feat: AI SEO generator, full admin panel, i18n sweep, new logo + auth/RTL fixes

AI SEO content generator
- content-svc: per-tenant OpenAI config (ai_settings) + /v1/ai endpoints
  (settings GET/PUT, seo-post) with SEO-expert prompt → structured article
- admin UI to configure token/base-url/model and generate + save as blog
- configurable base URL for restricted networks

Full data-driven admin panel
- generic /api/admin/resource proxy + reusable AdminResource component
- categories/tags/fonts/blogs (CRUD), users (list + ban), plans/slides
- AI content section; nav + i18n

i18n localization sweep
- localized 116 user-facing + studio/editor components to next-intl (fa+en)
  under the auto.* namespace; merge tooling in scripts/merge-i18n.js

Branding + assets
- Monoline F logo (LogoMark + favicon)
- offline SVG placeholder generator (/api/placeholder), dropped picsum.photos

Fixes
- JWT issuer mismatch on content/studio (flatrender → flatrender-identity)
- missing role claim → [Authorize(Roles="Admin")] now works (RBAC)
- Secure cookies broke HTTP sessions → gated behind AUTH_COOKIE_SECURE
- Radix RTL via DirectionProvider (right-aligned menus in fa)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/[locale]/admin/layout.tsx

@@ -1,4 +1,5 @@
 import { redirect } from "next/navigation";
+import { getTranslations } from "next-intl/server";
 
 import { getCurrentUser } from "@/lib/auth/session";
 
@@ -13,28 +14,38 @@ export default async function AdminLayout({
   if (!user || !user.is_admin) {
     redirect("/dashboard");
   }
+  const t = await getTranslations("auto.appAdminLayout");
+  const links: { href: string; label: string }[] = [
+    { href: "/admin/categories", label: t("categories") },
+    { href: "/admin/tags", label: t("tags") },
+    { href: "/admin/fonts", label: t("fonts") },
+    { href: "/admin/blogs", label: t("blogs") },
+    { href: "/admin/slides", label: t("slides") },
+    { href: "/admin/ai", label: t("aiContent") },
+    { href: "/admin/users", label: t("users") },
+    { href: "/admin/plans", label: t("plans") },
+    { href: "/admin/nodes", label: t("nodes") },
+    { href: "/admin/renders", label: t("renderQueue") },
+  ];
   return (
     <div className="min-h-screen bg-[#0c0e1a] text-gray-200">
       <nav className="border-b border-[#1e2235] bg-[#0f1120] px-6 py-3">
-        <div className="mx-auto flex max-w-7xl items-center gap-6">
-          <span className="text-sm font-semibold text-white">FlatRender Admin</span>
-          <a
-            href="/admin/nodes"
-            className="text-sm text-gray-400 hover:text-white transition-colors"
-          >
-            Nodes
-          </a>
-          <a
-            href="/admin/renders"
-            className="text-sm text-gray-400 hover:text-white transition-colors"
-          >
-            Render Queue
-          </a>
+        <div className="mx-auto flex max-w-7xl flex-wrap items-center gap-x-5 gap-y-2">
+          <span className="text-sm font-semibold text-white">{t("brand")}</span>
+          {links.map((l) => (
+            <a
+              key={l.href}
+              href={l.href}
+              className="text-sm text-gray-400 transition-colors hover:text-white"
+            >
+              {l.label}
+            </a>
+          ))}
           <a
             href="/dashboard"
-            className="ml-auto text-xs text-gray-500 hover:text-gray-300 transition-colors"
+            className="ml-auto text-xs text-gray-500 transition-colors hover:text-gray-300"
           >
-            ← Back to Dashboard
+            {t("backToDashboard")}
           </a>
         </div>
       </nav>