Add React UI with Vite

Dashboard, agents, goals, issues, and projects pages with sidebar
navigation. API client layer, custom hooks, and shared layout
components. Built with Vite and TypeScript.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/pages/Issues.tsx

@@ -0,0 +1,55 @@
+import { useCallback } from "react";
+import { issuesApi } from "../api/issues";
+import { useApi } from "../hooks/useApi";
+import { StatusBadge } from "../components/StatusBadge";
+import { cn } from "../lib/utils";
+
+const priorityColors: Record<string, string> = {
+  critical: "text-red-700 bg-red-50",
+  high: "text-orange-700 bg-orange-50",
+  medium: "text-yellow-700 bg-yellow-50",
+  low: "text-gray-600 bg-gray-50",
+};
+
+export function Issues() {
+  const fetcher = useCallback(() => issuesApi.list(), []);
+  const { data: issues, loading, error } = useApi(fetcher);
+
+  return (
+    <div>
+      <h2 className="text-2xl font-bold mb-4">Issues</h2>
+      {loading && <p className="text-gray-500">Loading...</p>}
+      {error && <p className="text-red-600">{error.message}</p>}
+      {issues && issues.length === 0 && <p className="text-gray-500">No issues yet.</p>}
+      {issues && issues.length > 0 && (
+        <div className="grid gap-4">
+          {issues.map((issue) => (
+            <div key={issue.id} className="bg-white rounded-lg border border-gray-200 p-4">
+              <div className="flex items-center justify-between">
+                <div>
+                  <h3 className="font-semibold">{issue.title}</h3>
+                  {issue.description && (
+                    <p className="text-sm text-gray-500 mt-1 line-clamp-1">
+                      {issue.description}
+                    </p>
+                  )}
+                </div>
+                <div className="flex items-center gap-3">
+                  <span
+                    className={cn(
+                      "inline-flex items-center rounded-full px-2.5 py-0.5 text-xs font-medium",
+                      priorityColors[issue.priority] ?? "text-gray-600 bg-gray-50"
+                    )}
+                  >
+                    {issue.priority}
+                  </span>
+                  <StatusBadge status={issue.status} />
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}