fix(teams): propagate local_key in team task completion/fail broadcasts (#877)

Forum topic routing (Telegram supergroup threads) relies on local_key
carried through team task events to pick the correct thread for
notifications. Four broadcast sites dropped local_key by relying on
WithContextInfo(ctx) alone — but the member agent's isolated context
does not carry the originating local_key.

Read task.Metadata[TaskMetaLocalKey] explicitly and pass via
WithLocalKey() to match the already-correct pattern in
team_tool_dispatch.go and team_tasks_blocker.go.

Covered sites:
  - team_tasks_lifecycle.executeComplete → EventTeamTaskCompleted
  - gateway_consumer_post_turn agent-error → EventTeamTaskFailed
  - gateway_consumer_post_turn loop-kill → EventTeamTaskFailed
  - gateway_consumer_post_turn auto-complete → EventTeamTaskCompleted

cmd/gateway_consumer_post_turn.go

@@ -98,6 +98,7 @@ func resolveTeamTaskOutcome(
 	taskChannel := meta.Channel
 	taskChatID := meta.ChatID
 	taskPeerKind := meta.PeerKind
+	var taskLocalKey string
 
 	// Enrich with live task data if available.
 	if currentTask != nil {
@@ -113,9 +114,15 @@ func resolveTeamTaskOutcome(
 		if currentTask.ChatID != "" {
 			taskChatID = currentTask.ChatID
 		}
-		if taskPeerKind == "" && currentTask.Metadata != nil {
-			if pk, ok := currentTask.Metadata[tools.TaskMetaPeerKind].(string); ok && pk != "" {
-				taskPeerKind = pk
+		if currentTask.Metadata != nil {
+			if taskPeerKind == "" {
+				if pk, ok := currentTask.Metadata[tools.TaskMetaPeerKind].(string); ok && pk != "" {
+					taskPeerKind = pk
+				}
+			}
+			// local_key is required for forum topic routing (e.g. Telegram supergroup threads).
+			if lk, ok := currentTask.Metadata[tools.TaskMetaLocalKey].(string); ok {
+				taskLocalKey = lk
 			}
 		}
 	}
@@ -137,6 +144,7 @@ func resolveTeamTaskOutcome(
 				tools.WithChannel(taskChannel),
 				tools.WithChatID(taskChatID),
 				tools.WithPeerKind(taskPeerKind),
+				tools.WithLocalKey(taskLocalKey),
 				tools.WithTimestamp(now),
 			))
 		}
@@ -171,6 +179,7 @@ func resolveTeamTaskOutcome(
 				tools.WithChannel(taskChannel),
 				tools.WithChatID(taskChatID),
 				tools.WithPeerKind(taskPeerKind),
+				tools.WithLocalKey(taskLocalKey),
 				tools.WithTimestamp(now),
 			))
 		}
@@ -205,6 +214,7 @@ func resolveTeamTaskOutcome(
 				tools.WithChannel(taskChannel),
 				tools.WithChatID(taskChatID),
 				tools.WithPeerKind(taskPeerKind),
+				tools.WithLocalKey(taskLocalKey),
 				tools.WithTimestamp(now),
 			))
 		}

internal/tools/team_tasks_lifecycle.go

@@ -88,9 +88,13 @@ func (t *TeamTasksTool) executeComplete(ctx context.Context, args map[string]any
 	completedTask, _ := t.manager.Store().GetTask(ctx, taskID)
 	var taskNumber int
 	var taskSubject string
+	var taskLocalKey string
 	if completedTask != nil {
 		taskNumber = completedTask.TaskNumber
 		taskSubject = completedTask.Subject
+		if lk, ok := completedTask.Metadata[TaskMetaLocalKey].(string); ok {
+			taskLocalKey = lk
+		}
 	}
 	t.manager.BroadcastTeamEvent(ctx, protocol.EventTeamTaskCompleted, BuildTaskEventPayload(
 		team.ID.String(), taskID.String(),
@@ -99,6 +103,7 @@ func (t *TeamTasksTool) executeComplete(ctx context.Context, args map[string]any
 		WithTaskInfo(taskNumber, taskSubject),
 		WithOwner(ownerKey, t.manager.AgentDisplayName(ctx, ownerKey)),
 		WithContextInfo(ctx),
+		WithLocalKey(taskLocalKey),
 	))
 
 	// Dependent tasks are dispatched by the consumer after this agent's turn ends