refactor: Remove /ui path prefix

Removed the /ui basePath from Next.js configuration to serve the app at root path:

- Removed basePath: "/ui" from next.config.ts
- Updated all API route calls from /ui/api/* to /api/*
- App now accessible at root path instead of /ui subdirectory

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/(dashboard)/jobs/page.tsx

@@ -53,7 +53,7 @@ export default function JobsPage() {
   const { data: projects, isLoading: isProjectsLoading } = useQuery({
     queryKey: ["projects"],
     queryFn: async (): Promise<ListProjects> => {
-      const res = await fetch("/ui/api/scrapyd/projects");
+      const res = await fetch("/api/scrapyd/projects");
       if (!res.ok) throw new Error("Failed to fetch projects");
       return res.json();
     },
@@ -63,7 +63,7 @@ export default function JobsPage() {
   const { data: jobs, isLoading: isJobsLoading } = useQuery({
     queryKey: ["jobs", selectedProject],
     queryFn: async (): Promise<ListJobs> => {
-      const res = await fetch(`/ui/api/scrapyd/jobs?project=${selectedProject}`);
+      const res = await fetch(`/api/scrapyd/jobs?project=${selectedProject}`);
       if (!res.ok) throw new Error("Failed to fetch jobs");
       return res.json();
     },
@@ -74,7 +74,7 @@ export default function JobsPage() {
   // Cancel job mutation
   const cancelJobMutation = useMutation({
     mutationFn: async (data: { project: string; job: string }) => {
-      const res = await fetch("/ui/api/scrapyd/jobs", {
+      const res = await fetch("/api/scrapyd/jobs", {
         method: "DELETE",
         headers: { "Content-Type": "application/json" },
         body: JSON.stringify(data),