Prioritize conversation replies

tests/rate-limiter.test.ts

@@ -105,6 +105,25 @@ describe('RateLimiter', () => {
     expect(order).toEqual([1, 2, 3]);
   });
 
+  it('runs a queued high-priority reply before queued outreach', async () => {
+    const order: string[] = [];
+    let release!: () => void;
+    const blocker = new Promise<void>((resolve) => { release = resolve; });
+    const active = limiter.throttle(async () => {
+      order.push('active');
+      await blocker;
+      return 'active';
+    });
+    await vi.waitFor(() => expect(order).toEqual(['active']));
+
+    const outreach = limiter.throttle(async () => { order.push('outreach'); return 'outreach'; });
+    const reply = limiter.throttle(async () => { order.push('reply'); return 'reply'; }, () => true, undefined, 100);
+    release();
+    await Promise.all([active, outreach, reply]);
+
+    expect(order).toEqual(['active', 'reply', 'outreach']);
+  });
+
   describe('getStats', () => {
     it('returns initial stats', () => {
       const stats = limiter.getStats();