many many fixes

vite.config.js

@@ -0,0 +1,32 @@
+import fs from 'node:fs';
+import { defineConfig } from 'vite';
+
+const VERSION_FILE = new URL('./src/version.json', import.meta.url);
+
+// src/version.json is imported by the app (baked into the bundle) and also
+// published as /version.json, which running clients poll to detect new deploys.
+function versionFilePlugin() {
+  return {
+    name: 'quartiles-version-file',
+    // Dev: always serve the current file contents, uncached
+    configureServer(server) {
+      server.middlewares.use('/version.json', (req, res) => {
+        res.setHeader('Content-Type', 'application/json');
+        res.setHeader('Cache-Control', 'no-store');
+        res.end(fs.readFileSync(VERSION_FILE, 'utf8'));
+      });
+    },
+    // Build: emit dist/version.json
+    generateBundle() {
+      this.emitFile({
+        type: 'asset',
+        fileName: 'version.json',
+        source: fs.readFileSync(VERSION_FILE, 'utf8')
+      });
+    }
+  };
+}
+
+export default defineConfig({
+  plugins: [versionFilePlugin()]
+});