fix: resolve bugs 01 through 08 and set Ollama TTL to 1h

app/ai.py

@@ -576,7 +576,7 @@ async def generate_lesson_ai_debrief(
 
     try:
         client = get_ollama_client()
-        resp = await client.post(f"{config.OLLAMA_BASE_URL}/api/generate", json=payload, timeout=25.0)
+        resp = await client.post(f"{config.OLLAMA_BASE_URL}/api/generate", json=payload, timeout=10.0)
         if resp.status_code == 200:
             raw_response = resp.json().get("response", "{}")
             # Parse JSON