filter by Status - Pending.bru

@@ -0,0 +1,71 @@
+meta {
+  name: Filter by Status - Pending
+  type: http
+  seq: 3
+}
+
+docs {
+  Filter queue items by status - show only pending items.
+
+  **Endpoint**: GET /queue/items?status=pending
+  **Auth**: Required (Bearer token)
+
+  ## Query Parameters
+
+  | Parameter | Type | Required | Description |
+  |-----------|------|-----------|-------------|
+  | status | string | Yes | Status filter: pending, processing, completed, failed |
+
+  ## Response Fields
+
+  | Field | Type | Description |
+  |-------|------|-------------|
+  | items | array | List of queue items with pending status |
+  | total | int | Total matching items |
+
+  ## Example Request
+
+  ```
+  GET /queue/items?status=pending
+  ```
+
+  ## Example Response
+
+  ```json
+  {
+    "items": [...],
+    "total": 15
+  }
+  ```
+
+  ## Error Responses
+
+  | Code | Description |
+  |------|-------------|
+  | 401 | Unauthorized |
+  | 500 | Internal server error |
+
+  ## Notes
+
+  - Only returns items with the specified status
+}
+
+get {
+  url: {{base_url}}/queue/items?status=pending
+  body: none
+  auth: inherit
+}
+
+  token: {{jwt_token}}
+}
+
+tests {
+  test("status must be 200", function() {
+    expect(res.status).to.eql(200);
+  });
+}
+
+settings {
+  encodeUrl: true
+  timeout: 0
+}