fix: CI workflow, password reset flow, health/limits in services, session refactor, dead mixin stub cleanup

backend/chat-service/src/main.rs

@@ -1,7 +1,12 @@
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
     dotenvy::dotenv().ok();
-    tracing_subscriber::fmt::init();
+    tracing_subscriber::fmt()
+        .with_env_filter(
+            tracing_subscriber::EnvFilter::try_from_default_env()
+                .unwrap_or_else(|_| tracing_subscriber::EnvFilter::new("info")),
+        )
+        .init();
     let cfg = chat_service::config::Config::from_env()?;
     cfg.validate()?;
     let (app, state) = chat_service::build_app(&cfg);