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/server/src/server/exports.ts

@@ -0,0 +1,7 @@
+// CLI exports for @paseo/server
+export { createPaseoDaemon, type PaseoDaemon, type PaseoDaemonConfig } from "./bootstrap.js";
+export { loadConfig } from "./config.js";
+export { resolvePaseoHome } from "./paseo-home.js";
+export { createRootLogger, type LogLevel, type LogFormat } from "./logger.js";
+export { loadPersistedConfig, type PersistedConfig } from "./persisted-config.js";
+export { DaemonClientV2, type DaemonClientV2Config, type ConnectionState, type DaemonEvent } from "../client/daemon-client-v2.js";