fix: audit fixes — tier-quota bypass, webhook SSRF, auth hardening, pagination, a11y

Full audit (bugs/UI-UX/backend/feature-gap) turned up a money-leak AI quota
bypass, webhook SSRF, and a long tail of missing pagination/auth/a11y work.
Fixes land together since HANDOFF.md tracked them as one backlog.

- AI routes charge tier quota before generating; nutrition POST is author-only
- Webhook dispatch re-validates URL per delivery (SSRF/DNS-rebinding), treats
  redirects as failures; recipe.published now actually dispatches
- New indexes/unique constraints on recipes, meal-planning, comments FK cascade
- Recipe PUT/restore snapshot only inside the transaction, after validation
- Recipe DELETE cleans up S3 objects (recipe + review photos)
- Optimistic UI (favorite/star/follow/shopping-list) rolls back on failure
- Upload presign enforces file size cap + per-tier storage quota
- Route-level loading/error/not-found states across (app), admin, and root
- middleware.ts guards (app)/admin; requireAdmin checks DB role, not cached
  session; rate limiting applied to both session and API-key branches,
  bucketed per key; Stripe webhook dedupes by event id
- Pagination added to recipes, feed, profile, comments, pantry, admin tables
- Nav shows real avatar + profile link + dark-mode toggle; destructive actions
  standardized on AlertDialog
- Unsaved-changes guard + real ingredient/step validation on recipe form;
  canonical /recipes/[id] used in-app; next/image migration; aria-labels and
  alt text across icon buttons, avatars, recipe photos
- packages/api-types removed (zero callers, too drifted to safely rewire);
  openapi.ts and ai-keys error shape drift fixed; BYOK decrypt failures now
  surface instead of silently falling back to the platform key

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

apps/web/app/api/v1/pantry/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
-import { db, pantryItems, eq, desc } from "@epicure/db";
+import { db, pantryItems, eq, desc, sql } from "@epicure/db";
 import { requireSession } from "@/lib/api-auth";
 
 const Schema = z.object({
@@ -10,16 +10,32 @@ const Schema = z.object({
   expiresAt: z.string().datetime().optional(),
 });
 
-export async function GET(_req: NextRequest) {
+export async function GET(req: NextRequest) {
   const { session, response } = await requireSession();
   if (response) return response;
 
-  const items = await db.query.pantryItems.findMany({
-    where: eq(pantryItems.userId, session!.user.id),
-    orderBy: desc(pantryItems.createdAt),
-  });
+  const { searchParams } = req.nextUrl;
+  const limitRaw = parseInt(searchParams.get("limit") ?? "50");
+  const limit = Math.min(Number.isNaN(limitRaw) ? 50 : Math.max(1, limitRaw), 100);
+  const offsetRaw = parseInt(searchParams.get("offset") ?? "0");
+  const offset = Number.isNaN(offsetRaw) ? 0 : Math.max(0, offsetRaw);
 
-  return NextResponse.json(items);
+  const [items, totalRow] = await Promise.all([
+    db.query.pantryItems.findMany({
+      where: eq(pantryItems.userId, session!.user.id),
+      orderBy: desc(pantryItems.createdAt),
+      limit,
+      offset,
+    }),
+    db
+      .select({ total: sql<number>`count(*)::int` })
+      .from(pantryItems)
+      .where(eq(pantryItems.userId, session!.user.id)),
+  ]);
+
+  const total = totalRow[0]?.total ?? 0;
+
+  return NextResponse.json({ data: items, total, limit, offset });
 }
 
 export async function POST(req: NextRequest) {