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/meal-plans/[weekStart]/entries/route.ts

@@ -1,6 +1,6 @@
 import { NextRequest, NextResponse } from "next/server";
 import { z } from "zod";
-import { db, mealPlans, mealPlanEntries, eq, and } from "@epicure/db";
+import { db, mealPlans, mealPlanEntries, recipes, eq, and, or, ne } from "@epicure/db";
 import { requireSession } from "@/lib/api-auth";
 import { dispatchWebhook } from "@/lib/webhooks";
 
@@ -34,6 +34,16 @@ export async function POST(req: NextRequest, { params }: Params) {
   const parsed = Schema.safeParse(body);
   if (!parsed.success) return NextResponse.json({ error: "Validation error" }, { status: 400 });
 
+  if (parsed.data.recipeId) {
+    const recipe = await db.query.recipes.findFirst({
+      where: and(
+        eq(recipes.id, parsed.data.recipeId),
+        or(eq(recipes.authorId, session!.user.id), ne(recipes.visibility, "private"))
+      ),
+    });
+    if (!recipe) return NextResponse.json({ error: "Recipe not found" }, { status: 404 });
+  }
+
   const plan = await getOrCreatePlan(session!.user.id, weekStart);
 
   // Remove existing entry for same day+mealType before inserting

apps/web/app/api/v1/meal-plans/[weekStart]/members/route.ts

@@ -103,16 +103,20 @@ export async function DELETE(req: NextRequest, { params }: Params) {
   const memberId = req.nextUrl.searchParams.get("memberId");
   if (!memberId) return NextResponse.json({ error: "memberId required" }, { status: 400 });
 
-  const plan = await db.query.mealPlans.findFirst({
-    where: and(eq(mealPlans.userId, session!.user.id), eq(mealPlans.weekStart, weekStart)),
-  });
-  if (!plan) return NextResponse.json({ error: "Not found" }, { status: 404 });
-
+  // Look up the member row first (not scoped to plans owned by the caller) —
+  // a member removing themselves isn't the plan owner, so scoping the plan
+  // lookup to `ownerId = session.user.id` would 404 before we ever reach the
+  // self-leave check below.
   const member = await db.query.mealPlanMembers.findFirst({
-    where: and(eq(mealPlanMembers.id, memberId), eq(mealPlanMembers.mealPlanId, plan.id)),
+    where: eq(mealPlanMembers.id, memberId),
   });
   if (!member) return NextResponse.json({ error: "Not found" }, { status: 404 });
 
+  const plan = await db.query.mealPlans.findFirst({
+    where: and(eq(mealPlans.id, member.mealPlanId), eq(mealPlans.weekStart, weekStart)),
+  });
+  if (!plan) return NextResponse.json({ error: "Not found" }, { status: 404 });
+
   const isOwner = plan.userId === session!.user.id;
   const isSelf = member.userId === session!.user.id;
   if (!isOwner && !isSelf) return NextResponse.json({ error: "Forbidden" }, { status: 403 });