Feature Request: (webui) Implement a experimental features on webui

[ngxson]

List for experimental functions:

• Allow edit assistant message
• Allow upload txt and code files (+ drag n drop)
• PDF parsing
• Model context protocol (discussed in another PR)
• Equivalent of "canvas" on claude / chatgpt
• On-browser python (Pyodide)
• Or even the whole linux emulator on-browser (WebVM), not sure if this is even usable

Feature Description

• Add a new "experimental functions" under settings menu
• Add an API for contributors to add their new functionalities without touching too many other parts
• Some packages will now be loaded from CDN to prevent too much bloat into the main bundle

Motivation

New functions like #11647 requires to add a big package and may not just half-working. One way that I can think of is to distribute it firstly as experimental function, gather feedback and when user really love it, we can decide to move it into the main bundle.

Possible Implementation

Probably need to firstly move to ReactJS, as VueJS code base now looks too messy.

[cometbaydo]

Model context protocol (discussed in another PR)

Could you link it to the other PR plz? Thanks!

[ChristophHaag]

Allow edit assistant message

I'm surprised that I don't see more people talking about this or requesting it.

To add some details to what people want to do: Maybe it's not so important for setups that generate dozens token/s and regeneration is cheap, but for everyone running large models and only getting few token/s, it's essential to:

• be able to interrupt generation as soon as it starts going in a bad direction
• correct a few words, and then
• continue generation with only having to (re)process the tokens starting from the last edit

koboldcpp has been supporting this for a long time, but sometimes using upstream llama.cpp works better.