- Device labels: lowercase, no whitespace, only a-z 0-9 - _ (enforced at config time)
- Session IDs removed: device label is the sole identifier
- Routes changed: /sessions/:id → /devices/:label
- Removed commands: click, type, find-window, wait-for-window, label, old version, server-version
- Renamed: status → version (compares relay/remote.py/client commits)
- Unified screenshot: takes 'screen' or a window label as argument
- Windows listed with human-readable labels (same format as device labels)
- Single instance enforcement via PID lock file
- Removed input.rs (click/type functionality)
- All docs and code in English
- Protocol: Hello.label is now required (String, not Option<String>)
- Client auto-migrates invalid labels on startup
- install.ps1: place exe on Desktop instead of TEMP, start with visible window
- main.rs: banner on startup, [CMD]/[OK]/[ERR] prefixed logs with HH:MM:SS timestamps
- Config: switch from JSON to TOML (config.toml in %APPDATA%\helios-remote\)
- First-run wizard prompts for Relay URL + API Key (relay_code -> api_key)
- Add chrono + toml deps to Cargo.toml
