Bump visioncortex to 0.9.3

Minor upstream bug fix. No traced-output change (golden tests unchanged);
full workspace suite passes.

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [Unreleased]
+
+### Changed
+
+* Bump `visioncortex` to 0.9.3 — a minor upstream bug fix.
+
 ## 1.0.0-alpha.3 - 2026-08-01
 
 ### Added

Cargo.toml

@@ -27,7 +27,7 @@ homepage = "http://www.visioncortex.org/vtracer"
 repository = "https://github.com/visioncortex/vtracer/"
 
 [workspace.dependencies]
-visioncortex = "0.9.2"
+visioncortex = "0.9.3"
 # Schneider curve fitting for the simplify pass. visioncortex pins an old
 # flo_curves internally for legacy reasons; we depend on the current one
 # directly and convert at the call boundary.