logs command was using journalctl -f (follow) which blocks forever.
Split into three commands:
- logs [N]: show last N lines and exit (default 30)
- logs-follow [N]: tail + follow (old behavior)
- logs-all: full dump
- Add proxyctl CLI script for systemd service management
- Add systemd user service file for background operation
- Fix standalone LS kill: properly track real LS PID via pgrep
and use sudo kill for cross-user cleanup on shutdown
- Remove deprecated scripts (dns-redirect, iptables-redirect,
mitm-wrapper, standalone-ls, parse-snapshot)
- Disable tool stripping in MITM for tool call investigation
- Update GEMINI.md with CLI tools documentation
