feat(frontend): add API client, layout, and routing

- Create Axios-based API client with sources, jobs, and dashboard endpoints
- Add responsive Layout component with navigation sidebar
- Set up React Router with Dashboard, Backups, and Settings routes
- Configure TanStack Query provider with default options
- Use lucide-react for navigation icons

frontend/node_modules/pathe/dist/utils.mjs

@@ -0,0 +1,54 @@
+import { n as normalizeWindowsPath, j as join } from './shared/pathe.ff20891b.mjs';
+
+const pathSeparators = /* @__PURE__ */ new Set(["/", "\\", void 0]);
+const normalizedAliasSymbol = Symbol.for("pathe:normalizedAlias");
+function normalizeAliases(_aliases) {
+  if (_aliases[normalizedAliasSymbol]) {
+    return _aliases;
+  }
+  const aliases = Object.fromEntries(
+    Object.entries(_aliases).sort(([a], [b]) => _compareAliases(a, b))
+  );
+  for (const key in aliases) {
+    for (const alias in aliases) {
+      if (alias === key || key.startsWith(alias)) {
+        continue;
+      }
+      if (aliases[key].startsWith(alias) && pathSeparators.has(aliases[key][alias.length])) {
+        aliases[key] = aliases[alias] + aliases[key].slice(alias.length);
+      }
+    }
+  }
+  Object.defineProperty(aliases, normalizedAliasSymbol, {
+    value: true,
+    enumerable: false
+  });
+  return aliases;
+}
+function resolveAlias(path, aliases) {
+  const _path = normalizeWindowsPath(path);
+  aliases = normalizeAliases(aliases);
+  for (const [alias, to] of Object.entries(aliases)) {
+    if (!_path.startsWith(alias)) {
+      continue;
+    }
+    const _alias = hasTrailingSlash(alias) ? alias.slice(0, -1) : alias;
+    if (hasTrailingSlash(_path[_alias.length])) {
+      return join(to, _path.slice(alias.length));
+    }
+  }
+  return _path;
+}
+const FILENAME_RE = /(^|[/\\])([^/\\]+?)(?=(\.[^.]+)?$)/;
+function filename(path) {
+  return path.match(FILENAME_RE)?.[2];
+}
+function _compareAliases(a, b) {
+  return b.split("/").length - a.split("/").length;
+}
+function hasTrailingSlash(path = "/") {
+  const lastChar = path[path.length - 1];
+  return lastChar === "/" || lastChar === "\\";
+}
+
+export { filename, normalizeAliases, resolveAlias };