Add building the artifact graph in sketch mode, take 2

[jtran]

Resolves #5166. Replaces #5093.

Thanks to #5068, we can build the majority of the artifact graph without the engine. I verified that the graph gets built without exiting sketch mode.

Note: Mock UUIDs don't match real UUIDs. From past conversations, we think this is desirable. But I'm not actually sure why it is different. Unlike #5093, I didn't make a new, separate IdGenerator.

I made a Rust-side test, but not a TS-side test. It isn't user-facing. Presumably, whatever user-facing feature that relies on this will get tested.

We remove skip_serializing_if because empty Vecs are getting used for the first time in this PR, and that's causing a TS runtime error. Aleph-Alpha/ts-rs#393 fixes the TS types to reflect that. We need to upgrade to ts-rs v11.0. Until then, just don't skip.

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Name	Status	Preview	Comments	Updated (UTC)
modeling-app	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 23, 2025 3:24pm

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #7557 will not alter performance

_{Comparing jtran/sketch-mode-artifact-graph-take2 (3df43c4) with main (5f2a10e)}

Summary

✅ 85 untouched benchmarks

[andrewvarga]

Great to see this!

I did check the issue mentioned here which is still occurring but I think that's because we still pass an outdated sketchDetails.sketchNodePaths to setupSketch as discussed here.
So probably that can be fixed by removing that and using the - now available - artifact graph in sketch mode.