### What problem does this PR solve?

Fix context loss caused by separating markdown tables from original
text. #6871, #8804.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?
This change adds 'Vietnamese' to the list of supported languages in two
components related to cross-language functionality. The addition expands
language support by including Vietnamese as a selectable option

### Type of change
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Fixes no chunks parsed out for Law. #5113 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Feat: Adjust agent mcp style #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Feat: Synchronize MCP data to agent #3221
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?


### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

https://github.com/infiniflow/ragflow/issues/8782

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?
Feat: Render the mcp list on the agent page #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Refine MCP dashboard create and list operations.

### Type of change

- [x] Refactoring

### What problem does this PR solve?

FlagModel internal support returns as numpy

### Type of change
- [x] Performance Improvement

### What problem does this PR solve?

Feat: Filter MCP server list by text. #3221
### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### AgentCreateBUGFix
Because useFetchFlowTemplates is called both in the hooks and the
AgentTemplateModal, and the ID of the empty template is generated via
uuid, there may be cases where the IDs do not match.

Report a BUG as follows:
Prompt: 101
Required argument is missing: dsl;

<img width="472" height="121" alt="52d79682-4e50-4863-8486-f1e154003043"
src="https://github.com/user-attachments/assets/c5d217c9-b6cc-4ef2-866b-694c8b9ab3ae"
/>

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

Co-authored-by: 海贼宅 <stu_xyx@163.com>

### What problem does this PR solve?

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [ ] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [x] Refactoring
- [x] Performance Improvement
- [ ] Other (please describe):

Signed-off-by: zhanluxianshen <zhanluxianshen@163.com>

### What problem does this PR solve?

Add document viewers for text and markdown files

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Better uniform MIME content type.

### Type of change

- [x] Refactoring

### What problem does this PR solve?


https://github.com/infiniflow/ragflow/issues/8719#issuecomment-3055883271

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

### Type of change

- [x] Documentation Update

### What problem does this PR solve?

Feat: Import and export MCP Server #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/8791


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

fix dataset-page's bugs,Input component supports icon, added Radio
component, and removed antd from chunk-result-bar page [#3221
](https://github.com/infiniflow/ragflow/issues/3221)

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

https://github.com/infiniflow/ragflow/issues/8763#issuecomment-3055317110

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?
 
Change document status in bulk.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Add xAI provider (experimental feature, requires user feedback).

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Feat: Edit MCP server #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Feat: Modify the agent tool name #3221
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Fixes a function name typo for the `/list` route in
`api/apps/conversation_app.py`.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

### Type of change

- [x] Refactoring
- [x] Performance Improvement

### What problem does this PR solve?

Feat: Delete MCP server #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Feat: Avoid the form sheet covering the chat sheet #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

The rm function in chunk_app.py now takes the index name differently
than other functions, so there will be situations where users can create
and update a chunk but not delete it.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Based on https://github.com/infiniflow/ragflow/issues/8740 
1. A better handle for 'NoneType' object is not subscriptable
2. Add some logs to get the internal message

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Changed the default value of `chunk_token_num` from 128 to 512 in both
HTTP and Python API reference documentation to reflect the updated
configuration.

#8753

### Type of change

- [x] Documentation Update

### What problem does this PR solve?

Updated the default `chunk_token_num` value in `api_utils.py` and
`validation_utils.py` to 512 to accommodate larger text chunks. Adjusted
corresponding test cases in HTTP and SDK API tests to reflect this
change.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Feat: Test MCP server #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?


### Type of change

- [x] Documentation Update

### What problem does this PR solve?

When knowledgebase/dataset created by API, graphrag and raptor can be
null, and will trigger NoneType error when reach to this code, causing
chunking task not able to finish.

![image](https://github.com/user-attachments/assets/998a63e9-611b-4301-8808-24839a05be8a)

Proposed solution will result in None and pass the condition check
without error.

![image](https://github.com/user-attachments/assets/184374fb-e06a-46e6-b8ac-d66a3fd93b59)


### Type of change

-  ✅ Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/8733

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Feat: Display MCP multiple selection bar #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Add advanced document filter

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Feat: List MCP servers #3221
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

https://github.com/infiniflow/ragflow/issues/8719

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?


### Type of change

- [x] Documentation Update

### What problem does this PR solve?

- Validate dialog name in `dialog_app.py` to ensure it is a non-empty
string and does not exceed 255 bytes in UTF-8 encoding.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Change the data in the dataset page to be obtained using the interface,
and change the import to obtain all data every 15 seconds to obtain the
data of the current page every 5 seconds when parsing the existing file.
[#3221](https://github.com/infiniflow/ragflow/issues/3221)

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

Feat: Add note node #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

This commit introduces a comprehensive test suite for the dialog app,
including tests for creating, updating, retrieving, listing, and
deleting dialogs. Additionally, the common.py file has been updated to
include necessary API endpoints and helper functions for dialog
operations.

### Type of change

- [x] Add test cases

### What problem does this PR solve?

1. Remove the useless pop logic due to already been checked at the if
logic
2. merge log logic

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Added support for preview of txt, md, excel, csv, ppt, image, doc and
other files [#3221](https://github.com/infiniflow/ragflow/issues/3221)

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?
Feat: Get the running log of each message through the trace interface
#3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

'handleOk' was used before it was
defined.eslint@typescript-eslint/no-use-before-define

### What problem does this PR solve?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)