feat: complete reliable coordination adapter

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

tests/test_broker.py

@@ -47,6 +47,15 @@ def test_broker_collects_worker_followup_lines_until_empty(tmp_path, monkeypatch
     assert row["body"] == (
         "Review this\nContext: AUTH-WP-4.\nReply with accepted or blocked."
     )
+    events = store.protocol_events()
+    assert [event["event_type"] for event in events] == [
+        "worker.block_started",
+        "message.accepted",
+        "worker.block_closed",
+    ]
+    assert events[-1]["message_id"] == row["message_id"]
+    assert events[-1]["outcome"] == "accepted"
+    assert events[-1]["detail"] == '{"line_count":3,"reason":"empty_line"}'
 
 
 def test_new_worker_address_flushes_previous_block(tmp_path, monkeypatch):
@@ -81,6 +90,10 @@ def test_worker_cmd_is_inert_but_operator_cmd_changes_mode(tmp_path):
     broker.inspect_operator_line("cMD: MODE=TRIGGER")
     assert store.endpoint("ep")["delivery_mode"] == "trigger"
     assert notices[-1] == "From:tamq: Mode set to trigger."
+    command_events = store.protocol_events(event_type="command.applied")
+    assert len(command_events) == 1
+    assert command_events[0]["delivery_mode"] == "trigger"
+    assert command_events[0]["provenance"] == "operator_input"
 
 
 def test_operator_command_names_are_case_insensitive(tmp_path):