Japanese Filenames Broke a Mac App's Code Signature After DMG Copy

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A Mac app was reported as damaged after distribution, with codesign verification failing on a sealed resource. The developer traced the problem to four Japanese filenames containing voiced sound marks, which were converted from NFC to NFD normalization when the app was copied from a DMG. Because the altered names no longer matched those sealed during signing, the signature check failed even though the names looked identical on screen. The fix bundles the Japanese-named files into a single ASCII-named file that is extracted on first launch with NFC-normalized names. After this change, code signature verification passed following the copy.

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