Gateway: per-watch notification switches, model list for new threads, and Ask before acting

gateway/src/notify.ts

@@ -14,6 +14,8 @@ export interface Push {
   subtitle?: string;
   body: string;
   category: PushCategory;
+  /** True for a subagent's request, which watches can mute apart from their own threads'. */
+  fromSubagent?: boolean;
   data: PushPayload;
   /** Replaces an earlier push about the same thing on the watch. */
   collapseId: string;
@@ -99,6 +101,7 @@ export class Notifier {
       subtitle: project ? `${host.label} · ${project}` : host.label,
       body: parent ? `Subagent ${thread.title}: ${text}` : text,
       category: category(phase),
+      fromSubagent: parent !== undefined,
       data: { hostId: host.id, threadId: thread.id, ...(requestId ? { requestId } : {}) },
       collapseId: `${host.id}:${thread.id}`.slice(0, 64),
     });