scena 1.7.2

A Rust-native scene-graph renderer with typed scene state, glTF assets, and explicit prepare/render lifecycles.
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# scena 1.7.2

Release date: 2026-06-27

## Fixes

- Rebuilt the easy-scene chrome showcase cards with the Studio HDR environment
  and higher sphere tessellation so reflective cards read as smooth studio
  chrome instead of faceted synthetic reflections.
- Removed the experimental `chrome_white_line` environment preset; remaining
  environment presets are file-backed and go through normal asset reservation.
- Added warning-level recipe validation for near-mirror sphere materials with
  insufficient tessellation, and raised authored recipe sphere defaults from
  `32x16` to `64x48`.
- Restored public recipe-render chrome-read verification coverage for missing
  bright/dark reflection structure.
- Hardened browser and platform CI proof for the public demo, WebGL2 software
  lanes, Windows DX12, macOS Metal, and WaterBottle reference artifacts.

## Validation

- Pull request CI for #6 passed before the version bump across Linux
  native/headless, browser WebGL2, browser WebGPU, wasm32 packaging, macOS
  Metal, Windows DX12, Headless 4K, and release-readiness report lanes.