fix(delegation): audit-log root follows the registry (Issue #57)

get_logs_dir(registry_dir) resolves the audit-log root as the
delegate_job_logs next to the registry in use when DELEGATE_JOB_LOGS_DIR
is not set; sibling_logs_dir() is the pure sibling rule. Every writer and
reader that knows its registry (registry, engine, publish_event, remote,
job_subscriber, reconcile.sh, the loop runner's fingerprint exclusion)
passes that root instead of falling back to the workspace default.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

.agents/skills/lib_py/delegation/registry.py

@@ -175,7 +175,7 @@ def register_job(
         _atomic_write_record(job_id, registry_dir, record)
     # Seed the persistent audit log (meta.json + status.json + a "registered"
     # event). Best-effort inside init_job_log — never blocks registration.
-    mqtt_common.init_job_log(job_id, meta=record)
+    mqtt_common.init_job_log(job_id, meta=record, logs_dir=mqtt_common.get_logs_dir(registry_dir))
     logger.info("registered job %s (agent=%s session=%s)", job_id, agent, agent_session)
     return job_id
 
@@ -233,7 +233,8 @@ def _pick_pending_legacy(agent_session: str, registry_dir: str = DEFAULT_REGISTR
         updated_at = chosen["updated_at"]
     # Mirrors the pending->running transition into the audit log outside the
     # lock. This is the shape the engine now generalises to every transition.
-    mqtt_common.update_logged_status(job_id, "running", updated_at=updated_at)
+    logs_dir = mqtt_common.get_logs_dir(registry_dir)
+    mqtt_common.update_logged_status(job_id, "running", logs_dir=logs_dir, updated_at=updated_at)
     mqtt_common.append_event(job_id, {
         "event": "status_changed",
         "from": "pending",
@@ -328,7 +329,7 @@ def get_feedback(job_id: str, registry_dir: str = DEFAULT_REGISTRY_DIR,
     # 1) Try the unified audit log first (ndjson) since it's written synchronously by the subscriber
     try:
         from lib_py.delegation import mqtt_common
-        logs_dir = mqtt_common.get_logs_dir()
+        logs_dir = mqtt_common.get_logs_dir(registry_dir)
         logged = list(mqtt_common.iter_logged_events(job_id, logs_dir))
         for e in reversed(logged):
             if e.get("source_event") in events:
@@ -450,7 +451,7 @@ def _build_parser() -> argparse.ArgumentParser:
                         help="summarise every job under the logs dir instead")
     p_logs.add_argument("--logs-dir", default=None,
                         help="override the audit-log root (default: $DELEGATE_JOB_LOGS_DIR "
-                             "or <cwd>/.mam/delegate_job_logs)")
+                             "or the delegate_job_logs next to --registry-dir)")
     p_logs.add_argument("--tail", type=int, default=0,
                         help="show only the last N events (0 = all)")
     p_logs.add_argument("--json", action="store_true",
@@ -698,7 +699,7 @@ def main(argv: Optional[List[str]] = None) -> int:
 
 def _cmd_logs(args) -> int:
     """Pretty-print one job's events.ndjson, or summarise all logged jobs."""
-    logs_dir = args.logs_dir or mqtt_common.get_logs_dir()
+    logs_dir = args.logs_dir or mqtt_common.get_logs_dir(args.registry_dir)
 
     if args.list_all:
         jobs = mqtt_common.list_logged_jobs(logs_dir)