Keep automatic Hi-Res replacement off by default. Require exact full-duration PCM equivalence across every channel before and after processing. Retain the original through publication and history persistence, restore it on failure or cancellation, and bound WAV format parsing.
Validated with 30 Rust tests, 46 Dart tests, clean analyzer/Clippy checks, Android ARM64 and iOS builds, and iOS simulator startup.
Introduce a per-file Hi-Res authenticity checker and optional auto re-download for flagged fake Hi-Res downloads. Adds Rust checker modules (fft, evidence, FLAC/WAV decoding, tests) and a mobile API (check_hires_authenticity). Wire platform bindings for Android/iOS and PlatformBridge. Add Dart HiResCheckService, UI HiResCheckCard, settings toggle (redownloadFakeHiRes) and integration in the download pipeline to quarantine and replace suspicious files with LOSSLESS when safe. Adds claxon FLAC dependency.
Merge Crowdin changes per key so translations from PR #531 are retained without dropping localization keys added on main. Normalize locale filenames for Flutter, keep incomplete languages behind the 70% production threshold, and retain them in Crowdin for continued translation.
zarzet