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/fraction.js/CHANGELOG.md

@@ -0,0 +1,38 @@
+# CHANGELOG
+
+v5.2.2
+    - Improved documentation and removed unecessary check
+
+v5.2.1:
+  - 2bb7b05: Added negative sign check
+
+v5.2:
+  - 6f9d124: Implemented log and improved simplify
+  - b773e7a: Added named export to TS definition
+  - 70304f9: Fixed merge conflict
+  - 3b940d3: Implemented other comparing functions
+  - 10acdfc: Update README.md
+  - ba41d00: Update README.md
+  - 73ded97: Update README.md
+  - acabc39: Fixed param parsing
+
+v5.0.5:
+  - 2c9d4c2: Improved roundTo() and param parser
+
+v5.0.4:
+  - 39e61e7: Fixed bignum param passing
+
+v5.0.3:
+  - 7d9a3ec: Upgraded bundler for code quality
+
+v5.0.2:
+  - c64b1d6: fixed esm export
+
+v5.0.1:
+  - e440f9c: Fixed CJS export
+  - 9bbdd29: Fixed CJS export
+
+v5.0.0:
+  - ac7cd06: Fixed readme
+  - 33cc9e5: Added crude build
+  - 1adcc76: Release breaking v5.0. Fraction.js now builds on BigInt. The API stays the same as v4, except that the object attributes `n`, `d`, and `s`, are not Number but BigInt and may break code that directly accesses these attributes.