Fix production dynamic-page modules and trusted email previews

packages/cli/src/build.ts

@@ -202,7 +202,10 @@ export async function runBuild(appRoot: string): Promise<void> {
       .update(source)
       .digest("hex")
       .slice(0, 16);
-    const clientOut = join(clientModulesDir, `${basename(file, ".wrn")}-${clientHash}.mjs`);
+    // Dynamic route names contain brackets, which the production asset handler
+    // deliberately rejects. Keep public artifact names within its safe alphabet.
+    const clientStem = basename(file, ".wrn").replace(/[^A-Za-z0-9._-]/g, "_");
+    const clientOut = join(clientModulesDir, `${clientStem}-${clientHash}.mjs`);
     const clientUrl = `/__wrnexus/client/${basename(clientOut)}`;
     const clientEntry = join(compiledDir, `client${artifactId}.entry.mjs`);