Were only exposing target_faces/preserve_sharp/preserve_boundary. Added the
remaining pyquadriflow params: adaptive_scale (curvature-adaptive quad sizing),
minimum_cost_flow (cleaner connectivity/singularities), aggressive_sat (seamless
fully-integer, highest quality), and seed. Wired through the backend + dispatcher.
Also documented that preserve_sharp's threshold is hardcoded at 60 deg in
QuadriFlow's C++ (ComputeSharpEdges: edge sharp when adjacent face normals
deviate > 60 deg) -- not adjustable without rebuilding the binding/core.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
