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/package.json

@@ -7,15 +7,19 @@
     "paseo": "./bin/paseo"
   },
   "scripts": {
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit",
+    "test:e2e": "npx zx tests/run-all.mts"
   },
   "dependencies": {
     "@paseo/server": "*",
+    "chalk": "^5.3.0",
     "commander": "^12.0.0",
-    "chalk": "^5.3.0"
+    "ws": "^8.14.2"
   },
   "devDependencies": {
+    "@types/ws": "^8.5.8",
+    "tsx": "^4.6.0",
     "typescript": "^5.2.2",
-    "tsx": "^4.6.0"
+    "zx": "^8.8.5"
   }
 }