v3.3.0: File Manager, SSH/Remote access, Approval gate

- File Manager: browse device files, open/preview, install APKs
- SSH/Remote: [SSH_EXEC], [SSH_UPLOAD], [SSH_DOWNLOAD], [REMOTE_EXEC], [CURL_EXEC]
- Approval gate: all sensitive actions require user approval
- New FileManagerPlugin native plugin
- Updated agentic system prompt with external access docs
- Cleaned up stale .idsig artifacts from releases/

package.json

@@ -1,6 +1,6 @@
 {
   "name": "zai-chat",
-  "version": "3.2.0",
+  "version": "3.3.0",
   "description": "Z.AI Chat - Full stack AI chat powered by GLM Coding Plan",
   "main": "index.js",
   "scripts": {