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/semver/package.json

@@ -0,0 +1,38 @@
+{
+  "name": "semver",
+  "version": "6.3.1",
+  "description": "The semantic version parser used by npm.",
+  "main": "semver.js",
+  "scripts": {
+    "test": "tap test/ --100 --timeout=30",
+    "lint": "echo linting disabled",
+    "postlint": "template-oss-check",
+    "template-oss-apply": "template-oss-apply --force",
+    "lintfix": "npm run lint -- --fix",
+    "snap": "tap test/ --100 --timeout=30",
+    "posttest": "npm run lint"
+  },
+  "devDependencies": {
+    "@npmcli/template-oss": "4.17.0",
+    "tap": "^12.7.0"
+  },
+  "license": "ISC",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/npm/node-semver.git"
+  },
+  "bin": {
+    "semver": "./bin/semver.js"
+  },
+  "files": [
+    "bin",
+    "range.bnf",
+    "semver.js"
+  ],
+  "author": "GitHub Inc.",
+  "templateOSS": {
+    "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",
+    "content": "./scripts/template-oss",
+    "version": "4.17.0"
+  }
+}