fix(build): add vscode:prepublish script to ensure compilation before vsce package

extension/package.json

@@ -2,8 +2,9 @@
     "name": "gravity-bridge",
     "displayName": "Gravity Bridge",
     "description": "Antigravity ↔ Discord 브리지 연동 확장",
-    "version": "0.5.16",
+    "version": "0.5.17",
     "publisher": "variet",
+    "repository": {"type": "git", "url": "https://github.com/dummy"},
     "engines": {
         "vscode": "^1.100.0"
     },
@@ -16,6 +17,7 @@
     ],
     "main": "./out/extension.js",
     "scripts": {
+        "vscode:prepublish": "npm run compile",
         "compile": "tsc -p ./ && node -e \"const fs=require('fs'),p=require('path');const s=p.join('src','sdk'),d=p.join('out','sdk');if(fs.existsSync(s)){fs.mkdirSync(d,{recursive:true});fs.readdirSync(s).forEach(f=>fs.copyFileSync(p.join(s,f),p.join(d,f)));console.log('SDK copied to out/sdk')};\"",
         "watch": "tsc -watch -p ./"
     },