fix: route case-insensitive worker messages

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a03397-4d51-7fd1-8ff2-946eb22ea2bc

tests/test_tmux_manager.py

@@ -161,9 +161,11 @@ def test_neutral_plan_starts_shell_without_sending_keystrokes(tmp_path, monkeypa
     assert "TAMQ_REPO=b" in new_window
     assert f"PATH={command_dir}{os.pathsep}" in " ".join(new_session)
     assert f"PATH={command_dir}{os.pathsep}" in " ".join(new_window)
-    assert (command_dir / "To:a:").is_file()
-    assert (command_dir / "To:b:").is_file()
-    assert (command_dir / "Cmd:").is_file()
+    for keyword in ("To", "to", "TO", "tO"):
+        assert (command_dir / f"{keyword}:a:").is_file()
+        assert (command_dir / f"{keyword}:b:").is_file()
+    for keyword in ("Cmd", "cmd", "CMD", "cMd"):
+        assert (command_dir / f"{keyword}:").is_file()
     assert not any(path.name.startswith("@") for path in command_dir.iterdir())
 
 
@@ -174,7 +176,16 @@ def test_protocol_commands_absorb_forwarded_shell_lines(tmp_path):
     )
     manager._install_address_commands(["audit-core"])
 
-    for name in ("To:audit-core:", "Cmd:"):
+    for name in (
+        "To:audit-core:",
+        "to:audit-core:",
+        "TO:audit-core:",
+        "tO:audit-core:",
+        "Cmd:",
+        "cmd:",
+        "CMD:",
+        "cMd:",
+    ):
         result = subprocess.run(
             [str(command_dir / name), "Some message!", "$value"],
             text=True,