chore: bump version to 4.0.16 and clean up source maps in build output

- 版本号 4.0.15 → 4.0.16 (package.json + MACRO.VERSION)
- build.ts: 新增 Step 6，构建完成后清理 .map 文件（约 64MB）
  解决 npm mirror 80MB 包体积限制的同步失败问题

build.ts

@@ -136,3 +136,16 @@ chmodSync(cliBun, 0o755)
 chmodSync(cliNode, 0o755)
 
 console.log(`Generated ${cliBun} (shebang: bun) and ${cliNode} (shebang: node)`)
+
+// Step 6: Clean up source maps — they add ~64MB to the package, exceeding
+// npmmirror's 80MB size limit. Source maps are only useful for local
+// debugging, not for package consumers.
+const { unlinkSync } = await import('fs')
+let mapCount = 0
+for (const file of files) {
+  if (file.endsWith('.map')) {
+    unlinkSync(join(outdir, file))
+    mapCount++
+  }
+}
+console.log(`Cleaned ${mapCount} source map files from ${outdir}/ (saved ~64MB)`)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@costrict/csc",
-  "version": "4.0.15",
+  "version": "4.0.16",
   "description": "costrict",
   "type": "module",
   "author": "costrict",

scripts/defines.ts

@@ -14,7 +14,7 @@ export function getMacroDefines(): Record<string, string> {
         // ignore git errors
     }
     return {
-        "MACRO.VERSION": JSON.stringify("4.0.15"),
+        "MACRO.VERSION": JSON.stringify("4.0.16"),
         "MACRO.BUILD_TIME": JSON.stringify(new Date().toISOString()),
         "MACRO.COMMIT": JSON.stringify(commit),
         "MACRO.FEEDBACK_CHANNEL": JSON.stringify(""),