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/react-hook-form/dist/logic/createFormControl.d.ts

@@ -0,0 +1,18 @@
+import type { FieldValues, UseFormProps, UseFormReturn } from '../types';
+export declare const DEFAULT_FORM_STATE: {
+    submitCount: number;
+    isDirty: boolean;
+    isReady: boolean;
+    isValidating: boolean;
+    isSubmitted: boolean;
+    isSubmitting: boolean;
+    isSubmitSuccessful: boolean;
+    isValid: boolean;
+    touchedFields: {};
+    dirtyFields: {};
+    validatingFields: {};
+};
+export declare function createFormControl<TFieldValues extends FieldValues = FieldValues, TContext = any, TTransformedValues = TFieldValues>(props?: UseFormProps<TFieldValues, TContext, TTransformedValues>): Omit<UseFormReturn<TFieldValues, TContext, TTransformedValues>, 'formState'> & {
+    formControl: Omit<UseFormReturn<TFieldValues, TContext, TTransformedValues>, 'formState'>;
+};
+//# sourceMappingURL=createFormControl.d.ts.map