fix: align react-dom with react so the app mounts (#18)

A Dependabot bump moved react to 19.2.8 while react-dom stayed on 19.2.7.
React 19 refuses to render a mismatched pair: the published 1.4.3 build threw
"Minified React error #527" at mount and showed a blank page.

Nothing in the pipeline caught it. The unit tests never mount through
react-dom, `tsc --noEmit` and `vite build` both succeed, and the published
bundle byte-matched its source, so every existing check passed on a broken app.

Align react-dom to 19.2.8 and add a test that compares the versions the bundle
actually resolves, not the declared ranges. Verified by mutation: pinning
react-dom back to 19.2.7 fails the new test. The rebuilt app renders with no
console errors.

Author: QuickMythril

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "chibihub",
-  "version": "1.4.3",
+  "version": "1.4.4",
   "private": true,
   "license": "0BSD",
   "description": "A QDN app for Qortium: ChibiHub.",
@@ -19,7 +19,7 @@
     "@fontsource/lexend": "^5.2.11",
     "@vitejs/plugin-react": "^6.0.4",
     "react": "^19.2.8",
-    "react-dom": "^19.2.7",
+    "react-dom": "^19.2.8",
     "typescript": "^6.0.3",
     "vite": "^8.1.5"
   },

package.json

@@ -0,0 +1,20 @@
+import { version as reactVersion } from 'react';
+import { version as reactDomVersion } from 'react-dom';
+import { describe, expect, it } from 'vitest';
+
+/**
+ * React 19 refuses to render when `react` and `react-dom` resolve to different
+ * versions: it throws "Minified React error #527" at mount and the app shows a
+ * blank page. Nothing else in this suite catches that — the unit tests never
+ * mount through react-dom, and both `tsc` and `vite build` succeed.
+ *
+ * It happened for real: a Dependabot bump moved `react` to 19.2.8 while
+ * `react-dom` stayed on 19.2.7, and the published app rendered nothing. These
+ * are the versions the bundle actually resolves, not the declared ranges.
+ */
+describe('react and react-dom stay on the same version', () => {
+  it('resolves both packages to one version', () => {
+    expect(reactVersion).toBeTruthy();
+    expect(reactDomVersion).toBe(reactVersion);
+  });
+});