### What problem does this PR solve?
This PR integrates SearXNG as a new search tool for Agents. It adds
corresponding form/config UI on the frontend and a new tool
implementation on the backend, enabling aggregated web searches via a
self-hosted SearXNG instance within chats/workflows. It also adds
multilingual copy to support internationalized presentation and
configuration guidance.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What’s Changed
- Frontend: new SearXNG tool configuration, forms, and command wiring
- Main changes under `web/src/pages/agent/`
- New components and form entries are connected to Agent tool selection
and workflow node configuration
- Backend: new tool implementation
- `agent/tools/searxng.py`: connects to a SearXNG instance and performs
search based on the provided instance URL and query parameters
- i18n updates
- Added/updated keys under `web/src/locales/`: `searXNG` and
`searXNGDescription`
- English reference in
[web/src/locales/en.ts](cci:7://file:///c:/Users/ruy_x/Work/CRSC/2025/Software_Development/2025.8/ragflow-pr/ragflow/web/src/locales/en.ts:0:0-0:0):
- `searXNG: 'SearXNG'`
- `searXNGDescription: 'A component that searches via your provided
SearXNG instance URL. Specify TopN and the instance URL.'`
- Other languages have `searXNG` and `searXNGDescription` added as well,
but accuracy is only guaranteed for English, Simplified Chinese, and
Traditional Chinese.
---------
Co-authored-by: xurui <xurui@crscd.com.cn>
### What problem does this PR solve?
Allow Retrieval kb_ids param use kb_id,and allow list kb_name or kb_id。
- Add judgment on whether the knowledge base name is a list and support
batch queries
-When the knowledge base name does not exist, try using the ID for
querying
-If both query methods fail, throw an exception
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Before executing the SQL, remove tags in the format [ID: number] to
avoid execution errors.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: wangyazhou <wangyazhou@sdibd.cn>
### What problem does this PR solve?
- The enum import was changed from Python's built-in StrEnum to the
strenum package.
- Fix error `Warning: Failed to import module code_exec: cannot import
name 'StrEnum' from 'enum' (/usr/lib/python3.10/enum.py)`
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
#9082#6365
<u> **WARNING: it's not compatible with the older version of `Agent`
module, which means that `Agent` from older versions can not work
anymore.**</u>
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
