feat(docs): show API routes on overview

docs/components/api-overview.tsx

@@ -0,0 +1,65 @@
+import Link from "next/link";
+
+import { getOpenAPIOperations } from "@/lib/openapi-operations";
+
+const methodColors: Record<string, string> = {
+  GET: "bg-emerald-100 text-emerald-700",
+  POST: "bg-blue-100 text-blue-700",
+  PUT: "bg-amber-100 text-amber-700",
+  PATCH: "bg-purple-100 text-purple-700",
+  DELETE: "bg-rose-100 text-rose-700",
+};
+
+function MethodBadge({ method }: { method: string }) {
+  const color = methodColors[method] ?? "bg-slate-100 text-slate-700";
+
+  return (
+    <span
+      className={`font-semibold uppercase tracking-wide text-xs px-2 py-1 rounded ${color}`}
+    >
+      {method}
+    </span>
+  );
+}
+
+export function APIOverviewTable() {
+  const operations = getOpenAPIOperations();
+
+  if (operations.length === 0) {
+    return null;
+  }
+
+  return (
+    <div className="not-prose mt-6 overflow-x-auto">
+      <table className="w-full border-separate border-spacing-y-2 text-sm">
+        <thead className="text-left text-muted-foreground">
+          <tr>
+            <th className="px-3 py-2 font-medium">路径</th>
+            <th className="px-3 py-2 font-medium">方法</th>
+            <th className="px-3 py-2 font-medium">摘要</th>
+          </tr>
+        </thead>
+        <tbody>
+          {operations.map((operation) => (
+            <tr
+              key={`${operation.method}-${operation.route}`}
+              className="bg-muted/30"
+            >
+              <td className="px-3 py-2 align-top font-mono">
+                <Link className="hover:underline" href={operation.href}>
+                  {operation.route}
+                </Link>
+              </td>
+              <td className="px-3 py-2 align-top">
+                <MethodBadge method={operation.method} />
+              </td>
+              <td className="px-3 py-2 align-top text-muted-foreground">
+                {operation.summary || "—"}
+              </td>
+            </tr>
+          ))}
+        </tbody>
+      </table>
+    </div>
+  );
+}