AI Features like Intellience, MCP disappear after rebuild with plugins

## Describe the bug

When I rebuild binary with plugins with this command:
```bash
./answer build --with github.com/apache/answer-plugins/connector-basic --with github.com/apache/answer-plugins/reviewer-baidu --with github.com/apache/answer-plugins/reviewer-basic --with github.com/apache/answer-plugins/storage-s3 --with github.com/apache/answer-plugins/storage-aliyunoss --with github.com/apache/answer-plugins/storage-tencentyuncos --with github.com/apache/answer-plugins/search-algolia --with github.com/apache/answer-plugins/quick-links --with github.com/apache/answer-plugins/render-markdown-codehighlight --with github.com/apache/answer-plugins/captcha-basic --with github.com/apache/answer-plugins/captcha-google-v2 --with github.com/apache/answer-plugins/connector-dingtalk --with github.com/apache/answer-plugins/notification-dingtalk --with github.com/mike-brown8/answer-connector-furtv/connector-vds
```
The AI Features disappear from the manage page.

## To Reproduce

Steps to reproduce the behavior:

1. Download v2.0.0 linux amd64 binary from the offical repo.
2. Install it and run it.
3. After init, you can see `Intellience` TAB in the manage page.
4. Stop it then run rebuild command *above*.
5. Run it again.
6. The `Intellience` TAB disappears and cannot also being called via `HOST/admin/mcp`.

## Expected behavior

The `Intellience` feature works well.

## Screenshots

## Platform

- Device: Simpcloud.cn VPS
- OS: Ubuntu 22 LTS
- Browser and version: New Edge on Windows
- Version: 2.0.0

Reproduce the issue using the listed ./answer build command and compare the manage page and HOST/admin/mcp before and after rebuilding the v2.0.0 Linux amd64 binary. Trace how the Intelligence feature is registered or loaded during startup; done means it remains visible in the manage page and callable through the MCP endpoint after the plugin rebuild.

Written by the indexing model from the issue text.