fix(ext+hub): v0.5.2 Idle→Resume 신호 소실 3중 버그 수정 — auth_fail 재연결 + pending_owners 보존 + step-probe 리셋

hub.py

@@ -269,11 +269,17 @@ class WSHub:
             self.project_connections[conn.project] = set()
         self.project_connections[conn.project].add(conn.conn_id)
 
-        # FIX: Reassign orphaned pending_owners (from dead conn_ids) to this new connection.
-        # When Extension reconnects, old conn_id entries become stale.
+        # FIX: Reassign orphaned pending_owners (from dead conn_ids or orphan markers)
+        # to this new connection. When Extension reconnects, old entries become stale.
         reassigned = 0
         for rid, cid in list(self.pending_owners.items()):
-            if cid not in self.connections:
+            if cid.startswith("orphan:"):
+                # Only reassign orphans from the same project
+                if cid != f"orphan:{conn.project}":
+                    continue
+                self.pending_owners[rid] = conn.conn_id
+                reassigned += 1
+            elif cid not in self.connections:
                 self.pending_owners[rid] = conn.conn_id
                 reassigned += 1
         if reassigned:
@@ -324,7 +330,13 @@ class WSHub:
                         f"(disconnected {conn_id})"
                     )
                 else:
-                    del self.pending_owners[rid]
+                    # Preserve as orphan marker instead of deleting —
+                    # will be reassigned when Extension reconnects
+                    self.pending_owners[rid] = f"orphan:{project}"
+                    logger.info(
+                        f"[HUB] Orphaned pending {rid[:12]} "
+                        f"(no active connections in {project})"
+                    )
 
         # Close WebSocket if still open
         if not conn.ws.closed: