could the sandbox remember what i have?

[KotlinIsland]

Describe the Bug

if i go to https://pyrefly.org/sandbox/ then it's the always the default content. it would be nice if it remembered my changes automatically without me needing to check my brower history or copy a link or something

Sandbox Link

https://pyrefly.org/sandbox/

[yangdanny97]

Seems like a useful feature

This can probably be done using local storage on the browser

[AryanBagade]

would love to work on it @yangdanny97 !

[github-actions]

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[tejasreddyvepala]

fix landing!