fix: improve GLM API error surfacing and normalize base URL trailing slash

Fix ESM ReferenceError: __dirname is not defined

Fix: Ensure static files are served and NODE_ENV is forced to production on HF

Final Fix: Robust Docker Multi-Stage and Dynamic Port for Hugging Face

Optimize Docker: Switch to multi-stage build for faster and leaner deployment

Fix HF Spaces 'stuck on starting': bind to 0.0.0.0 and add Redis startup check

Configure for Hugging Face Spaces (Docker, Redis, Dynamic Origin)

Initial commit: Rebranded to GLMPilot and migrated to GLM-5 API