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On case-insensitive filesystems, entries created before we started lowercasing the content paths in v0.123 are the same file as today's lowercased cache key, and were removed on every hugo --gc. Fixes #15101 Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>