fix(cli): remove unused createServer import and fix flaky port test

- Remove unused `createServer` import from web-dir.ts (only `Socket`
  is used) — fixes the lint error in CI
- Mock `isPortAvailable` in the "uses port 3000" test so it doesn't
  depend on port 3000 actually being free on the host machine

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/cli/__tests__/commands/init.test.ts

@@ -42,6 +42,10 @@ describe("init command", () => {
     tmpDir = mkdtempSync(join(tmpdir(), "ao-init-test-"));
     const outputPath = join(tmpDir, "agent-orchestrator.yaml");
 
+    // Mock isPortAvailable so test doesn't depend on actual port 3000 being free
+    const webDirModule = await import("../../src/lib/web-dir.js");
+    vi.spyOn(webDirModule, "isPortAvailable").mockResolvedValue(true);
+
     const program = new Command();
     program.exitOverride();
     registerInit(program);

packages/cli/src/lib/web-dir.ts

@@ -3,7 +3,7 @@
  * Shared utility to avoid duplication between dashboard.ts and start.ts.
  */
 
-import { createServer, Socket } from "node:net";
+import { Socket } from "node:net";
 import { createRequire } from "node:module";
 import { fileURLToPath } from "node:url";
 import { resolve, dirname } from "node:path";