[taskboard] add dispatch control plane

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

@@ -0,0 +1,26 @@
+import { NextResponse } from "next/server";
+
+import { updateTask } from "@/lib/tasks";
+
+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 });
+  }
+
+  const task = await updateTask(numericId, {
+    dispatch_state: "acknowledged",
+    acknowledged_at: new Date().toISOString(),
+    status: "In Progress",
+  });
+
+  if (!task) {
+    return NextResponse.json({ error: "task_not_found" }, { status: 404 });
+  }
+
+  return NextResponse.json(task);
+}