limit() replaced each too-deep container by its children with
Vec::splice in the middle of the sibling list, moving every later
sibling each time: a wide list of such containers took quadratic time
to load. The list is now rebuilt in order from a worklist, so each node
moves a bounded number of times.
CodeRabbit findings #32, #38, #41, #44, #102:
- A frame (and a PDF export) draws symbol instances holding at most 16M objects together
(`vectorcraft_doc::MAX_SYMBOL_NODES`): nested instances multiplied past the depth limits.
- A dotted guide whose control polygon would make more than 100,000 dashes is drawn solid.
- Groups blending with their backdrop, drawn twice each, are drawn isolated past 4 nested.
- An image is decoded only while it and the images paints hold fit twice the decode allowance.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Dylan M. Taylor