v0.6.0: Batch mock server logs and reorganize components

Optimize mock server request logging by batching events (~1 per 250ms) via a bounded buffer and background flusher, preventing IPC saturation under high request load. Add regex caching to avoid recompiling patterns per request. Restructure the HandlerState to use Arc<Arc<MockConfig>> for cheaper cloning.

Rename components for clarity: Base64Tool→EncodeHashEncrypt, UnixTimeConverter→DateTimeTool, GeneratorTool→RandomGenerator, and consolidate TaskTracker into clockify/Suite. Update tool definitions with better icons and revised descriptions.