feat(ops): add setup operator pack, heartbeat alert cooldown, and doctor strict mode

src/automation/heartbeat.test.ts

@@ -8,6 +8,7 @@ function makeConfig(overrides?: Partial<HeartbeatConfig>): HeartbeatConfig {
   return {
     enabled: true,
     interval: '5m',
+    notify_cooldown: '30m',
     checks: ['gateway', 'model', 'channels', 'memory', 'disk', 'process_memory', 'backup'],
     failure_threshold: 2,
     disk_threshold_mb: 100,
@@ -227,6 +228,34 @@ describe('HeartbeatMonitor', () => {
     expect(mockSend).toHaveBeenCalledTimes(1);
   });
 
+  it('suppresses repeat failure notifications inside notify cooldown after recovery', async () => {
+    const mockSend = vi.fn().mockResolvedValue(undefined);
+    const mockGet = vi.fn().mockReturnValue({ send: mockSend });
+
+    const deps = makeDeps({
+      config: makeConfig({
+        checks: ['model'],
+        failure_threshold: 1,
+        notify_cooldown: '1h',
+        notify: { channel: 'telegram', peer: '123' },
+      }),
+      modelRouter: undefined,
+      channelLookup: { get: mockGet },
+    });
+    monitor = new HeartbeatMonitor(deps);
+
+    await monitor.runChecks();
+    expect(mockSend).toHaveBeenCalledTimes(1);
+
+    Object.assign(deps, { modelRouter: { getTier: () => 'default' } });
+    await monitor.runChecks();
+    expect(mockSend).toHaveBeenCalledTimes(2);
+
+    Object.assign(deps, { modelRouter: undefined });
+    await monitor.runChecks();
+    expect(mockSend).toHaveBeenCalledTimes(2);
+  });
+
   it('recovery notification sent when checks pass after failures', async () => {
     const mockSend = vi.fn().mockResolvedValue(undefined);
     const mockGet = vi.fn().mockReturnValue({ send: mockSend });