I will evaluate the results in `be_result.txt` based on the instructions in `tmp_be_prompt.txt`.

All backend API tests failed with the error: `Unable to connect to the remote server`. This indicates that the backend server is either not running or the connection configuration is incorrect.

**Analysis:**
- **Status:** FAIL
- **Error Details:** All 8 endpoints (health, auth/me, memos/list, memo/create, search, teams/list, deadlines, agent/chat) returned `FAIL - Unable to connect to the remote server`.
- **Potential Files to Check:**
  - Since the error is a connection failure, the primary issue is likely that the server process is not active. 
  - If the server is running but unreachable, check the environment configuration (e.g., `.env` or port settings) and the main entry point (likely `main.py` or similar in the backend root).
  - Given the files in the `plan` directory, `check_routes.py` or the scripts used to generate `be_result.txt` should be checked to ensure they are targeting the correct URL/port.

To provide a more specific "Python file to fix" as requested, I need to verify the backend's operational state and its source location. I will start by listing the contents of the parent directory to locate the main application code.

I will examine the contents of `check_routes.py` and `README.md` in the current directory to understand the backend's expected behavior and target URL.

I will check the scripts `run_cuccu_ralph.ps1` and `run_fashion_ralph.ps1` to see how the backend tests are executed.

I will read `fix_be.py` and check the contents of the `doing` directory to see if there are any recent logs or failure reports that might provide more context.

I will read `doing\2026-04-21-test-all-api-local.md` to review the history of the backend tests and check for any additional information on why the connection is failing.

Dß╗▒a tr├¬n nß╗Öi dung file `be_result.txt` v├á y├¬u cß║ºu tß╗½ `tmp_be_prompt.txt`, d╞░ß╗¢i ─æ├óy l├á kß║┐t quß║ú ─æ├ính gi├í:

**TRß║áNG TH├üI: FAIL**

**Chi tiß║┐t lß╗ùi:**
Tß║Ñt cß║ú 8 API backend ─æß╗üu trß║ú vß╗ü lß╗ùi: `FAIL - Unable to connect to the remote server`. 
─Éiß╗üu n├áy x├íc nhß║¡n rß║▒ng Backend server hiß╗çn ─æang kh├┤ng hoß║ít ─æß╗Öng hoß║╖c ─æang chß║íy tr├¬n mß╗Öt cß╗òng (port) kh├íc vß╗¢i cß╗òng m├á script test ─æang gß╗ìi (th├┤ng th╞░ß╗¥ng l├á `5005` theo file `run_cuccu_ralph.ps1`).

**File Python cß║ºn sß╗¡a:**
1.  **`backend/config.py`**: Cß║ºn kiß╗âm tra v├á ─æß║úm bß║úo biß║┐n `PORT` ─æ╞░ß╗úc cß║Ñu h├¼nh l├á `5005` ─æß╗â khß╗¢p vß╗¢i script kiß╗âm tra tß╗▒ ─æß╗Öng, hoß║╖c ─æß║úm bß║úo `DISABLE_AUTH` ─æ╞░ß╗úc nhß║¡n diß╗çn ─æ├║ng tß╗½ m├┤i tr╞░ß╗¥ng.
2.  **`backend/server.py`**: Cß║ºn kiß╗âm tra xem server c├│ gß║╖p lß╗ùi khi khß╗ƒi ─æß╗Öng (startup error) hay kh├┤ng. V├¡ dß╗Ñ: Lß╗ùi `ImportError` nß║┐u thiß║┐u file `__init__.py` trong c├íc th╞░ mß╗Ñc module (nh╞░ `api/chatbot/`) hoß║╖c lß╗ùi thiß║┐u biß║┐n `DISABLE_AUTH` khi khß╗ƒi tß║ío middleware.
3.  **`backend/api/chatbot/__init__.py`**: (Nß║┐u ch╞░a c├│) Cß║ºn tß║ío file n├áy ─æß╗â export `router` tß╗½ `chat_route.py`, gi├║p `server.py` c├│ thß╗â import th├ánh c├┤ng.
