fix: fixes gemini model

app.py

@@ -179,7 +179,7 @@ class RepoAnalyzer:
         self.chat_history = []
 
     async def stream_gemini_response(
-        self, prompt: str, api_key: str = None, model: str = "gemini-pro"
+        self, prompt: str, api_key: str = None, model: str = "gemini-1.5-flash"
     ) -> AsyncGenerator[str, None]:
         """Stream response dari Gemini API menggunakan OpenAI client"""
         try:
@@ -191,6 +191,8 @@ class RepoAnalyzer:
             # Gunakan OpenAI client untuk Gemini
             client = AsyncOpenAI(api_key=actual_key, base_url=GEMINI_BASE_URL)
 
+            api_model = f"models/{model}" if not model.startswith("models/") else model
+
             # Tambahkan konteks repository jika ada
             messages = [
                 {
@@ -209,7 +211,7 @@ class RepoAnalyzer:
 
             try:
                 stream = await client.chat.completions.create(
-                    model=model,
+                    model=api_model,
                     messages=messages,
                     stream=True,
                     temperature=0.7,