[Feature] Support for saving output parameters of the "Document Content Extraction" node as global variables

[TraceIvan]

MaxKB Version

v1.10.1-lts

Please describe your needs or suggestions for improvements

It is hoped that the output parameters of the "Document Content Extraction" node can be saved as global variables so that they can be referenced during multiple rounds of question-answering, avoiding the need for users to re-upload documents every time they ask questions. (If the history record is directly referenced, the context will be too long and there will be information redundancy)

Please describe the solution you suggest

No response

Additional Information

No response

[baixin513]

感谢反馈， 后续考虑一下

[shaohuzhang1]

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Thanks for the feedback, please consider it later