feat: migrate local file cache to BunnyCDN storage API

src/controllers/precedent.controller.ts

@@ -146,17 +146,39 @@ export const cachePrecedentDocument = async (req: Request, res: Response) => {
     }
 
     const documentId = String(item.documentId);
-    const dir = path.join(process.cwd(), 'uploads', 'precedents');
+    // 1. BunnyCDN'e Yükle
+    const bunnyZone = process.env.BUNNY_STORAGE_ZONE || '';
+    const bunnyKey = process.env.BUNNY_STORAGE_API_KEY || '';
+    const bunnyCdnUrl = process.env.BUNNY_CDN_URL || '';
     
-    if (!fs.existsSync(dir)) {
-      fs.mkdirSync(dir, { recursive: true });
+    let uploadedToCdn = false;
+    let finalCdnUrl = '';
+
+    if (bunnyZone && bunnyKey) {
+      try {
+        const uploadUrl = `https://storage.bunnycdn.com/${bunnyZone}/precedents/${documentId}.txt`;
+        const response = await fetch(uploadUrl, {
+          method: 'PUT',
+          headers: {
+            'AccessKey': bunnyKey,
+            'Content-Type': 'text/plain; charset=utf-8'
+          },
+          body: content
+        });
+
+        if (response.ok) {
+          uploadedToCdn = true;
+          finalCdnUrl = bunnyCdnUrl ? `${bunnyCdnUrl}/precedents/${documentId}.txt` : uploadUrl;
+          console.log(`[Cache] BunnyCDN'e yüklendi: ${documentId}`);
+        } else {
+          console.error(`[Cache] BunnyCDN Yükleme Hatası: ${response.statusText}`);
+        }
+      } catch (err) {
+        console.error('[Cache] BunnyCDN Bağlantı Hatası:', err);
+      }
+    } else {
+      console.warn('[Cache] BunnyCDN ayarları eksik. Sadece DB kaydı yapılacak.');
     }
-
-    const filePath = path.join(dir, `${documentId}.txt`);
-    
-    // 1. Txt Olarak Kaydet (CDN / Sunucu depolama)
-    if (!fs.existsSync(filePath)) {
-      fs.writeFileSync(filePath, content, 'utf8');
 
     // 2. Supabase DB'ye Metadata Kaydet (Lazy Caching & Meilisearch Indexing)
     try {
@@ -170,6 +192,7 @@ export const cachePrecedentDocument = async (req: Request, res: Response) => {
           tarih: item.tarih || '',
           konu: item.konu || '',
           ozet: item.ozet || '',
+          cdn_url: finalCdnUrl || null,
           created_at: new Date().toISOString()
         }, { onConflict: 'document_id' });
         
@@ -181,7 +204,6 @@ export const cachePrecedentDocument = async (req: Request, res: Response) => {
     } catch (dbErr) {
       console.error('[Cache] Supabase try-catch hatası:', dbErr);
     }
-    }
     
     res.json({ success: true, message: 'Ön belleğe alındı' });
   } catch (error: any) {