Finding-U3 from doc/reviewer/usability-audit-2026-05-31.md.
Three concrete errors corrected:
1. check_gauss_bonnet() row (was: implies all map types work)
→ now: 'EuclideanMaps/SphericalMaps only' — HyperIdealMaps overload
is = delete (compile error since external-audit Finding-B fix)
2. enforce_gauss_bonnet() row (same issue)
→ same restriction note added
3. newton_hyper_ideal() preconditions (was: 'lambda0 initialised')
→ WRONG: HyperIdeal computes lengths from b_v, a_e via zeta functions
internally; lambda0 plays no role. Correct precondition:
'no lambda0 needed · no GB pre-check'
→ Added explanation: strictly convex energy (Springborn 2020 Thm 1.3)
→ Newton converges for any targets without a pre-check
Gauss-Bonnet prose section also updated:
- Examples now show EuclideanMaps/SphericalMaps explicitly
- HyperIdeal compile-error note added with the correct hyperbolic
identity Σ(2π-Θ_v) - Area = 2π·χ and why no pre-check is needed
- Open-mesh note added (GB identity does not hold for boundary meshes)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
README.md: reduced from 703 to ~75 lines — what/why, status, quick
start, minimal usage example, navigation table to doc/ files.
doc/architecture/overall_pipeline.md: trimmed — roadmap, extension
points, declarative pipeline YAML, and references sections removed
(each now has its own dedicated file). Replaced with a link table.
New files:
doc/getting-started.md — build modes, single-test invocation, CLI
doc/api/pipeline.md — full pipeline API with code for all 3 geometries
doc/api/extending.md — new functionals, geometry modes, Java porting guide
doc/api/contracts.md — processing unit preconditions/provides table
doc/api/cgal-package.md — Phase 8 CGAL package design + YAML pipeline (TODO)
doc/math/geometry-modes.md — Euclidean/Spherical/HyperIdeal comparison
doc/math/references.md — all papers by module
doc/roadmap/phases.md — Phases 1–10 with porting/research boundary
doc/roadmap/java-parity.md — Java vs C++ feature parity table
doc/contributing.md — language policy, test standards, release flow
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
