refactor: reduce approval context overhead

scripts/build-release.mjs

@@ -39,6 +39,7 @@ mkdirSync(join(clientStaging, "dist", "src"), { recursive: true });
 for (const name of ["bridge.js", "entrypoint.js", "client-installer.js", "approval-contract.js"]) {
   cpSync(resolve("dist", "src", name), join(clientStaging, "dist", "src", name));
 }
+cpSync(resolve("skills/dingtalk-approval"), join(clientStaging, "skill", "dingtalk-approval"), { recursive: true });
 const clientPackage = {
   name: "dingtalk-approval-client",
   version,
@@ -48,7 +49,7 @@ const clientPackage = {
     "dingtalk-approval": "dist/src/client-installer.js",
     "dingtalk-approval-bridge": "dist/src/bridge.js",
   },
-  files: ["dist/src"],
+  files: ["dist/src", "skill/dingtalk-approval"],
   engines: { node: ">=22.13" },
   dependencies: {
     "@modelcontextprotocol/sdk": lockedVersion("@modelcontextprotocol/sdk"),