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/openapi.ts

@@ -104,7 +104,8 @@ export function generateOpenApiSpec(): object {
 
   const PaginatedRecipes = z.object({
     data: z.array(RecipeRef),
-    pagination: z.object({ page: z.number(), limit: z.number(), total: z.number(), pages: z.number() }),
+    limit: z.number(),
+    offset: z.number(),
   });
 
   const PaginatedCollections = z.object({
@@ -118,7 +119,7 @@ export function generateOpenApiSpec(): object {
 
   const idParam = z.object({ id: z.string() });
 
-  registry.registerPath({ method: "get", path: "/api/v1/recipes", summary: "List recipes", security, request: { query: z.object({ page: z.coerce.number().default(1), limit: z.coerce.number().default(20), visibility: z.enum(["private", "unlisted", "public"]).optional(), q: z.string().optional(), difficulty: z.enum(["easy", "medium", "hard"]).optional() }) }, responses: { 200: { description: "Paginated", content: { "application/json": { schema: PaginatedRecipes } } }, 401: { description: "Unauthorized", content: { "application/json": { schema: ApiErrorRef } } } } });
+  registry.registerPath({ method: "get", path: "/api/v1/recipes", summary: "List recipes", security, request: { query: z.object({ limit: z.coerce.number().default(20), offset: z.coerce.number().default(0), visibility: z.enum(["private", "unlisted", "public"]).optional() }) }, responses: { 200: { description: "Paginated", content: { "application/json": { schema: PaginatedRecipes } } }, 401: { description: "Unauthorized", content: { "application/json": { schema: ApiErrorRef } } } } });
   registry.registerPath({ method: "post", path: "/api/v1/recipes", summary: "Create recipe", security, request: { body: { content: { "application/json": { schema: CreateRecipeRef } }, required: true } }, responses: { 201: { description: "Created", content: { "application/json": { schema: RecipeRef } } }, 400: { description: "Bad request", content: { "application/json": { schema: ApiErrorRef } } }, 401: { description: "Unauthorized", content: { "application/json": { schema: ApiErrorRef } } } } });
   registry.registerPath({ method: "get", path: "/api/v1/recipes/{id}", summary: "Get recipe", security, request: { params: idParam }, responses: { 200: { description: "Recipe", content: { "application/json": { schema: RecipeRef } } }, 404: { description: "Not found", content: { "application/json": { schema: ApiErrorRef } } } } });
   registry.registerPath({ method: "put", path: "/api/v1/recipes/{id}", summary: "Update recipe", security, request: { params: idParam, body: { content: { "application/json": { schema: CreateRecipeRef } }, required: true } }, responses: { 200: { description: "Updated", content: { "application/json": { schema: RecipeRef } } }, 401: { description: "Unauthorized", content: { "application/json": { schema: ApiErrorRef } } }, 404: { description: "Not found", content: { "application/json": { schema: ApiErrorRef } } } } });