- Refactored HTTP tunneling protocol to use `protocol.Envelope` for better extensibility.
- Implemented support for message types including HTTP requests, stream handling, and responses.
- Added common security headers like HSTS and X-Forwarded-For processing for improved security and identity handling.
- Introduced GitHub Actions workflow to build and publish Docker images to GHCR.
- Added new protocol structures for stream-based communication in anticipation of future WebSocket/TCP tunneling.
- Updated `go.sum` to remove unused dependencies and reflect new changes.
- Refactored `DISCUSSION_TEMPLATE.md` to enhance clarity and structure.
- Simplified sections and eliminated redundancy for better usability.
- Improved bilingual (Korean/English) guidance for consistency.
- Added `DISCUSSION_TEMPLATE.md` for GitHub Discussions announcements.
- Introduced `DISCUSSION_001_PROJECT_INTRODUCTION.md` as a draft for the project introduction, architecture, and roadmap.
- Templates provide bilingual (Korean/English) guidance for consistency and accessibility.
