Add check for ollama env

src/main.rs

@@ -1,6 +1,6 @@
 use std::env;
 use poise::serenity_prelude as sere;
-use tracing::{info, error, debug, trace};
+use tracing::{info, error, debug, trace, warn};
 use tracing_subscriber::EnvFilter;
 pub mod commands;
 pub mod event_handler;
@@ -48,6 +48,10 @@ async fn main() {
     let token = env::var("TG_BOT_DISCORD_TOKEN").expect("Expected a token in the environment");
     trace!("Token loaded");
 
+    if let Err(_) = env::var("TG_BOT_OLLAMA_HOST") {
+        warn!("TG_BOT_OLLAMA_HOST not set, AI commands will not work.");
+    }
+
     
 
     info!("Starting bot...");