feat: harden ai onboarding and approval chat flows

src/lib/boss-data.ts

@@ -4111,6 +4111,18 @@ function upsertDispatchPlanInState(
   state.dispatchPlans.unshift(plan);
   if (groupProject.collaborationMode === "approval_required") {
     groupProject.approvalState = "pending_user";
+    const targetSummary = validatedTargets
+      .map((target) => {
+        const project = state.projects.find((item) => item.id === target.projectId);
+        return `《${project?.threadMeta.threadDisplayName ?? project?.name ?? target.projectId}》`;
+      })
+      .join("、");
+    pushProjectLedgerMessage(state, groupProjectId, {
+      sender: "master",
+      senderLabel: "主 Agent",
+      body: `主 Agent 已生成推荐，等待你确认后再下发到 ${validatedTargets.length} 个线程：${targetSummary}。`,
+      kind: "system_notice",
+    });
   } else {
     groupProject.approvalState = "not_required";
   }