compress the mf (#1267)

server.js

@@ -27,7 +27,7 @@ const TSS_BATTLES_DB_PATH = path.join(STORAGE_ROOT, 'tss_battles.db');
 fs.mkdirSync(REPLAYS_PATH, { recursive: true });
 
 function replayDataPath(sessionId) {
-    return path.join(REPLAYS_PATH, String(sessionId).toLowerCase(), 'replay_data.json');
+    return path.join(REPLAYS_PATH, String(sessionId).toLowerCase(), 'replay_data.json.gz');
 }
 
 const app = express();
@@ -1443,7 +1443,7 @@ function readReplayJson(sessionId) {
         return null;
     }
     try {
-        return JSON.parse(fs.readFileSync(replayPath, 'utf-8'));
+        return JSON.parse(zlib.gunzipSync(fs.readFileSync(replayPath)));
     } catch (err) {
         log.warn('Failed to read replay JSON', { sessionId, error: err.message });
         return null;
@@ -2753,7 +2753,7 @@ app.get('/api/match/:sessionId/replay', (req, res) => {
     }
 
     try {
-        const data = JSON.parse(fs.readFileSync(replayPath, 'utf-8'));
+        const data = JSON.parse(zlib.gunzipSync(fs.readFileSync(replayPath)));
         res.json({
             available: true,
             session_id: sessionId,