feat(coding-runtime): add managed Pi extension host

tests/unit/pi-managed-worker-opener.test.ts

@@ -26,6 +26,7 @@ import type {
 } from '../../electron/coding-runtime/pi/rpc-client';
 import type { PiWorkerProcessOptions } from '../../electron/coding-runtime/pi/worker-process';
 import type { PiRuntimeTelemetryEvent } from '../../electron/coding-runtime/pi/telemetry';
+import { PiManagedExtensionHost } from '../../electron/coding-runtime/pi/extension-host';
 
 const roots: string[] = [];
 const NOW = '2026-08-22T16:00:00.000Z';
@@ -54,6 +55,8 @@ class OpenerFakeProcess implements PiWorkerProcessAdapter {
     };
   }
 
+  async send(_command: PiRpcCommand): Promise<void> {}
+
   subscribe(_listener: (event: PiRpcEvent) => void): () => void { return () => undefined; }
   subscribeInvalidation(_listener: (error: PiProcessError) => void): () => void { return () => undefined; }
   async stop() { return { mode: 'stdin-close' as const, code: 0, signal: null }; }
@@ -118,12 +121,14 @@ describe('managed Pi worker opener', () => {
     const processOptions: PiWorkerProcessOptions[] = [];
     const telemetry: PiRuntimeTelemetryEvent[] = [];
     const registry = new PiSessionRegistry({ projectStore });
+    const extensionHost = new PiManagedExtensionHost();
     const opener = createPiManagedWorkerOpener({
       registry,
       executablePath: 'electron.exe',
       cliPath: 'pi-cli.js',
       userDataDir,
       bundledSkillsDir: path.resolve('resources/coding-skills'),
+      extensionHost,
       loadProviderInput: async () => ({ accounts: [account], modelSummaries: [] }),
       resolveCredential: async () => 'provider-secret-value',
       createSessionKey: () => 'session-key-a',
@@ -155,10 +160,15 @@ describe('managed Pi worker opener', () => {
       expect(argv).toContain('--system-prompt');
       expect(argv).toContain('grilling');
       expect(argv).toContain('--session-id');
+      expect(argv).toContain('--extension');
+      expect(argv).toContain('makelore-runtime-v1.mjs');
+      expect(options.additionalArgs?.filter((argument) => argument === '--extension')).toHaveLength(1);
       expect(argv).not.toContain('PRIVATE MANAGED PROMPT');
       expect(argv).not.toContain('provider-secret-value');
       expect(Object.values(options.env ?? {})).toContain('provider-secret-value');
       expect(options.sensitiveValues).toContain('provider-secret-value');
+      expect(options.env?.MAKELORE_PI_BRIDGE_URL).toMatch(/^http:\/\/127\.0\.0\.1:/);
+      expect(options.env?.MAKELORE_PI_CONTEXT_FILE).toContain('worker-');
     }
     const modelsFile = path.join(userDataDir, 'coding-runtime', 'pi', 'config', 'models.json');
     expect(await readFile(modelsFile, 'utf8')).not.toContain('provider-secret-value');
@@ -169,5 +179,8 @@ describe('managed Pi worker opener', () => {
     expect(JSON.stringify(telemetry)).not.toContain(created.id);
     expect(JSON.stringify(telemetry)).not.toContain('PRIVATE MANAGED PROMPT');
     expect(JSON.stringify(telemetry)).not.toContain('provider-secret-value');
+    await first.worker.stop();
+    await reopened.worker.stop();
+    await extensionHost.close();
   });
 });