feat(webgl): Add WebGL baseline before KiCad integration

Establish baseline screenshots for WebGL GAL implementation before
migrating it from test harness into KiCad's build system.

Current status: 7/27 scenarios passing (20 different from native):
- Alpha-blending: FIXED (blending now correct)
- Transform-API: EXCLUDED (dead code)
- Other scenarios: Work in progress

This baseline will be used by test-gal-webgl.sh to detect regressions
during the migration process. Goal is to preserve current rendering
fidelity while integrating WebGL GAL into KiCad source tree.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Viktor Vaczi 2026-01-09 15:14:12 +01:00
commit 5e74a001e7
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