Integrate OpenRouter for AI-powered code review

Add openrouter-rs dependency, review prompt, and markdown formatting.
Update comment API to accept dynamic body. Adjust devcontainer for
podman compatibility.

src/main.rs

@@ -6,21 +6,19 @@ mod consts;
 mod env;
 mod errors;
 mod gitea;
+mod open_router;
 mod state;
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     let config = env::load_config()?;
-    let bot = Bot::new(config.clone());
+    let bot = Bot::new(config.clone())?;
 
     let (tx, rx) = tokio::sync::mpsc::channel::<WebhookType>(1);
 
-    let app_state = AppState {
-        bot_tx: tx,
-        config,
-    };
+    let app_state = AppState { bot_tx: tx, config };
 
     tokio::try_join!(bot.start(rx), api::start(app_state))?;
 
     Ok(())
-}
+}