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getMaxFileSizeBytes() (general_max_file_size_mb, default 50MB) was only read by adminSettings.js to display the value. The admin upload routes streamed against a hardcoded ceiling instead, so the dropzone's "max. 50MB pro Datei" was never enforced: - adminPhotos.js POST /:eventId/upload -> 10GB hardcoded - adminPhotos.js POST /:eventId/chunked-upload/init -> 10GB hardcoded - v1/events.js POST /events/:id/photos -> 100MB hardcoded Resolve the cap per request (it is admin-configurable at runtime) and build the multer instance from it, mirroring what gallery.js and adminTransfers.js already do. The 400 names the configured limit and reuses gallery.js's exact error string so the frontend surfaces it identically. getMaxFileSizeBytes() clamps to MAX_ALLOWED_FILE_SIZE_MB, so the 10GB hard ceiling still bounds everything. gallery.js (guest upload) already enforced this correctly and is unchanged -- the report's claim that it did not is stale. Interpretation: general_max_file_size_mb is a single per-file cap with no photo/video split, and gallery.js already applies it blanket to guest video uploads, so admin video uploads now share it too. On a default install that means a 200MB video needs the setting raised first -- which is what the UI has been advertising all along. Refs testplan REPORT.md #1 (Part 7.06).