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/lib/tiers.ts

@@ -31,14 +31,15 @@ export class TierLimitError extends Error {
 export async function checkAndIncrementTierLimit(
   userId: string,
   userTier: "free" | "pro",
-  key: "recipe" | "aiCall"
+  key: "recipe" | "aiCall" | "storage",
+  amount = 1
 ): Promise<void> {
   const [tierDef] = await db
     .select()
     .from(tierDefinitions)
     .where(eq(tierDefinitions.tier, userTier));
 
-  if (!tierDef) return;
+  if (!tierDef) throw new TierLimitError(key, userTier);
 
   const month = currentMonth();
   const id = `${userId}-${month}`;
@@ -57,7 +58,7 @@ export async function checkAndIncrementTierLimit(
     if (result.length === 0) {
       throw new TierLimitError("aiCall", userTier);
     }
-  } else {
+  } else if (key === "recipe") {
     const limit = tierDef.maxRecipes;
     const cap = limit === UNLIMITED ? sql`true` : sql`user_usage.recipe_count < ${limit}`;
     const result = await db.execute(sql`
@@ -71,6 +72,20 @@ export async function checkAndIncrementTierLimit(
     if (result.length === 0) {
       throw new TierLimitError("recipe", userTier);
     }
+  } else {
+    const limit = tierDef.storageMb;
+    const cap = limit === UNLIMITED ? sql`true` : sql`user_usage.storage_used_mb + ${amount} <= ${limit}`;
+    const result = await db.execute(sql`
+      INSERT INTO user_usage (id, user_id, month, ai_calls_used, recipe_count, storage_used_mb)
+      VALUES (${id}, ${userId}, ${month}, 0, 0, ${amount})
+      ON CONFLICT (user_id, month) DO UPDATE
+        SET storage_used_mb = user_usage.storage_used_mb + ${amount}
+        WHERE ${cap}
+      RETURNING storage_used_mb
+    `);
+    if (result.length === 0) {
+      throw new TierLimitError("storage", userTier);
+    }
   }
 }