- gRPC integration: slug edit handling, get sessions by user, and session requests from gRPC server
- Refactor gRPC client: simplify processEventStream and handle authenticated user info
- Session management improvements: use session key for registry, forwarder session termination, inject SessionRegistry interface
- SSH enhancements: add headless mode support for SSH -N connections
- Bug fixes:
- prevent subdomain changes to already-in-use subdomains
- fix startup order and environment variable keys
- atomic ClaimPort() to prevent race conditions
- Refactors:
- consolidate error handling
- replace Get/Set patterns with idiomatic Go interfaces
- change enums from string to int
- CI cleanup: remove renovate bot
Reviewed-on: #65
