feat: add support for user registration toggle and Traefik integration in Docker setup

k-tv-backend/api/src/routes/config.rs

@@ -1,4 +1,6 @@
-use axum::{Json, Router, routing::get};
+use axum::{Json, Router, extract::State, routing::get};
+use std::sync::Arc;
+use crate::config::Config;
 use crate::dto::ConfigResponse;
 use crate::state::AppState;
 
@@ -6,8 +8,8 @@ pub fn router() -> Router<AppState> {
     Router::new().route("/", get(get_config))
 }
 
-async fn get_config() -> Json<ConfigResponse> {
+async fn get_config(State(config): State<Arc<Config>>) -> Json<ConfigResponse> {
     Json(ConfigResponse {
-        allow_registration: true, // Default to true for template
+        allow_registration: config.allow_registration,
     })
 }