fix: close TOCTOU race + missing checks in tier limits, add AI rate limits, patch CVEs (v0.60.0)

Security audit fixes (see SECURITY_AUDIT.md):
- lib/tiers.ts: checkAndIncrementTierLimit's recipe/storage branches did a
  live count/sum check with no lock tying it to the later write, so two
  concurrent requests near the cap could both pass and both write past the
  limit. Added checkTierLimitInTransaction — holds a per-user Postgres
  advisory lock for the duration of the caller's transaction, so the check
  and the write are atomic together. Applied to every recipe/storage write
  path (recipes create/update, fork, rate, avatar, and 7 AI recipe-creation
  routes).
- Adversarial re-verification of that fix caught a bigger gap in the same
  area: four AI routes (photo import, idea generation, batch-cook,
  translate-to-new-draft) had no recipe-limit check at all. Fixed.
- Added missing per-user rate limits to 5 AI endpoints (adapt, drinks,
  pairings, translate, variations) that had none, unlike their siblings.
- search page now checks for a session server-side, matching every other
  page under (app)/ — defense in depth; the underlying API was already
  public by design and proxy.ts already blocked unauthenticated requests.
- admin/settings route now uses the shared requireAdmin instead of a local
  duplicate.
- Documented two admin support-ticket endpoints missing from the OpenAPI
  spec; verified full route/OpenAPI parity otherwise.
- Bumped drizzle-orm to fix a SQL-identifier-escaping CVE, and overrode two
  transitive deps (esbuild, postcss) with known CVEs. pnpm audit is clean.

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

apps/web/app/api/v1/admin/settings/route.ts

@@ -1,7 +1,6 @@
 import { type NextRequest, NextResponse } from "next/server";
-import { headers } from "next/headers";
-import { auth } from "@/lib/auth/server";
-import { db, users, auditLogs, eq } from "@epicure/db";
+import { db, auditLogs } from "@epicure/db";
+import { requireAdmin } from "@/lib/api-auth";
 import { setSiteSetting, type SiteSettingKey } from "@/lib/site-settings";
 import { randomUUID } from "crypto";
 
@@ -28,31 +27,23 @@ const ALLOWED_KEYS: SiteSettingKey[] = [
   "GITEA_REPO",
 ];
 
-async function requireAdmin() {
-  const session = await auth.api.getSession({ headers: await headers() });
-  if (!session) return null;
-  const [dbUser] = await db.select({ role: users.role }).from(users).where(eq(users.id, session.user.id));
-  if (dbUser?.role !== "admin") return null;
-  return session;
-}
-
 export async function PUT(req: NextRequest) {
-  const session = await requireAdmin();
-  if (!session) return NextResponse.json({ error: "Forbidden" }, { status: 403 });
+  const { session, response } = await requireAdmin();
+  if (response) return response;
 
   const body = (await req.json()) as Record<string, string | null>;
 
   const changed: string[] = [];
   for (const [key, value] of Object.entries(body)) {
     if (!ALLOWED_KEYS.includes(key as SiteSettingKey)) continue;
-    await setSiteSetting(key as SiteSettingKey, value, session.user.id);
+    await setSiteSetting(key as SiteSettingKey, value, session!.user.id);
     changed.push(key);
   }
 
   if (changed.length > 0) {
     await db.insert(auditLogs).values({
       id: randomUUID(),
-      userId: session.user.id,
+      userId: session!.user.id,
       action: "admin.settings.update",
       targetType: "site_settings",
       metadata: JSON.stringify({ keys: changed }),