Optimize version loading to use constant instead of function

Co-authored-by: hotlong <50353452+hotlong@users.noreply.github.com>

Author: Copilot

apps/docs/lib/homepage-i18n.ts

@@ -5,7 +5,7 @@
  * Supports: en (English), cn (Chinese/中文)
  */
 
-import { getSpecVersion } from './version';
+import { SPEC_VERSION } from './version';
 
 export interface HomepageTranslations {
   // Hero Section
@@ -88,7 +88,7 @@ export interface HomepageTranslations {
 export const en: HomepageTranslations = {
   badge: {
     status: 'Protocol Specification',
-    version: getSpecVersion(),
+    version: SPEC_VERSION,
   },
   hero: {
     title: {
@@ -159,7 +159,7 @@ export const en: HomepageTranslations = {
 export const cn: HomepageTranslations = {
   badge: {
     status: '协议规范',
-    version: getSpecVersion(),
+    version: SPEC_VERSION,
   },
   hero: {
     title: {

apps/docs/lib/version.ts

@@ -7,8 +7,7 @@
 import specPackage from '../../../packages/spec/package.json';
 
 /**
- * Get the current version of @objectstack/spec
+ * The current version of @objectstack/spec
+ * Computed once at module initialization
  */
-export function getSpecVersion(): string {
-  return `v${specPackage.version}`;
-}
+export const SPEC_VERSION = `v${specPackage.version}`;