Add Array[file] type for conversation variable.

[Copilotes]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

At present, in a conversation, as long as a document file is uploaded, subsequent conversations will directly report an error (probably due to the lack of contextual content of the file). Therefore, I want to set a context variable for the session and assign the uploaded file to it, so that subsequent sessions can also use this file. However, it seems that there is no corresponding type for sys. files in the current session variables. Can we add a corresponding type?

2. Additional context or comments

version 0.10.0 deploy by docker llm using local xinference.

3. Can you help us with this feature?

• [x] I am interested in contributing to this feature.

[dosubot[bot]]

Hi, @Copilotes. I'm Dosu, and I'm helping the Dify team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• You requested a new feature to support an Array[file] type for conversation variables.
• This feature aims to resolve errors when uploading document files during conversations.
• You expressed willingness to contribute to the development of this feature.
• No further comments or activity have been made on this issue.

Next Steps:

• Please let us know if this issue is still relevant to the latest version of the Dify repository by commenting here.
• If there is no further activity, this issue will be automatically closed in 15 days.

Thank you for your understanding and contribution!

[krmao]

anything update?