Add patterns to the artifact graph

[franknoirot]

Closes #10039 by adding artifact graph processing for patterned items, and closes #10030 by adding them to the bodies pane logic, and allowing them to have their visibility toggled from there. Codex written.

Demo

Screenshare.-.2026-05-04.4_19_42.PM-compressed.mp4

[vercel]

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Project	Deployment	Actions	Updated (UTC)
modeling-app	Ready	Preview, Comment	May 4, 2026 11:55pm

[codspeed-hq]

Merging this PR will not alter performance

✅ 116 untouched benchmarks
⏩ 151 skipped benchmarks¹

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_{Comparing franknoirot/10039/patterns-artifact-graph (55c0311) with main (5e8fee1)²}

Footnotes

1. 151 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. ↩

2. No successful run was found on main (4004c62) during the generation of this report, so 5e8fee1 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[jtran]

The Rust changes look good to me.