fix: add --version to adapter CLIs, read VERSION from package.json

- All uwf-* adapter CLIs now support --version / -V
- util VERSION constant reads from package.json at runtime
- agent-hermes ACP clientInfo uses dynamic VERSION

小橘 🍊（NEKO Team）

packages/agent-builtin/src/cli.ts

@@ -1,5 +1,12 @@
 #!/usr/bin/env node
 
+// eslint-disable-next-line -- dynamic import for version
+const pkg = await import("../package.json", { with: { type: "json" } });
+if (process.argv.includes("--version") || process.argv.includes("-V")) {
+  process.stdout.write(`${pkg.default.version}\n`);
+  process.exit(0);
+}
+
 import { createBuiltinAgent } from "./agent.js";
 
 const main = createBuiltinAgent();