### What problem does this PR solve?

Support extracting questions and answers from PDF files

### Type of change

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

### What problem does this PR solve?

#433 

### Type of change

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

### What problem does this PR solve?

#918 
### Type of change

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

### What problem does this PR solve?

fix file preview in file management

### Type of change

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

### What problem does this PR solve?
feat: duplicate node #918


### Type of change


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

### What problem does this PR solve?
feat: add delete menu to graph node #918

### Type of change

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

### 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?

feat: when a node of the graph is selected, the border of the node is
highlighted. #918

### Type of change


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

### What problem does this PR solve?


### Type of change

- [x] Refactoring

### 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] Documentation Update

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

### What problem does this PR solve?

feat: set the anchor points of all nodes to be enterable and exitable
#918

### Type of change


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

### 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] Documentation Update

### What problem does this PR solve?

feat: add icon to graph nodes #918

### Type of change


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

### What problem does this PR solve?

feat: catch errors when sending messages #918

### Type of change

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

### What problem does this PR solve?

#720 

### Type of change

- [x] Documentation Update

### What problem does this PR solve?

feat: generate uuid with human-id #918

### Type of change


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

### What problem does this PR solve?

This PR have finished 'create dataset' of both HTTP API and Python SDK.
HTTP API:
```
curl --request POST --url http://<HOST_ADDRESS>/api/v1/dataset   --header 'Content-Type: application/json' --header 'Authorization: <ACCESS_KEY>' --data-binary '{
  "name": "<DATASET_NAME>"
}'
```

Python SDK:
```
from ragflow.ragflow import RAGFLow
ragflow = RAGFLow('<ACCESS_KEY>', 'http://127.0.0.1:9380')
ragflow.create_dataset("dataset1")

```

TODO: 
- ACCESS_KEY is the login_token when user login RAGFlow, currently.
RAGFlow should have the function that user can add/delete access_key.

### Type of change

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

---------

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

### What problem does this PR solve?

fix: hide web crawl menu item #1107

### Type of change

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

### What problem does this PR solve?

Knowledge base management supports crawling information from web pages
and generating PDF documents

### Type of change
- [x] New Feature (Support document from web pages)

### What problem does this PR solve?

I implemented infinity, a fast vector embeddings engine. 

### Type of change


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

### What problem does this PR solve?

Redis post config is missing

### Type of change

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

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

### What problem does this PR solve?

Update README for build from source.

### Type of change

- [x] Documentation Update

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

### What problem does this PR solve?
feat: add OperateDropdown
feat: send debug message #918 

### 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?

_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] Documentation Update

### What problem does this PR solve?

as title

### Type of change

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

### What problem does this PR solve?

feat: watch graph change #918 

### Type of change

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

### 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] Documentation Update

### What problem does this PR solve?

#1075 

### Type of change

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

### What problem does this PR solve?

#720 

### Type of change

- [x] Documentation Update

### What problem does this PR solve?

bix fix

### Type of change

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

### What problem does this PR solve?

feat: add FlowChatBox #918 

### Type of change

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

### What problem does this PR solve?

#1069 
### Type of change

- [x] Documentation Update

…1074

### What problem does this PR solve?

The interface supported by Traditional Chinese is not complete #1074

### Type of change

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

### What problem does this PR solve?

feat: modify the chinese translation of self-rag #1069

### Type of change

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

### What problem does this PR solve?

feat: support Self-RAG #1069
### Type of change

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

### What problem does this PR solve?

feat: run flow #918 

### Type of change


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

### What problem does this PR solve?


### Type of change


- [x] Refactoring

### What problem does this PR solve?

Using password authentication to access ElasticSearch is essential,
especially in a production environment.

This PR will enable password access support.

### Type of change

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

### What problem does this PR solve?

#1069 

### Type of change

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

### What problem does this PR solve?
feat: fetch flow #918 
feat: save graph

### Type of change


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

### What problem does this PR solve?

#992 

### Type of change

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

### What problem does this PR solve?
feat: add custom edge
feat: add flow card
feat: add store for canvas
#918 

### Type of change

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

### 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?

delete SDK repo and edit readme

### Type of change

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

### What problem does this PR solve?

fix: change the address of the ollama document #1042

### Type of change

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

### What problem does this PR solve?

Added delete_dataset method and test for it.

### Type of change

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

### What problem does this PR solve?

Add create_dataset method, test for it, and update SDK->sdk.

### Type of change

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

Signed-off-by: cecilia-uu <konghui1996@163.com>