fix: proxy MCP and expose EKAP verification gates

server/index.js

@@ -942,7 +942,8 @@ const server = http.createServer(async (req, res) => {
         if (urunAramaCache.size > 200) urunAramaCache.delete(urunAramaCache.keys().next().value);
         return json(res, 200, { success: true, ...out });
       } catch (e) {
-        return json(res, 502, { success: false, error: e.message });
+        const failure = sourceFailure(e);
+        return json(res, failure.status, failure.body);
       }
     }
     // OKAS kataloğunda ad ile arama — idarenin kendi sınıflandırma kodunu bulmak için
@@ -957,7 +958,8 @@ const server = http.createServer(async (req, res) => {
         urunAramaCache.set(anahtar, { zaman: Date.now(), veri: kalemler });
         return json(res, 200, { success: true, kalemler });
       } catch (e) {
-        return json(res, 502, { success: false, error: e.message });
+        const failure = sourceFailure(e);
+        return json(res, failure.status, failure.body);
       }
     }
     // --- Anlamsal uyum bonusu: profil metni ↔ havuz (sunucuda gömme) ---
@@ -1053,7 +1055,8 @@ const server = http.createServer(async (req, res) => {
         );
         return json(res, 200, { success: true, ...out });
       } catch (e) {
-        return json(res, 502, { success: false, error: e.message });
+        const failure = sourceFailure(e);
+        return json(res, failure.status, failure.body);
       }
     }
     if (url.pathname === '/api/kik/karar') {
@@ -1063,7 +1066,8 @@ const server = http.createServer(async (req, res) => {
         const metin = await kararMetni(id);
         return json(res, 200, { success: true, id, metin });
       } catch (e) {
-        return json(res, 502, { success: false, error: e.message });
+        const failure = sourceFailure(e);
+        return json(res, failure.status, failure.body);
       }
     }