Support resumable game folder uploads and remove DLC declarations

src/lib/server/game-files/storage.ts

@@ -63,13 +63,18 @@ export async function assertRegularPath(root: string, path: string, allowMissing
     return result;
 }
 
-export async function verifyGameFile(root: string, file: GameFileEntry): Promise<void> {
+/** Compute a file digest without buffering game archives in memory. */
+export async function hashGameFile(root: string, file: Pick<GameFileEntry, 'path' | 'size'>): Promise<string> {
     const path = await assertRegularPath(root, file.path);
     const info = await stat(path);
     if (info.size !== file.size) throw new Error(`Size verification failed for ${file.path}.`);
     const hash = createHash('sha256');
     for await (const chunk of createReadStream(path)) hash.update(chunk);
-    if (hash.digest('hex') !== file.sha256) throw new Error(`Checksum verification failed for ${file.path}.`);
+    return hash.digest('hex');
+}
+
+export async function verifyGameFile(root: string, file: GameFileEntry): Promise<void> {
+    if (await hashGameFile(root, file) !== file.sha256) throw new Error(`Checksum verification failed for ${file.path}.`);
 }
 
 /** Stream to a private temporary file; publish only after byte count and SHA256 match. */