chore: fix sentry logging instrumentation and infrastructure alignment

lib/config.ts

@@ -36,9 +36,8 @@ function createConfig() {
     },
 
     errors: {
-      glitchtip: {
-        // Use SENTRY_DSN for both server and client (proxied)
-        dsn: env.SENTRY_DSN,
+        // Use NEXT_PUBLIC_SENTRY_DSN if available (required for browser-side SDK)
+        dsn: env.NEXT_PUBLIC_SENTRY_DSN || (env as any).SENTRY_DSN,
         // The proxied origin used in the frontend
         proxyPath: "/errors",
         enabled: Boolean(env.SENTRY_DSN),

lib/env.ts

@@ -17,6 +17,7 @@ import {
 const envExtension = {
   // Project specific overrides or additions
   AUTH_COOKIE_NAME: z.string().default("mb_gatekeeper_session"),
+  NEXT_PUBLIC_SENTRY_DSN: z.string().optional(),
 };
 
 /**