fix(pi): keep active runs alive during background sleep

tests/unit/pi-release-proof-wiring.test.ts

@@ -25,4 +25,19 @@ describe('Pi packaged release proof wiring', () => {
     expect(source.slice(proxyStart, resilienceStart))
       .not.toContain("startLocalProofProvider('subagent')");
   });
+
+  it('wires the packaged resilience proof through Main background and intentional-dispose seams', async () => {
+    const [mainSource, proofSource, scriptSource] = await Promise.all([
+      readFile(resolve('electron/main/index.ts'), 'utf8'),
+      readFile(resolve('electron/coding-runtime/pi/release-proof.ts'), 'utf8'),
+      readFile(resolve('scripts/run-pi-subagent-packaged-smoke.mjs'), 'utf8'),
+    ]);
+
+    expect(mainSource).toContain("codingProducts?.sleep('background_sleep')");
+    expect(mainSource).toContain('acquireBackgroundLease: (lease) => backgroundLifecycle!');
+    expect(proofSource).toContain("runtime.dispose(run.targetConversationId, 'test_injection')");
+    expect(scriptSource).toContain("evaluateProof(electronApplication, 'resilience.idle-status')");
+    expect(scriptSource).toContain('setMainWindowVisible(electronApplication, false)');
+    expect(scriptSource).toContain("evaluateProof(electronApplication, 'resilience.dispose-target')");
+  });
 });