feat: hizmet ve proje detay sayfaları + galeri sistemi

Yeni Appwrite kolonları:
- services: content (markdown), features[], faq[] (JSON-encoded), hero_image
- projects: gallery[], content (markdown), client_name, industry, duration, service_slug

Public sayfalar:
- /hizmetler/[slug]: hero + features checklist + markdown content + FAQ accordion
  + ilgili projeler (service_slug eşleşmesi)
- /projeler/[slug]: hero + meta tablosu (müşteri/sektör/süre/yıl) + kapak görseli
  + markdown vaka çalışması + lightbox galeri + diğer projeler

Yeni componentler:
- components/gallery.tsx: lightbox galeri (keyboard nav, prev/next, ESC kapat)
- components/faq-list.tsx: accordion FAQ (tek seferde tek açık)

Admin formları:
- Hizmet formu: hero_image, content (markdown), features (virgülle), FAQ
  (her blok '---' ile ayrılır, ilk satır soru, kalanı cevap)
- Proje formu: gallery (her satıra bir URL), content (markdown), client_name,
  industry, duration, service_slug (dropdown — hizmetlerden seçim)

Linkler:
- ServicesGrid kartları → /hizmetler/[slug]
- ProjectsGrid kartları → /projeler/[slug] (live_url butonu ayrı, target=_blank)

29 route üretiliyor.

lib/admin-actions.ts

@@ -129,6 +129,19 @@ export async function saveService(formData: FormData) {
   if (!description) throw new Error("Açıklama zorunlu");
   const slug = str(formData.get("slug")) || slugify(title);
 
+  // FAQ as JSON-encoded array. Each item: {"q":"...","a":"..."}
+  const faqRaw = String(formData.get("faq") ?? "");
+  const faq = faqRaw
+    .split("\n---\n")
+    .map((block) => {
+      const lines = block.trim().split("\n");
+      const q = lines[0]?.trim();
+      const a = lines.slice(1).join("\n").trim();
+      if (!q || !a) return null;
+      return JSON.stringify({ q, a });
+    })
+    .filter((x): x is string => x !== null);
+
   const data = {
     slug,
     title,
@@ -136,6 +149,10 @@ export async function saveService(formData: FormData) {
     icon: str(formData.get("icon")),
     order: num(formData.get("order")) ?? 0,
     featured: bool(formData.get("featured")),
+    content: str(formData.get("content")),
+    features: strArr(formData.get("features"))?.filter(Boolean) ?? null,
+    faq: faq.length > 0 ? faq : null,
+    hero_image: str(formData.get("hero_image")),
   };
   if (id) {
     await tablesDB.updateRow(DATABASE_ID, TABLES.services, id, data, secret);
@@ -172,6 +189,13 @@ export async function saveProject(formData: FormData) {
   const description = str(formData.get("description"));
   if (!description) throw new Error("Açıklama zorunlu");
 
+  // Gallery: one URL per line
+  const galleryRaw = String(formData.get("gallery") ?? "");
+  const gallery = galleryRaw
+    .split("\n")
+    .map((s) => s.trim())
+    .filter(Boolean);
+
   const data = {
     slug,
     title,
@@ -182,6 +206,12 @@ export async function saveProject(formData: FormData) {
     technologies: strArr(formData.get("technologies")),
     year: num(formData.get("year")),
     featured: bool(formData.get("featured")),
+    gallery: gallery.length > 0 ? gallery : null,
+    content: str(formData.get("content")),
+    client_name: str(formData.get("client_name")),
+    industry: str(formData.get("industry")),
+    duration: str(formData.get("duration")),
+    service_slug: str(formData.get("service_slug")),
   };
 
   if (id) {