fix: handle production source failures and reduce ZIP work

src/core/archive-entry.ts

@@ -1,5 +1,17 @@
-import { Archiver, EntryData } from "archiver";
+import { Archiver, EntryData, ZipEntryData } from "archiver";
+import { extname } from "path";
 import { Readable } from "stream";
+
+const compressedExtensions = new Set([
+  ".png", ".jpg", ".jpeg", ".gif", ".webp", ".avif", ".heif", ".heic",
+  ".mp4", ".m4v", ".mov", ".webm", ".mp3", ".m4a", ".aac", ".ogg", ".flac",
+  ".zip", ".gz", ".tgz", ".bz2", ".xz", ".7z", ".rar", ".zst", ".woff", ".woff2",
+]);
+
+/** Store already compressed assets; every entry still passes through anonymization. */
+export function zipEntryOptions(name: string, originalName = name): ZipEntryData {
+  return { name, store: compressedExtensions.has(extname(originalName).toLowerCase()) };
+}
 /** Allow only one active entry; compression and the response provide backpressure. */
 export function appendArchiveEntry(archive: Archiver, source: Readable, options: EntryData): Promise<void> {
   return new Promise((resolve, reject) => {