feat(skills): reload registry on watcher change events

src/daemon/services.test.ts

@@ -1,5 +1,5 @@
-import { afterEach, describe, expect, it } from 'vitest';
-import { mkdtempSync, mkdirSync, rmSync } from 'fs';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import { mkdtempSync, mkdirSync, rmSync, writeFileSync } from 'fs';
 import { join } from 'path';
 import { tmpdir } from 'os';
 import { configSchema } from '../config/schema.js';
@@ -10,11 +10,18 @@ describe('initSkills watcher wiring', () => {
   const roots: string[] = [];
 
   afterEach(() => {
+    vi.useRealTimers();
     for (const root of roots.splice(0)) {
       rmSync(root, { recursive: true, force: true });
     }
   });
 
+  function writeSkill(rootDir: string, name: string): void {
+    const skillDir = join(rootDir, name);
+    mkdirSync(skillDir, { recursive: true });
+    writeFileSync(join(skillDir, 'SKILL.md'), `# ${name}\n\nTest skill.`);
+  }
+
   function makeConfig(overrides: Record<string, unknown> = {}) {
     return configSchema.parse({
       telegram: { bot_token: 'test-token', allowed_chat_ids: [1] },
@@ -54,4 +61,40 @@ describe('initSkills watcher wiring', () => {
     await lifecycle.shutdown();
     expect(result.skillsWatcher?.isRunning).toBe(false);
   });
+
+  it('reloads registry from disk when watcher callback fires', () => {
+    vi.useFakeTimers();
+    const root = mkdtempSync(join(tmpdir(), 'flynn-services-'));
+    roots.push(root);
+    const managedDir = join(root, 'skills');
+    mkdirSync(managedDir, { recursive: true });
+    writeSkill(managedDir, 'alpha');
+
+    const config = makeConfig({
+      skills: {
+        managed_dir: managedDir,
+        load: { watch: true, watch_debounce_ms: 20 },
+      },
+    });
+    const lifecycle = new Lifecycle();
+
+    const result = initSkills(config, lifecycle);
+    expect(result.skillRegistry.get('alpha')).toBeDefined();
+    expect(result.skillRegistry.get('beta')).toBeUndefined();
+
+    writeSkill(managedDir, 'beta');
+    result.skillsWatcher?.notifyPathChanged(join(managedDir, 'beta', 'SKILL.md'));
+    vi.advanceTimersByTime(20);
+
+    expect(result.skillRegistry.get('beta')).toBeDefined();
+
+    rmSync(join(managedDir, 'alpha'), { recursive: true, force: true });
+    result.skillsWatcher?.notifyPathChanged(join(managedDir, 'alpha'));
+    vi.advanceTimersByTime(20);
+
+    expect(result.skillRegistry.get('alpha')).toBeUndefined();
+    expect(result.skillRegistry.get('beta')).toBeDefined();
+
+    result.skillsWatcher?.stop();
+  });
 });