fix: route case-insensitive worker messages

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

tests/test_routing.py

@@ -1,10 +1,18 @@
 import pytest
 
-from tamq.routing import parse_address_line, parse_command_line
+from tamq.routing import (
+    is_delivery_line,
+    parse_address_line,
+    parse_command_line,
+    parse_worker_address_line,
+)
 
 
-def test_direct_address_uses_readable_case_sensitive_grammar():
-    routed = parse_address_line("To:railiance-platform: do something!")
+@pytest.mark.parametrize("keyword", ["to", "To", "TO", "tO"])
+def test_direct_address_keyword_is_case_insensitive(keyword):
+    routed = parse_address_line(
+        f"{keyword}:railiance-platform: do something!"
+    )
     assert routed.body == "do something!"
     assert routed.target_repo == "railiance-platform"
 
@@ -14,7 +22,6 @@ def test_direct_address_uses_readable_case_sensitive_grammar():
     [
         "@repo: removed",
         "#repo: removed",
-        "to:repo: wrong case",
         "hello To:repo: not at start",
         "To:repo:",
         "From:repo: inbound envelope",
@@ -24,7 +31,23 @@ def test_non_protocol_and_legacy_input_is_not_routed(line):
     assert parse_address_line(line) is None
 
 
-def test_operator_command_grammar():
-    assert parse_command_line("Cmd: mode=trigger") == "mode=trigger"
-    assert parse_command_line("Cmd: reset-limits") == "reset-limits"
-    assert parse_command_line("cmd: mode=trigger") is None
+@pytest.mark.parametrize("keyword", ["cmd", "Cmd", "CMD", "cMd"])
+def test_operator_command_keyword_is_case_insensitive(keyword):
+    assert parse_command_line(f"{keyword}: mode=trigger") == "mode=trigger"
+    assert parse_command_line(f"{keyword}: reset-limits") == "reset-limits"
+
+
+@pytest.mark.parametrize("keyword", ["from", "From", "FROM", "fRoM"])
+def test_delivery_keyword_is_case_insensitive(keyword):
+    assert is_delivery_line(f"{keyword}:repo: inbound envelope") is True
+
+
+@pytest.mark.parametrize("gutter", ["• ", "  ●  ", "▪ ", "◆ "])
+def test_worker_address_accepts_terminal_output_gutter(gutter):
+    routed = parse_worker_address_line(f"{gutter}tO:target: worker reply")
+    assert routed == parse_address_line("To:target: worker reply")
+
+
+@pytest.mark.parametrize("gutter", ["› ", "> ", "$ ", "# ", "* ", "- "])
+def test_worker_address_rejects_operator_and_markup_gutters(gutter):
+    assert parse_worker_address_line(f"{gutter}To:target: operator echo") is None