Sketch on any plane

[jtran]

Part of #9271.

Before merging:

• Fix sketch on negative planes

The main change here is that sketch blocks now accept any Plane for their on parameter and ensure that it's sent to the engine.

Secondary changes:

• Plane was restructured so that it has an ObjectId if and only if it's been sent to the engine.
• To fix the types of the frontend sketch API, the sketch block on argument is now required by the parser to be a variable or other identifier, like a tag. The plan is that we can relax this restriction later. But in the short-term, it makes it simpler to implement partial execution Partial execution of sketch block only #9434 because it guarantees that the argument will always be in memory, which mock execution has access to on subsequent runs.

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Project	Deployment	Review	Updated (UTC)
modeling-app	Ready	Preview, Comment	Jan 5, 2026 8:04pm

[codspeed-hq]

CodSpeed Performance Report

Merging #9454 will not alter performance

_{Comparing jtran/sketch-on-any-plane (f19a415) with main (8260030)¹}

Summary

✅ 152 untouched
⏩ 92 skipped²

Footnotes

1. No successful run was found on main (2f5e683) during the generation of this report, so 8260030 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

2. 92 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩