- discover active macOS dynamic store proxies via scutil before networksetup
- treat missing registry keys and unavailable probe tools as clean absence instead of hard error
- support two-part versions and tag-exact asset patterns in BtbN FFmpeg updates
- normalize BtbN n-prefixed FFmpeg versions in sidecar status checks
- update React DOM types and compatible Rust lock dependencies
- refresh Windows and Linux FFmpeg source URLs and checksums
- cover aria2 asset hashes and Windows npm command execution
- verify Firelink and Companion across tests, builds, and engine payloads