Disable aggressive static asset caching in development to fix HMR.

Co-authored-by: dennis <dennis@konkol.net>

next.config.ts

@@ -133,7 +133,11 @@ const nextConfig: NextConfig = {
         headers: [
           {
             key: "Cache-Control",
-            value: "public, max-age=31536000, immutable",
+            // In dev, aggressive caching breaks HMR and can brick a tab with stale chunks.
+            value:
+              process.env.NODE_ENV === "production"
+                ? "public, max-age=31536000, immutable"
+                : "no-store",
           },
         ],
       },