[taskboard] add dispatch control plane

app/api/tasks/[id]/dispatch/route.ts

@@ -0,0 +1,21 @@
+import { NextResponse } from "next/server";
+
+import { dispatchTask } from "@/lib/dispatch";
+
+export async function POST(
+  _request: Request,
+  { params }: { params: Promise<{ id: string }> },
+) {
+  const { id } = await params;
+  const numericId = Number(id);
+  if (!Number.isInteger(numericId) || numericId <= 0) {
+    return NextResponse.json({ error: "invalid_task_id" }, { status: 400 });
+  }
+
+  try {
+    return NextResponse.json(await dispatchTask(numericId));
+  } catch (error) {
+    const message = error instanceof Error ? error.message : String(error);
+    return NextResponse.json({ error: "dispatch_failed", detail: message }, { status: 500 });
+  }
+}