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/tailwindcss/lib/util/parseDependency.js

@@ -0,0 +1,47 @@
+// @ts-check
+/**
+ * @typedef {{type: 'dependency', file: string} | {type: 'dir-dependency', dir: string, glob: string}} Dependency
+ */ /**
+ *
+ * @param {import('../lib/content.js').ContentPath} contentPath
+ * @returns {Dependency[]}
+ */ "use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "default", {
+    enumerable: true,
+    get: function() {
+        return parseDependency;
+    }
+});
+function parseDependency(contentPath) {
+    if (contentPath.ignore) {
+        return [];
+    }
+    if (!contentPath.glob) {
+        return [
+            {
+                type: "dependency",
+                file: contentPath.base
+            }
+        ];
+    }
+    if (process.env.ROLLUP_WATCH === "true") {
+        // rollup-plugin-postcss does not support dir-dependency messages
+        // but directories can be watched in the same way as files
+        return [
+            {
+                type: "dependency",
+                file: contentPath.base
+            }
+        ];
+    }
+    return [
+        {
+            type: "dir-dependency",
+            dir: contentPath.base,
+            glob: contentPath.glob
+        }
+    ];
+}