refactor: 从 package.json 动态读取版本号，避免版本漂移

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

scripts/defines.ts

@@ -1,13 +1,23 @@
+import { readFileSync } from 'node:fs'
+import { resolve, dirname } from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const __dirname = dirname(fileURLToPath(import.meta.url))
+const pkgPath = resolve(__dirname, '..', 'package.json')
+const pkg = JSON.parse(readFileSync(pkgPath, 'utf-8'))
+
 /**
  * Shared MACRO define map used by both dev.ts (runtime -d flags)
  * and build.ts (Bun.build define option).
  *
  * Each value is a JSON-stringified expression that replaces the
  * corresponding MACRO.* identifier at transpile / bundle time.
+ *
+ * VERSION is read from package.json to avoid version drift.
  */
 export function getMacroDefines(): Record<string, string> {
   return {
-    'MACRO.VERSION': JSON.stringify('2.1.888'),
+    'MACRO.VERSION': JSON.stringify(pkg.version),
     'MACRO.BUILD_TIME': JSON.stringify(new Date().toISOString()),
     'MACRO.FEEDBACK_CHANNEL': JSON.stringify(''),
     'MACRO.ISSUES_EXPLAINER': JSON.stringify(''),