test(cli): add zx TDD infrastructure and phase 1 tests

- Install zx as devDependency for E2E testing
- Create tests/ directory with setup utilities
- Add setup.ts with test context helpers:
  - Random port generation (never 6767)
  - Temp directory creation for PASEO_HOME and workDir
  - Daemon startup/waitForDaemon helper (WebSocket only)
  - Cleanup function
  - paseo() helper to run CLI commands against test daemon
- Add Phase 1 foundation tests (01-foundation.test.mts):
  - Test paseo --version outputs version
  - Test paseo --help shows commands
- Add test runner (run-all.mts) that discovers and runs all tests
- Add test:e2e script to package.json

packages/cli/src/commands/daemon/index.ts

@@ -0,0 +1,17 @@
+import { Command } from 'commander'
+import { startCommand } from './start.js'
+import { statusCommand } from './status.js'
+import { stopCommand } from './stop.js'
+import { restartCommand } from './restart.js'
+
+export function createDaemonCommand(): Command {
+  const daemon = new Command('daemon')
+    .description('Manage the Paseo daemon')
+
+  daemon.addCommand(startCommand())
+  daemon.addCommand(statusCommand())
+  daemon.addCommand(stopCommand())
+  daemon.addCommand(restartCommand())
+
+  return daemon
+}