fix(i18n): harden locale validation and fix missing translation tags

sentry.server.config.ts

@@ -5,6 +5,10 @@ const dsn = process.env.SENTRY_DSN;
 Sentry.init({
   dsn,
   enabled: Boolean(dsn),
-  tracesSampleRate: 0,
-});
 
+  // Adjust this value in production, or use tracesSampler for greater control
+  tracesSampleRate: 1,
+
+  // Setting this option to true will print useful information to the console while you're setting up Sentry.
+  debug: false,
+});