✨ Independent stash per space

Feature Request Summary

I hope I'm not repeating any existing feature requests here (I've looked around using "stash" as keyword). I think the stash feature should be handled independently in each space.

Problem / Opportunity & Desired Solution

Current behavior:

• Space 01 has Chrome stashed to right side
• Move to Space 02, set Edge to be stashed to the right side
• Move back to Space 01, now Chrome is out of its stashed position and will not be stashed anymore

Desired behavior:

• Space 01 has Chrome stashed to right side
• Move to Space 02, set Edge to be stashed to the right side
• Move back to Space 01, Chrome should be still stashed and can be interacted as normally. So does Edge when user is move to Space 02

Alternatives Considered

No response

Visuals or References

No response

Additional Context

This request probably can be extended if there is multiple display being connected. But, I can't have any say to that because currently not in a multi-display setup

Priority

Medium (important but not blocking)

Final Checks

• My issue is written in English.
• My issue title is descriptive.
• This is a single feature request (multiple feature requests should be reported individually).
• I have looked to see if this is a duplicate of another feature request.
• I can help with research or testing.
• I can help code this feature.

No files, tests, or entry points are named. Start by tracing how stash state is stored and updated when switching spaces, then determine where space identity is available to that state. Done means Chrome remains stashed in Space 01 and Edge remains independently stashed in Space 02 after moving between spaces.