feat: add AI settings controls

src/app/api/ai-event/route.ts

@@ -2,6 +2,7 @@ import { headers } from "next/headers";
 import { NextResponse } from "next/server";
 import { auth } from "@/auth";
 import { buildMultimodalMessages } from "@/lib/ai-event-messages";
+import { getAiDisabledMessage, isAdminAiEnabled } from "@/lib/ai-feature-flags";
 import { extractJsonFromText } from "@/lib/json-utils";
 import { openRouterClient } from "@/lib/openrouter-client";
 import { AiEventRequestSchema, AiEventResponseSchema } from "@/lib/types";
@@ -86,6 +87,13 @@ const callMultimodal = async (
 };
 
 export async function POST(request: Request) {
+	if (!isAdminAiEnabled()) {
+		return NextResponse.json(
+			{ error: getAiDisabledMessage() },
+			{ status: 403 },
+		);
+	}
+
 	const session = await auth.api.getSession({
 		headers: await headers(),
 	});