Ask HN: Why can't Codex/Claude compile app and test that changes worked?

    Nawin.Auth is running on 567. Let me write a quick test to capture exactly what bytes Nawin.Auth sends vs Crabbit (on 5670):

    ● Write(/tmp/compare_auth.py)
       ⎿  Wrote 83 lines to ../../../../tmp/compare_auth.py
            1 #!/usr/bin/env python3
            2 """Compare auth server responses byte-by-byte"""
            3 import socket
            4
            5 def test_auth(host, port, name):
            6     print(f"\n=== Testing {name} on {host}:{port} ===")
            7
            8     # Build AuthTreq request (141 bytes)
            9     # type[1] + authid[28] + authdom[48] + chal[8] + hostid[28] + uid[28]
           10     request = bytearray(141)
          … +73 lines (ctrl+o to expand)

     ● Bash(sudo lsof -i :5670 2>/dev/null | head -3)
       ⎿  COMMAND     PID USER FD   TYPE DEVICE SIZE/OFF NODE NAME
          run-auth- 95646 root 9u  IPv4 139735      0t0  TCP \*:5670 (LISTEN)

     ● Bash(python3 /tmp/compare_auth.py 2>&1)
       ⎿ === Testing Nawin.Auth on 127.0.0.1:567 ===
         Request (141 bytes):
           Hex:              01676c656e6461000000000000000000000000000000000000000000006e6177696e00000000000000
         … +53 lines (ctrl+o to expand)

     ● Both send 145 bytes, same format! Differences are only in the random session keys (bytes 64-72 and 136-144). The ticket encryption is identical.