fix: disable persistent file logging to stop UI stalls/ANRs

Versions 0.0.88+ routed every logger.* call through a synchronous string
build plus a react-native-fs append on the JS thread - capture() was not
gated by __DEV__, so it ran in production. With ~480 call sites across hot
paths (tool loop, LiteRT, downloads, whisper), this contended with the
bridge and contributed to the 20s+ button-lag / ANR reports.

logger.* is now a no-op in release builds (dev still mirrors to the
console). Removes the appendPersistentLog / formatArg / write-queue /
2MB-trim machinery entirely. No behavior change beyond logging.

Co-Authored-By: Dishit Karia <hanmadishit74@gmail.com>

Author: dishit-wednesday

src/utils/logger.ts

@@ -1,72 +1,20 @@
-import RNFS from 'react-native-fs';
-
-const LOG_FILE_NAME = 'download-debug.log';
-const MAX_LOG_FILE_BYTES = 2 * 1024 * 1024;
-const RETAINED_LOG_LINES = 4000;
-
-let writeQueue = Promise.resolve();
-
-function getLogFilePath(): string {
-  return `${RNFS.DocumentDirectoryPath}/${LOG_FILE_NAME}`;
-}
-
-function formatArg(arg: unknown): string {
-  if (arg instanceof Error) {
-    return `${arg.name}: ${arg.message}${arg.stack ? `\n${arg.stack}` : ''}`;
-  }
-  if (typeof arg === 'string') return arg;
-  if (typeof arg === 'number' || typeof arg === 'boolean' || arg == null) return String(arg);
-  try {
-    return JSON.stringify(arg);
-  } catch {
-    return String(arg);
-  }
-}
-
-function appendPersistentLog(level: 'log' | 'warn' | 'error', args: unknown[]): void {
-  const timestamp = new Date().toISOString();
-  const line = `[${timestamp}] ${level.toUpperCase()}: ${args.map(formatArg).join(' ')}\n`;
-
-  writeQueue = writeQueue.then(async () => {
-    try {
-      const path = getLogFilePath();
-      if (await RNFS.exists(path)) {
-        await RNFS.appendFile(path, line, 'utf8');
-      } else {
-        await RNFS.writeFile(path, line, 'utf8');
-      }
-
-      const stat = await RNFS.stat(path);
-      const size = typeof stat.size === 'string' ? Number.parseInt(stat.size, 10) : stat.size;
-      if (size > MAX_LOG_FILE_BYTES) {
-        const content = await RNFS.readFile(path, 'utf8');
-        const trimmed = content.split('\n').filter(Boolean).slice(-RETAINED_LOG_LINES).join('\n');
-        await RNFS.writeFile(path, trimmed ? `${trimmed}\n` : '', 'utf8');
-      }
-    } catch {
-      // Logging must never break app execution.
-    }
-  });
-}
-
-function capture(level: 'log' | 'warn' | 'error', args: unknown[]): void {
-  appendPersistentLog(level, args);
-}
-
+/**
+ * Persistent file logging is disabled. Versions 0.0.88+ wrote every logger.*
+ * call to download-debug.log on the JS thread (a synchronous string build plus a
+ * react-native-fs write per call), which contended with the bridge and
+ * contributed to UI stalls/ANRs. logger.* is now a no-op in release builds; in
+ * dev it still mirrors to the console.
+ */
 const logger = {
   log: (...args: unknown[]): void => {
-    capture('log', args);
     if (__DEV__) console.log(...args); // NOSONAR
   },
   warn: (...args: unknown[]): void => {
-    capture('warn', args);
     if (__DEV__) console.warn(...args); // NOSONAR
   },
   error: (...args: unknown[]): void => {
-    capture('error', args);
     if (__DEV__) console.error(...args); // NOSONAR
   },
-  getLogFilePath,
 };
 
 export default logger;