Replace callback-based restarts with a coalescing state machine that keeps the active child tracked through tree termination and prevents overlapping kill/start cycles.
Block replacement starts after kill failures or shutdown signals, preserve stale-exit protection and source watch coverage, and add deterministic regression tests for restart races.
Add live English and German interface switching, animated navigation and history controls, improved update changelogs, remembered upload folders, reliable repeated hot reloads, and refreshed public documentation.