feat: integrate Peg AI wellness coach

server/app/config.py

@@ -9,6 +9,10 @@ class Settings(BaseSettings):
     access_token_minutes: int = 30
     allowed_origins: str = "http://localhost:8081,http://localhost:19006"
     environment: str = "development"
+    ai_base_url: str = "http://localhost:11434/v1"
+    ai_api_key: str = ""
+    ai_model: str = "llama3.2:3b"
+    ai_timeout_seconds: float = 20.0
     model_config = SettingsConfigDict(env_file=".env", extra="ignore")
 
     @property
@@ -19,4 +23,3 @@ class Settings(BaseSettings):
 @lru_cache
 def get_settings() -> Settings:
     return Settings()
-