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

src/cli/doctor.test.ts

@@ -1,5 +1,5 @@
 import { describe, it, expect, afterEach } from 'vitest';
-import { runChecks, type CheckResult, type DoctorContext } from './doctor.js';
+import { computeDoctorExitCode, runChecks, type CheckResult, type DoctorContext } from './doctor.js';
 import { writeFileSync, mkdirSync, rmSync } from 'fs';
 import { join } from 'path';
 import { tmpdir } from 'os';
@@ -11,6 +11,22 @@ describe('doctor checks', () => {
     try { rmSync(testDir, { recursive: true }); } catch {}
   });
 
+  it('computeDoctorExitCode returns 0 with warnings in non-strict mode', () => {
+    const results: CheckResult[] = [
+      { status: 'pass', label: 'a' },
+      { status: 'warn', label: 'b' },
+    ];
+    expect(computeDoctorExitCode(results, false)).toBe(0);
+  });
+
+  it('computeDoctorExitCode returns 1 with warnings in strict mode', () => {
+    const results: CheckResult[] = [
+      { status: 'pass', label: 'a' },
+      { status: 'warn', label: 'b' },
+    ];
+    expect(computeDoctorExitCode(results, true)).toBe(1);
+  });
+
   it('reports PASS when config file exists and is valid', async () => {
     mkdirSync(testDir, { recursive: true });
     const configPath = join(testDir, 'config.yaml');