Harden native, agent and Docker lifecycle paths with tracked update verification, rollback and preflight checks, safe uninstall semantics, and health verification. Add shared protocol tests, installer CI gates, and lifecycle documentation. Thanks: INSOLVE (Honorary); Marco Jakobs (@jacotec); MyNameisStitch (@MyNameisStitch); Redspin (@playerumpknow)
Replace invalid prototype getter syntax in local-files.js and mesh-files.js so the file transfer modal loads in browsers. Panel updates patch betterdesk-server.service via a passwordless-sudo helper instead of interactive sudo tee. Refs #217