update worker manager and worker to support plugin registry

SYS/worker_manager.py

@@ -277,6 +277,7 @@ class WorkerManager:
         self._lock = Lock()
         self.worker_handlers: Dict[str, WorkerLoggingHandler] = {}
         self._worker_last_step: Dict[str, str] = {}
+        self._db_lock = Lock()
         
         # Buffered stdout/log batching to reduce DB lock contention.
         self._stdout_buffers: Dict[Tuple[str, str], List[str]] = {}
@@ -596,8 +597,30 @@ class WorkerManager:
                           limit: int = 500) -> List[Dict[str,
                                                          Any]]:
         """Fetch recorded worker timeline events."""
-        with self._db_lock:
-            return self.db.get_worker_events(worker_id, limit)
+        try:
+            with self._db_lock:
+                rows = db.fetchall(
+                    "SELECT content, channel, timestamp FROM worker_stdout WHERE worker_id = ? ORDER BY timestamp ASC LIMIT ?",
+                    (worker_id, int(limit or 500)),
+                ) or []
+            events: List[Dict[str, Any]] = []
+            for row in rows:
+                payload = dict(row)
+                events.append(
+                    {
+                        "message": payload.get("content"),
+                        "channel": payload.get("channel") or "stdout",
+                        "created_at": payload.get("timestamp"),
+                        "step": self._worker_last_step.get(worker_id),
+                    }
+                )
+            return events
+        except Exception as e:
+            logger.error(
+                f"[WorkerManager] Error getting worker events for {worker_id}: {e}",
+                exc_info=True,
+            )
+            return []
 
     def log_step(self, worker_id: str, step_text: str) -> bool:
         """Log a step to a worker's step history.
@@ -610,10 +633,14 @@ class WorkerManager:
             True if successful
         """
         try:
-            with self._db_lock:
-                success = self.db.append_worker_steps(worker_id, step_text)
+            step_value = str(step_text or "").strip()
+            if not step_value:
+                return True
+
+            success = update_worker(worker_id, details=step_value)
+            append_worker_stdout(worker_id, step_value, channel="step")
             if success:
-                self._worker_last_step[worker_id] = step_text
+                self._worker_last_step[worker_id] = step_value
             return success
         except Exception as e:
             logger.error(
@@ -637,7 +664,18 @@ class WorkerManager:
         """
         try:
             with self._db_lock:
-                return self.db.get_worker_steps(worker_id)
+                rows = db.fetchall(
+                    "SELECT content FROM worker_stdout WHERE worker_id = ? AND channel = 'step' ORDER BY timestamp ASC",
+                    (worker_id,),
+                ) or []
+            parts = [str(dict(row).get("content") or "").strip() for row in rows]
+            parts = [part for part in parts if part]
+            if parts:
+                return "\n".join(parts)
+            worker = db_get_worker(worker_id)
+            if isinstance(worker, dict):
+                return str(worker.get("details") or "")
+            return ""
         except Exception as e:
             logger.error(
                 f"[WorkerManager] Error getting steps for worker {worker_id}: {e}",
@@ -725,7 +763,17 @@ class WorkerManager:
         """
         try:
             with self._db_lock:
-                count = self.db.cleanup_old_workers(days)
+                cutoff_days = max(0, int(days or 0))
+                cutoff_expr = f"-{cutoff_days} days"
+                db.execute(
+                    "DELETE FROM worker_stdout WHERE worker_id IN (SELECT id FROM workers WHERE status != 'running' AND updated_at < datetime('now', ?))",
+                    (cutoff_expr,),
+                )
+                cur = db.execute(
+                    "DELETE FROM workers WHERE status != 'running' AND updated_at < datetime('now', ?)",
+                    (cutoff_expr,),
+                )
+                count = int(getattr(cur, "rowcount", 0) or 0)
             if count > 0:
                 logger.info(f"[WorkerManager] Cleaned up {count} old workers")
             return count