### What problem does this PR solve?
#9248

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Improve the logic so that it does not decode base 64 for the test image
each time

### Type of change

- [x] Refactoring
- [x] Performance Improvement

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

Advanced list dialogs

### Type of change

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

### What problem does this PR solve?

Update broken agent OpenAI-Compatible completion due to v0.20.0. #9199 

Usage example:

**Referring the input is important, otherwise, will result in empty
output.**

<img width="1273" height="711" alt="Image"
src="https://github.com/user-attachments/assets/30740be8-f4d6-400d-9fda-d2616f89063f"
/>

<img width="622" height="247" alt="Image"
src="https://github.com/user-attachments/assets/0a2ca57a-9600-4cec-9362-0cafd0ab3aee"
/>

### Type of change

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

### What problem does this PR solve?

#9232

### Type of change

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

1. When creating a new session, initialize an empty reference that
includes both the app api and sdk API.
2. Fix the logic when retrieving references for historical messages: the
number of dialogue messages and reference messages may differ, but it
should match the number of assistant messages.

Co-authored-by: Li Ye <liye@unittec.com>

### What problem does this PR solve?

Close #9197
Close #9145

### Type of change

- [x] Refactoring
- [x] Bug fixing.

### What problem does this PR solve?

list_document supports range filtering.

### Type of change

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

### What problem does this PR solve?

fix #8424 NPE in dify_retrieval.py, add log exception

### Type of change

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

### What problem does this PR solve?

The index name of the tag chunks is generated by the tenant id of the
knowledge base, so it should use the tenant id instead of the current
user id in the listing tags API.

### Type of change

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

### What problem does this PR solve?


### Type of change

- [x] Refactoring

### What problem does this PR solve?
Add industry-related search keyword generation function
- When generating search keywords, support for specific industries has
been added
- If the "industry" parameter is provided, industry-specific
restrictions will be added to the prompt
- This change can help users generate more precise search keywords
within specific industries

### Type of change

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

### 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)

### What problem does this PR solve?

#9050

### Type of change

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

### What problem does this PR solve?

doc_ids is a list , should use request.args.getlist("doc_ids")

### Type of change

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

### What problem does this PR solve?

Added infinity rank_feature support

### 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/8995

### Type of change

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

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/9034

### Type of change

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

### What problem does this PR solve?

OpenAI-compatible-API supports references.

### Type of change

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

### What problem does this PR solve?

Correct cancel logic error

### Type of change

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

### What problem does this PR solve?

Add edit button for local LLM models
<img width="1531" height="1428" alt="image"
src="https://github.com/user-attachments/assets/19d62255-59a6-4a7e-9772-8b8743101f78"
/>

<img width="1531" height="1428" alt="image"
src="https://github.com/user-attachments/assets/c3a0f77e-cc6b-4190-95a6-13835463428b"
/>



### Type of change

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

---------

Co-authored-by: Liu An <asiro@qq.com>

### What problem does this PR solve?

Close #8943

### Type of change

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

### What problem does this PR solve?

Add knowledge graph http api

### 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?


### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

Refine MCP dashboard create and list operations.

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Better uniform MIME content type.

### Type of change

- [x] Refactoring

### 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?

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?

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?

Add advanced document filter

### Type of change

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

### 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?

Fix typo process_duration.

### Type of change

- [x] Documentation Update
- [x] Refactoring

### What problem does this PR solve?

Secure canvas access.

### Type of change

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

### What problem does this PR solve?

Add MCP server test endpoint.

### Type of change

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

### What problem does this PR solve?

- Add comprehensive test suite for chunk operations including:
  - Test files for create, list, retrieve, update, and delete chunks
  - Authorization tests
  - Batch operations tests
- Update test configurations and common utilities
- Validate `important_kwd` and `question_kwd` fields are lists in
chunk_app.py
- Reorganize imports and clean up duplicate code

### Type of change

- [x] Add test cases

### What problem does this PR solve?

Add file management HTTP_API for operating files

### Type of change

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

### What problem does this PR solve?

Change mcp_client module to rag/utils/conn.

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Allow users to choose which MCP tools are enabled.

### Type of change

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

### What problem does this PR solve?

Remove useless logic in a loop for list_doc

### Type of change

- [x] Refactoring
- [x] Performance Improvement

### What problem does this PR solve?

stack：

```
2025-06-26 17:22:24,739 ERROR    1609 list index out of range
Traceback (most recent call last):
  File "/ragflow/.venv/lib/python3.10/site-packages/flask/app.py", line 880, in full_dispatch_request
    rv = self.dispatch_request()
  File "/ragflow/.venv/lib/python3.10/site-packages/flask/app.py", line 865, in dispatch_request
    return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
  File "/ragflow/api/utils/api_utils.py", line 298, in decorated_function
    return func(*args, **kwargs)
  File "/ragflow/api/apps/sdk/session.py", line 472, in list_session
    print(conv["reference"][message_num])
IndexError: list index out of range

```


![图片](https://github.com/user-attachments/assets/93fe90a8-0434-4842-ba9f-bb5a995b498a)


### Type of change

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

### What problem does this PR solve?

Fix chunk number error after re-parsing. #8503.

### Type of change

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

### What problem does this PR solve?

- Include optional `tag_feas` field if present in request
- Add input validation for `important_kwd` and `question_kwd` to ensure
they are lists
- #8462

### Type of change

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

### What problem does this PR solve?

Add MCP dashboard functionalities list_tools and test_tool.

### Type of change

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

### What problem does this PR solve?

Previous:
- Defaulted to hardcoded model 'BAAI/bge-large-zh-v1.5@BAAI'
- Did not respect user-configured default embedding_model

Now:
- Correctly prioritizes user-configured default embedding_model

Other:
- Make embedding_model optional in CreateDatasetReq with proper None
handling
- Add default embedding model fallback in dataset update when empty
- Enhance validation utils to handle None values and string
normalization
- Update SDK default embedding model to None to match API changes
- Adjust related test cases to reflect new validation rules

### Type of change

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

### What problem does this PR solve?

Add MCP server dashboard operations.

### Type of change

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

### What problem does this PR solve?

before refactor
1. create file record
2. Add to blob

if have some execption at 2 the system db will have a file record but
not have related blob, which will introduce some bug.

after refactor
1. add to blob
2. create file record.

if 1 success but 2 failed just have a dirty blob in blob system, user
will not feel that



### Type of change


- [x] Refactoring

### What problem does this PR solve?

This is a cherry-pick from #7781 as requested.

### Type of change

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

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

Fix code debug may corrupt by history answer.

### Type of change

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

### What problem does this PR solve?

- Correct boolean parsing for 'desc' parameter in document_app.py to
properly handle string values

### Type of change

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

### What problem does this PR solve?

Fixes a minor grammar issue in a user-facing error message. The original
message said "large than" instead of the correct comparative form
"larger than". Just a quick fix I noticed while reading the code.

### Type of change

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