switched to Gemma model

app.py

@@ -193,7 +193,7 @@ def generate_post(topic, user_prompt):
     structured_prompt = build_structured_prompt(user_prompt, repo_data)
 
     payload = {
-        "model": "deepseek/deepseek-r1:free",
+        "model": "google/gemma-3-27b-it:free",
         "messages": [
             {"role": "system", "content": "You are an expert social media strategist for projects."},
             {"role": "user", "content": structured_prompt}