Clicking keyframes on Position, Rotation and Scale highlights those
properties, and Copy then added every key of a highlighted property that
had none selected, so deselected keys came back on paste. The keyframe
copy branch also left a stale value clipboard that Paste preferred over
the new keys.
Copy now takes whole animations only when no key is selected or the
Transform group is selected, and every copy branch clears the clipboards.
Also collapses a nested `if` in the STL importer into a match guard,
which Clippy 1.95 flags under -D warnings (no behaviour change).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Problem: After Effects 26 imports STL models besides glTF and OBJ; we
refused .stl files, and the Media Browser and import dialog did not list
them as models.
Fix: a pure-Rust STL reader in effectcraft-model (binary and ASCII,
detected from the contents; several ASCII solids and polygon loops;
VisCAM/SolidView and Materialise Magics facet colours as plain
materials; Z-up turned to the model's Y-up; faceted normals from the
winding). Truncated, empty or non-finite input is an error, never a
crash. .stl is now a model extension for import, probing, the Media
Browser, the import dialog and the system report.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
