[RFC] Lower z-index of plasmo-shadow-container

[korsun]

How do you envision this feature/change to look/work like?

Default z-index of #plasmo-shadow-container is 2147483647 which is the highest value possible, which also means it's not overridable. Why not make it less. 50_000, or 100_000, or basically whatever will be quite safe.

What is the purpose of this change/feature? Why?

Honestly, I haven't tinkered around Plasmo: currently I'm dealing with a side integration into our system which uses it. We have a problem where their elements in Plasmo container are overriding everything on the page. I'm pretty sure z-index can be changed by developers and I will contact them — but my point is, nowadays, more and more people use vibe-coding without real understanding how things work in browser; having a safe default z-index will make everything better.

(OPTIONAL) Example implementations

No response

(OPTIONAL) Contribution

• I would like to contribute to this RFC via a PR

Verify canary release

• I verified that the issue exists in plasmo canary release

Code of Conduct

• I agree to follow this project's Code of Conduct
• I checked the current issues for duplicate problems.