build: migrate build system to Vite and test runner to Vitest & Remove depracated husky usage (#2703)

- Replace Webpack with Vite for faster client bundling and HMR.
- Migrate tests from Jest to Vitest and update configuration.
- Update Web Worker instantiation to standard ESM syntax.
- Implement Env utility in `src/core` for safe, hybrid environment
variable access (Vite vs Node).
- Refactor configuration loaders to remove direct `process.env`
dependencies in shared code.
- Update TypeScript environment definitions and project scripts for the
new toolchain.
- Remove the [depracated usage of the
husky](https://github.com/typicode/husky/releases/tag/v9.0.1).

## Description:

migrate build system to Vite and test runner to Vitest & Remove
depracated husky usage

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [ ] I have added relevant tests to the test directory
- [X] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

## Please put your Discord username so you can be contacted if a bug or
regression is found:

wraith4081

---------

Co-authored-by: evanpelle <evanpelle@gmail.com>

scripts/sync-assets.mjs

@@ -0,0 +1,59 @@
+import { promises as fs } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const root = path.resolve(__dirname, "..");
+
+const resourcesDir = path.join(root, "resources");
+const assetsDir = path.join(root, "src", "assets");
+const dataDir = path.join(assetsDir, "data");
+const langDir = path.join(assetsDir, "lang");
+
+const dataFiles = ["version.txt", "countries.json", "QuickChat.json"];
+
+async function ensureDir(dir) {
+  await fs.mkdir(dir, { recursive: true });
+}
+
+async function copyFile(src, dest) {
+  await ensureDir(path.dirname(dest));
+  await fs.copyFile(src, dest);
+}
+
+async function copyDataFiles() {
+  await Promise.all(
+    dataFiles.map((name) =>
+      copyFile(path.join(resourcesDir, name), path.join(dataDir, name)),
+    ),
+  );
+}
+
+async function copyLangFiles() {
+  const sourceDir = path.join(resourcesDir, "lang");
+  const entries = await fs.readdir(sourceDir, { withFileTypes: true });
+  await Promise.all(
+    entries
+      .filter((entry) => entry.isFile() && entry.name.endsWith(".json"))
+      .map((entry) =>
+        copyFile(
+          path.join(sourceDir, entry.name),
+          path.join(langDir, entry.name),
+        ),
+      ),
+  );
+}
+
+async function main() {
+  await ensureDir(dataDir);
+  await ensureDir(langDir);
+  await copyDataFiles();
+  await copyLangFiles();
+  console.log("Synced resources to src/assets.");
+}
+
+main().catch((error) => {
+  console.error("sync-assets failed:", error);
+  process.exit(1);
+});