fix(routes): complete post-refactor dependency wiring cleanup

dashcaddy-api/routes/health.js

@@ -8,6 +8,7 @@ const { paginate, parsePaginationParams } = require('../pagination');
 const platformPaths = require('../platform-paths');
 const { resolveServiceUrl } = require('../url-resolver');
 const { success, error: errorResponse } = require('../response-helpers');
+const { ValidationError } = require('../errors');
 
 /**
  * Health routes factory
@@ -54,7 +55,7 @@ module.exports = function({
         url,
         checkedAt: new Date().toISOString()
       };
-    } catch (_) {}
+    } catch { /* ignore */ }
 
     // Fallback to GET
     try {