### What problem does this PR solve?

#4108

### Type of change

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

clone https://github.com/infiniflow/ragflow/pull/4023 
improve the information extraction, most llm return results in markdown
format ````sql ___ query `____ ```

### What problem does this PR solve?

#3993
### Type of change

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

some thing
-  execsql  add connection mssql
- fix bug duckduckgo-search rate limit
- update typo vi res

---------

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

### What problem does this PR solve?

#3993

### Type of change

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

### What problem does this PR solve?
#3978

### Type of change

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

### What problem does this PR solve?

#3909

### Type of change

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

### What problem does this PR solve?

#3909

### Type of change

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

### What problem does this PR solve?

Fix errors detected by Ruff

### Type of change

- [x] Refactoring

### What problem does this PR solve?

Refactor UI text

### Type of change

- [x] Documentation Update
- [x] Refactoring

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

### What problem does this PR solve?

Close #3805

### Type of change

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

### 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._
Added the function of sending emails through SMTP
Instructions for use-
Corresponding parameters need to be configured
Need to output upstream in a fixed format

![image](https://github.com/user-attachments/assets/93bc1af7-6d4f-4406-bd1d-bc042535dd82)


### Type of change


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

---------

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

### What problem does this PR solve?

#3646

### Type of change

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

### What problem does this PR solve?


### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

#3585
### Type of change

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

### What problem does this PR solve?

#3560

### Type of change

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

### What problem does this PR solve?

#3556 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

### Type of change

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

### What problem does this PR solve?

Fix set_output type hint

### Type of change

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

### What problem does this PR solve?

1. Remove unused code
2. Fix type mismatch, in nlp search and infinity search interface
3. Fix chunk list, get all chunks of this user.

### Type of change

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

---------

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

### What problem does this PR solve?

#3355 

### Type of change

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

### What problem does this PR solve?

Introduced [beartype](https://github.com/beartype/beartype) for runtime
type-checking.

### Type of change

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

### What problem does this PR solve?

1. Module init won't connect database any more.
2. Config in settings need to be used with settings.CONFIG_NAME

### Type of change

- [x] Refactoring

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

### 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?


### Type of change

- [x] Performance Improvement

### What problem does this PR solve?

Use consistent log file names, introduced initLogger

### 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?
#3373

### Type of change

- [x] Refactoring
- [x] Bug fix

### What problem does this PR solve?

#3361

### Type of change

- [x] Performance Improvement

Unified all log files into one.

### What problem does this PR solve?

Unified all log files into one.

### 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?

#3240

### Type of change

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

### What problem does this PR solve?

#3151

### Type of change

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

### What problem does this PR solve?


### Type of change

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

### What problem does this PR solve?

#3085

### Type of change

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

### What problem does this PR solve?

#2834 
### Type of change

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

### What problem does this PR solve?
#3056

### Type of change

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

### What problem does this PR solve?

#3052

### Type of change

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

### What problem does this PR solve?

#2921

### Type of change

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

### What problem does this PR solve?

#2908

### Type of change

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

### What problem does this PR solve?

Add agent component for  web crawler

### Type of change

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

### What problem does this PR solve?

#2834

### 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

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

### What problem does this PR solve?

#2700 

### Type of change

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

### What problem does this PR solve?

#2716

### Type of change

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

### 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?



### 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?

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

### Type of change

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