A WebGPU retro game engine for TypeScript, inspired by RetroBlit. Build pixel-perfect 2D games with a clean, fantasy-console-style API.

feat(ci): add Tier 2 GPU performance benchmarks to workflow master

- Introduced a new `perf` job for Tier 2 GPU performance benchmarks in `ci.yml`: - Runs on `push` or PR events labeled with `perf-tier-2`. - Includes steps for running GPU performance tests, uploading results, and comparing to baselines. - Posts PR comments with performance comparisons and fails on regressions exceeding 50%. - Updated `compare-benchmarks.mjs` to `compare-tier-1-benchmarks.mjs` for naming consistency. - Added `scripts/compare-tier-2-perf-results.mjs` for Tier 2 performance result comparison. Co-Authored-By: Claude <model> <noreply@anthropic.com> Signed-off-by: Vaclav Vancura <commit@vancura.dev>