v0.1.6

Renderer performance release. Includes redundant identity alpha-mask elimination, improved renderer draw update paths, translated shape-shadow cache reuse, batched shape-only shadow miss rendering, and the Cranpose 0.1.6 workspace version bump. Validated by local cargo fmt/test/clippy, local Android/wasm/robot checks, and GitHub Actions run 26206120018.

What's Changed

• [codex] Improve renderer performance by @samoylenkodmitry in #274

Full Changelog: v0.1.5...v0.1.6