refactor: separate standalone Vite wiring and provider middleware

scripts/qa-firstrun-mutations.mjs

@@ -13,7 +13,7 @@
  *
  * Every touched file is restored on exit, including on failure.
  *
- * NOTE: two mutations edit vite.config.js, and a running dev server watches that
+ * NOTE: two mutations edit server/providers/local.js, and a running dev server watches that
  * file and restarts on every write. Writes are therefore content-guarded below
  * so the file is touched exactly twice per mutation instead of on every
  * iteration — enough that a dev server survives, but expect it to restart. If
@@ -31,7 +31,7 @@ const FILES = {
   module: path.join(ROOT, 'src', 'firstRunExperience.js'),
   html: path.join(ROOT, 'index.html'),
   css: path.join(ROOT, 'style.css'),
-  vite: path.join(ROOT, 'vite.config.js'),
+  vite: path.join(ROOT, 'server/providers/local.js'),
   main: path.join(ROOT, 'src', 'main.js'),
   ui: path.join(ROOT, 'src', 'ui.js'),
   docs: path.join(ROOT, 'docs', 'CURRENT-STATE.md'),