release-1.0.0
Bump version to 1.0.0 The codebase has matched the v1 scope from docs/PLAN.md since 2026-05-04 (all eight phases shipped, ≤ 1 ULP transcendentals, full SMIL backlog closed) and now also covers the post-v1 review's IEEE 754 §5.3 / §5.10 quantum gap (commit 67964c8). Stamping 1.0.0 makes that feature-completeness explicit. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>