chore: update redirects to include domain canonicalization and correct SPA fallback path

Author: WanderleeDev

projects/demo-ngx-theme-stack/public/_redirects

@@ -1 +1,5 @@
-/* /index.csr 200
+# 1. SEO: Redirigir de pages.dev al dominio personalizado
+https://demo-ngx-theme-stack.pages.dev/* https://demo-ngx-theme-stack.wanderlee.site/:splat 301
+
+# 2. SPA Fallback: redirige todo al archivo físico index.csr.html (Rewrite)
+/* /index.csr.html 200