fix: persist tender preparation and correct calendar export

server/index.js

@@ -1061,6 +1061,20 @@ const server = http.createServer(async (req, res) => {
       }
     }
 
+    if (url.pathname === '/api/me/tender-state') {
+      const user = userFromAuthHeader(req.headers['authorization']);
+      if (!user) return json(res, 401, { success: false, error: 'oturum yok' });
+      if (req.method === 'GET') return json(res, 200, {success:true, records:store.getTenderStates(user.email)});
+      if (req.method !== 'PUT') return json(res, 405, {success:false,error:'desteklenmeyen metot'});
+      try {
+        const body = await readBody(req, 512 * 1024);
+        const record = store.saveTenderState(user.email, body.key, body.patch, body.snapshot, body.version);
+        return json(res, 200, {success:true, record});
+      } catch (e) {
+        return json(res, e.kod === 'VERSION_CONFLICT' ? 409 : 400, {success:false,error:e.message,kod:e.kod});
+      }
+    }
+
     // --- Kullanıcı verisi (localStorage yerine sunucu tarafı) ---
     if (url.pathname.startsWith('/api/me/data')) {
       const user = userFromAuthHeader(req.headers['authorization']);