fix: make Gemini service resilient to missing API key in CI/CD

Author: Edge-Explorer

.github/workflows/ci.yml

@@ -25,6 +25,8 @@ jobs:
           pip install pytest httpx
           
       - name: Run Backend Tests
+        env:
+          GEMINI_API_KEY: ${{ secrets.GEMINI_API_KEY }}
         run: |
           cd backend
           pytest tests/ --disable-warnings

backend/services/gemini_service.py

@@ -10,7 +10,12 @@
 
 class GeminiService:
     def __init__(self):
-        self.client = genai.Client(api_key=os.getenv("GEMINI_API_KEY"))
+        api_key = os.getenv("GEMINI_API_KEY")
+        if not api_key:
+            print("WARNING: GEMINI_API_KEY not found in environment. AI services will be unavailable.")
+            self.client = None
+        else:
+            self.client = genai.Client(api_key=api_key)
         self.model_name = "gemini-2.0-flash"
 
     async def generate_text(self, prompt: str) -> str: