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Found by sweeping the index-space defect class deliberately rather than by hitting it: that class produced 4 of the 8 defects found by hand yesterday, so it was worth auditing every combo in the panel that maps a row selection onto a document index. Most of it came back clean — the loft sidecar vectors are consistent at all four read sites, the sheet-body pickers go through the helper everywhere, mate connectors carry client data. Six did not. A stored target_body indexes the body list AS IT WAS just before that feature ran during replay, but Transform, Mirror, Thicken, Rib, Project and DeleteFace all populated their combo from the live m_doc.bodies. Boolean and Cut already replayed to the right slot. The failure is concrete: model a body, Thicken it, then Cut something later in the tree. A Cut replaces one body with two, so every index at or after it shifts. Reopen the Thicken and the combo lists the post-cut bodies while selecting the pre-cut index — showing, and on confirm re-targeting, a different body than the feature actually used. A Boolean that consumes its tool body shifts them the other way for the same result. fill_body_choice() does the truncated replay populate_body_choices() already did, for the single-combo tools. Six call sites, and 60 lines of duplicated population loops go with them. Visible change when testing: re-editing an early feature now lists FEWER bodies, because it lists only those that existed then. That is correct — you cannot target a body that did not exist yet — and it is what Boolean and Cut have always done. The new kernel test pins the invariant the GUI now leans on: a Cut turns one body into two, and replaying to just before it yields the earlier, shorter list. If body ordering after a split ever changes, that assumption fails loudly here instead of silently in a dialog. NOT click-tested — GUI wiring, compile-verified only. Filed as snaporca-oz7 and added to snaporca-cfi. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
OrcaSlicer tests
Building, running and writing tests is documented on the wiki, under How to Test.
Two files here rather than there, because coding agents only read what is in the repository: