Update features and dependencies

apps/web/app/api/v1/ai/substitute/route.ts

@@ -1,7 +1,8 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
 import { requireSession } from "@/lib/api-auth";
-import { checkTierLimit, incrementUsage } from "@/lib/tiers";
+import { checkAndIncrementTierLimit, TierLimitError } from "@/lib/tiers";
+import { applyRateLimit } from "@/lib/rate-limit";
 import { substituteIngredient } from "@/lib/ai/features/substitute-ingredient";
 
 const Schema = z.object({
@@ -19,7 +20,17 @@ export async function POST(req: NextRequest) {
   const parsed = Schema.safeParse(body);
   if (!parsed.success) return NextResponse.json({ error: "Validation error" }, { status: 400 });
 
-  await checkTierLimit(session!.user.id, session!.user.tier as "free" | "pro", "aiCall");
+  const rateLimitRes = await applyRateLimit(`ai:substitute:${session!.user.id}`, 10, 60);
+  if (rateLimitRes) return rateLimitRes;
+
+  try {
+    await checkAndIncrementTierLimit(session!.user.id, session!.user.tier as "free" | "pro", "aiCall");
+  } catch (err) {
+    if (err instanceof TierLimitError) {
+      return NextResponse.json({ error: "AI call limit reached for your tier" }, { status: 403 });
+    }
+    throw err;
+  }
 
   const context = parsed.data.recipeTitle
     ? `recipe "${parsed.data.recipeTitle}"`
@@ -31,6 +42,5 @@ export async function POST(req: NextRequest) {
     { provider: parsed.data.provider, model: parsed.data.model }
   );
 
-  await incrementUsage(session!.user.id, "aiCall");
   return NextResponse.json({ substitutions });
 }