feat(watcher): polling desteği ekle

CORE_WATCHER_USE_POLLING ve CORE_WATCHER_POLL_INTERVAL_MS ortam
değişkenleri eklendi. Bu değişkenler sayesinde dosya izleyici için
polling modu ve aralığı yapılandırılabilir hale getirildi.

.env.example

@@ -13,6 +13,8 @@ MEDIA_MOVIE_PATH=/media/movie
 ENABLE_API_KEY=false
 API_KEY=
 CORE_WATCHER_DEDUP_WINDOW_MS=15000
+CORE_WATCHER_USE_POLLING=false
+CORE_WATCHER_POLL_INTERVAL_MS=2000
 ENABLE_TA_STEP_LOGS=false
 CLAMAV_AUTO_UPDATE=true
 CLAMAV_FAIL_ON_UPDATE_ERROR=false

services/core/src/config/env.ts

@@ -15,5 +15,7 @@ export const env = {
   enableApiKey: process.env.ENABLE_API_KEY === 'true',
   apiKey: process.env.API_KEY ?? '',
   watcherDedupWindowMs: Number(process.env.CORE_WATCHER_DEDUP_WINDOW_MS ?? 15000),
+  watcherUsePolling: process.env.CORE_WATCHER_USE_POLLING === 'true',
+  watcherPollIntervalMs: Number(process.env.CORE_WATCHER_POLL_INTERVAL_MS ?? 2000),
   isDev: (process.env.NODE_ENV ?? 'development') !== 'production'
 };

services/core/src/watcher/index.ts

@@ -26,7 +26,13 @@ export async function startWatcher(): Promise<void> {
 
   const byPath = new Map(watched.map((w) => [w.path, w.kind]));
   const shouldProcessEvent = createEventDeduper(env.watcherDedupWindowMs);
-  const watcher = chokidar.watch(paths, { ignoreInitial: false, awaitWriteFinish: false, persistent: true });
+  const watcher = chokidar.watch(paths, {
+    ignoreInitial: false,
+    awaitWriteFinish: false,
+    persistent: true,
+    usePolling: env.watcherUsePolling,
+    interval: env.watcherPollIntervalMs
+  });
 
   watcher.on('add', async (p) => {
     if (!isVideoFile(p)) return;
@@ -51,7 +57,9 @@ export async function startWatcher(): Promise<void> {
     await media.MediaFileModel.updateOne({ path: p }, { status: 'MISSING', lastSeenAt: new Date() });
   });
 
-  console.log(`[core] watcher started for: ${paths.join(', ')}`);
+  console.log(
+    `[core] watcher started for: ${paths.join(', ')} (polling=${env.watcherUsePolling ? 'on' : 'off'}, intervalMs=${env.watcherPollIntervalMs})`
+  );
 }
 
 function resolveKind(filePath: string, byPath: Map<string, 'tv' | 'movie' | 'mixed'>): 'tv' | 'movie' {