### What problem does this PR solve?
During the chat, the assistant's response cited documents outside the
current knowledge base。
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Add `canvas_category` field for UserCanvas and CanvasTemplate.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Unify reference format of agent completion and OpenAI-compatible
completion API.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] Documentation Update
- [x] Refactoring
### What problem does this PR solve?
Revert broken agent completion by #9631.
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix Multiple conversations cause the reference list to grow indefinitely
due to Python's mutable default argument behavior.
Explicitly initialize reference as empty list when creating new sessions
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Resolve#9549 and #9436 , In v0.20.x,Agent completions API changed a
lot,such as without reference and so on
### Type of change
- [x] Refactoring
### What problem does this PR solve?
In 0.19.0 reference is list,and it should be a list,otherwise last
conversation's reference will be lost
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Conversation completion can specify different model
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
KB folder may not there while creating virtual file. #9423
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: Fixed the issue where some fields in the chat configuration could
not be displayed #3221
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Allows set multiple types of default models in service config.
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
https://github.com/infiniflow/ragflow/issues/9351
Support filter argument before invoking
### 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?
All models pass the mock response tests, which means that if a model can
return the correct response, everything should work as expected.
However, not all models have been fully tested in a real environment,
the real API_KEY. I suggest actively monitoring the refactored models
over the coming period to ensure they work correctly and fixing them
step by step, or waiting to merge until most have been tested in
practical environment.
### Type of change
- [x] Refactoring
### What problem does this PR solve?
Update broken agent completion due to v0.20.0 changes. #9199
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix:
```bash
'Langfuse' object has no attribute 'trace'
```
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
```bash
Traceback (most recent call last):
File "/home/infiniflow/workspace/ragflow/api/db/services/document_service.py", line 635, in update_progress
info["progress_msg"] = "%d tasks are ahead in the queue..."%get_queue_length(priority)
File "/home/infiniflow/workspace/ragflow/api/db/services/document_service.py", line 686, in get_queue_length
return int(group_info.get("lag", 0))
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'NoneType'
```
This issue can happen very rare. When a `stream` is first created, the
`lag` value may be nil, which can cause this issue. However, once any
message is synced, the `lag` will become `0` afterwards.
```bash
> XINFO GROUPS rag_flow_svr_queue
1) 1) "name"
2) "rag_flow_svr_task_broker"
3) "consumers"
4) (integer) 0
5) "pending"
6) (integer) 0
7) "last-delivered-id"
8) "1753952489937-0"
9) "entries-read"
10) (nil)
11) "lag"
12) (nil)
```
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
- Add Generator return type annotation for tts method
- Import typing.Generator for type hints
### Type of change
- [x] Refactoring
### 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?
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>
Fix the case where pages variable might be None
### What problem does this PR solve?
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
