fix: Add type definitions inline, remove circular import

- Add SiteConfig, NavItem, ProductCategory, WorkHours interfaces
- Remove: import { ... } from './site-config' (circular import)
- Types now defined at top of file

Fixes TypeScript build error on Easypanel.

dealplustech-astro/src/data/site-config.ts

@@ -1,4 +1,52 @@
-import { SiteConfig, NavItem, ProductCategory, WorkHours } from './site-config';
+// Deal Plus Tech - Site Configuration
+// Types defined inline to avoid circular imports
+
+export interface SiteConfig {
+  name: string;
+  nameTh: string;
+  url: string;
+  description: string;
+  phone: string;
+  email: string;
+  lineId: string;
+  facebookUrl: string;
+  address: string;
+}
+
+export interface NavItem {
+  label: string;
+  labelEn: string;
+  href: string;
+  children?: Array<{ label: string; labelEn: string; href: string; children?: Array<{ label: string; labelEn: string; href: string }> }>;
+}
+
+export interface ProductCategory {
+  id: string;
+  name: string;
+  nameEn: string;
+  slug: string;
+  href: string;
+  image: string;
+  description: string;
+  shortDescription?: string;
+  keywords?: string[];
+  seoContent?: string;
+  specifications?: Array<{ label: string; value: string; unit?: string }>;
+  features?: string[];
+  applications?: string[];
+  certifications?: string[];
+  faq?: Array<{ question: string; answer: string }>;
+  schemaData?: any;
+  relatedProductIds?: string[];
+  productTables?: Array<{ tableName: string; headers: string[]; rows: string[][] }>;
+}
+
+export interface WorkHours {
+  day: string;
+  hours: string;
+  isClosed?: boolean;
+}
+
 
 export const siteConfig: SiteConfig = {
   name: 'Deal Plus Tech',