feat(coding): add model tools and device packages

tests/unit/pi-worker-pool.test.ts

@@ -724,6 +724,44 @@ describe('Pi worker pool', () => {
     expect(cancelled).not.toContain('other');
   });
 
+  it('refreshes idle worker resources immediately and defers an active run until settlement', async () => {
+    const workers = new Map<string, FakeWorker[]>();
+    const pool = new PiWorkerPool({
+      maxIdle: 4,
+      openWorker: async ({ conversation: input, existingSession }) => {
+        const worker = new FakeWorker(
+          `worker-${input.conversationId}-${(workers.get(input.conversationId)?.length ?? 0) + 1}`,
+        );
+        workers.set(input.conversationId, [...(workers.get(input.conversationId) ?? []), worker]);
+        return {
+          worker,
+          session: existingSession ?? {
+            piSessionId: `session-${input.conversationId}`,
+            sessionKey: `key-${input.conversationId}`,
+          },
+        };
+      },
+    });
+    await Promise.all([
+      pool.prepare(conversation('conversation-running')),
+      pool.prepare(conversation('conversation-idle')),
+    ]);
+    pool.startTopLevel({
+      conversationId: 'conversation-running',
+      runId: 'run-running',
+      command: { type: 'prompt', message: 'running' },
+    });
+    await expect.poll(() => workers.get('conversation-running')![0]!.requests.length).toBe(1);
+
+    await pool.refreshResources();
+
+    expect(workers.get('conversation-idle')).toHaveLength(2);
+    expect(workers.get('conversation-idle')![0]!.stopped).toBe(true);
+    expect(workers.get('conversation-running')).toHaveLength(1);
+    workers.get('conversation-running')![0]!.emit({ type: 'agent_settled' });
+    await expect.poll(() => workers.get('conversation-running')).toHaveLength(2);
+  });
+
   it('rebuilds stale idle workers before prompt and lets running workers settle first', async () => {
     const workers = new Map<string, FakeWorker[]>();
     const revisions: Array<{ conversationId: string; provider: number; resources: number }> = [];