fix: migrate all route path params from :param to {param} syntax

Axum 0.8+ requires {param} capture group syntax.
:param style was causing runtime panic on startup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

imphnen-cms/src/qr/campaigns/infrastructure/http/routes.rs

@@ -32,8 +32,8 @@ pub fn qr_campaigns_routes(pool: Arc<PgPool>) -> Router {
 			"/campaigns",
 			post(create_campaign_handler).get(list_campaigns_handler),
 		)
-		.route("/campaigns/:id/activate", put(activate_campaign_handler))
-		.route("/campaigns/:id", delete(delete_campaign_handler))
+		.route("/campaigns/{id}/activate", put(activate_campaign_handler))
+		.route("/campaigns/{id}", delete(delete_campaign_handler))
 		.route("/campaigns/process-image", post(process_image_handler))
 		.layer(Extension(service))
 		.layer(Extension(pool))

imphnen-cms/src/qr/users/infrastructure/http/routes.rs

@@ -29,8 +29,8 @@ pub fn qr_users_routes(pool: Arc<PgPool>) -> Router {
 	Router::new()
 		.route("/users/me", get(get_me_handler).put(update_me_handler))
 		.route("/users", get(list_users_handler))
-		.route("/users/:id/role", put(update_role_handler))
-		.route("/users/:id", delete(delete_user_handler))
+		.route("/users/{id}/role", put(update_role_handler))
+		.route("/users/{id}", delete(delete_user_handler))
 		.layer(Extension(service))
 		.layer(Extension(pool))
 		.layer(from_fn(qr_auth_middleware))