Dropping a clip on a non-mixamo rig (lady.glb is a Character Creator export,
CC_Base_* bones) threw inside a fire-and-forget event handler — the rejected
promise vanished and the drop appeared to do nothing at all. Timeline._fail
now logs + toasts via a shared window.sgToast that tlui installs; clipdrop
and direct handlers route through it.
Repro before: two clipdrops fired, only the mixamo one landed, no error.
After: 'clip: retarget: missing hips (mixamorig skeleton?)' toast.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
a785de41ae