feat(web): scheduled jobs board (/console/schedules)

- cards grouped by collect / download / organize / maintain / agent checks: switch,
  in-place interval or cron edit, last result and duration, next-run countdown,
  failure reason, run now, skip next, reset to default, history drawer
- top stats (enabled / failed / running / total) and a scheduler-offline notice;
  refreshed by the schedule.changed SSE event with a 30s fallback
- agent check cards show goal template, trigger, budget and allowlist size; create /
  edit dialog (read-only capabilities, budget, trigger, interval, report to inbox)
- nav entry in the system group, route and smoke route

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/web/app/components/console/nav.test.ts

@@ -2,9 +2,9 @@ import { describe, expect, it } from "vitest";
 import { consolePath, findNavItem, NAV_ITEMS } from "./nav.ts";
 
 describe("控制台导航", () => {
-  it("12 个工作区 + 引擎面板 + 审计,路径唯一且都在 /console 下", () => {
-    expect(NAV_ITEMS).toHaveLength(15);
-    expect(new Set(NAV_ITEMS.map((i) => i.to)).size).toBe(15);
+  it("12 个工作区 + 定时任务 + 引擎面板 + 审计,路径唯一且都在 /console 下", () => {
+    expect(NAV_ITEMS).toHaveLength(16);
+    expect(new Set(NAV_ITEMS.map((i) => i.to)).size).toBe(16);
     expect(NAV_ITEMS.every((i) => i.to.startsWith("/console"))).toBe(true);
   });