### What problem does this PR solve?

Fix: renrank_model and pdf_parser bugs | Update: session API
#2575
#2559
### Type of change

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

---------

Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>

### What problem does this PR solve?

#2295

### Type of change

- [x] Refactoring

### What problem does this PR solve?

### Type of change

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

### What problem does this PR solve?

#2295

### 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):

### What problem does this PR solve?

#2552

### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

SparkTTS

### Type of change

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

---------

Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>

### What problem does this PR solve?

#1588

### Type of change

- [x] Refactoring

### What problem does this PR solve?

#2516

### Type of change

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

### What problem does this PR solve?

#2492

### Type of change

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

### What problem does this PR solve?

#2487

### Type of change

- [x] Refactoring

https://github.com/infiniflow/ragflow/issues/2503


### 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

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

Before:

<img width="611" alt="image"
src="https://github.com/user-attachments/assets/02a3a1ee-7bfb-4fe0-9b15-11ced69cc8a3">

After:

<img width="796" alt="image"
src="https://github.com/user-attachments/assets/371136af-8d16-47aa-909b-26609d3ad60e">

<img width="557" alt="image"
src="https://github.com/user-attachments/assets/9268362f-2b6a-4ea1-9fe7-659f7292e5e1">

https://github.com/infiniflow/ragflow/issues/2496

### 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
- [ ] Performance Improvement
- [ ] Other (please describe):

### What problem does this PR solve?

### Type of change

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

### What problem does this PR solve?

OpenAITTS

### Type of change


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

---------

Co-authored-by: liuhua <10215101452@stu.ecun.edu.cn>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#2465

### Type of change

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

### What problem does this PR solve?

#2402

### Type of change

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

### What problem does this PR solve?

#2415

### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

#2415

### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

### Type of change

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

### What problem does this PR solve?
#2247

### Type of change

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

### What problem does this PR solve?
 #2247

### Type of change

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

### What problem does this PR solve?

#2335  fix SILICONFLOW embedding error

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?

### Type of change

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

### What problem does this PR solve?

add support for TongyiQwen tts
#1853

### Type of change


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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?


### Type of change

- [x] Performance Improvement
- [ ] Other (please describe):

### What problem does this PR solve?

issue: https://github.com/infiniflow/ragflow/issues/2277

_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)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

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

### What problem does this PR solve?

#2243

### Type of change

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

### What problem does this PR solve?

#2198  fix zhipuCV bug

### Type of change

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

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### 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?



### Type of change

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

### What problem does this PR solve?

fix tts interface error

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#1853 add support for Google Cloud

### Type of change


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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?


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

### What problem does this PR solve?

#2159  fix anthropic bug

### Type of change

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

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?

Fix some security vulnerabilities

### Type of change

- [x] Performance Improvement

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?

#1853  #2138 add support for Voyage AI

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#1853  add support for Anthropic

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?


### Type of change
- [x] Refactoring

### What problem does this PR solve?

### Type of change


- [x] Performance Improvement

### What problem does this PR solve?

add support for Tencent Cloud ASR

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

add support for TTS model
#1853

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>
Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#2043

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Most 'index failure' error is caused by ES.

### Type of change

- [x] Refactoring

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

1) Configuration interface update
2) Back-end adaptation API update
Note: The official no longer supports the Skylark1/2 series, and all
have been switched to the Doubao series


![image](https://github.com/user-attachments/assets/f6fd8782-0cdf-4c0b-ac8f-9eb130f667a5)

### 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

- [x] 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):

Co-authored-by: 海贼宅 <stu_xyx@163.com>

### What problem does this PR solve?
#1383

### Type of change

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

### What problem does this PR solve?

Bugfix: usage of Bedrock models require the system prompt (for models
that support it) to be provided in the API in a different way, at least
that was my experience with it just today. This PR fixes it.


https://docs.aws.amazon.com/bedrock/latest/userguide/conversation-inference.html

### Type of change

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

### What problem does this PR solve?

add support for Baidu yiyan

### Type of change

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

---------

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?

#2021 add support for markdown file in one parse way

### Type of change

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

Co-authored-by: Zhedong Cen <cenzhedong2@126.com>

### What problem does this PR solve?

#2028

### Type of change

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