more multi-tenancy

backend/src/config.rs

@@ -34,6 +34,20 @@ pub struct AppConfig {
 }
 
 impl AppConfig {
+    pub fn load_and_log(component: &str) -> Result<Self> {
+        dotenv::dotenv().ok();
+        let config = Self::from_env()?;
+        tracing::info!(
+            component,
+            database_url = %config.redacted_database_url(),
+            pool_size = config.database_max_pool_size,
+            quickwit_enabled = config.quickwit_endpoint.is_some(),
+            s3_bucket = %config.s3_bucket,
+            "loaded backend configuration"
+        );
+        Ok(config)
+    }
+
     pub fn from_env() -> Result<Self> {
         let database_url = env::var("DATABASE_URL").context("DATABASE_URL must be set")?;
         let database_max_pool_size = env::var("DATABASE_MAX_POOL_SIZE")