Add BackstopJS visual regression testing #1106
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Set up BackstopJS to capture and compare screenshots of all Protocol components across 7 breakpoints (360-1536px). This enables detecting visual regressions during CSS refactoring. - Add backstop.config.js with viewport definitions - Add backstop-scenarios.js with 94 component scenarios - Add npm scripts: visual:reference, visual:test, visual:approve, visual:open - Include baseline reference screenshots (658 images) - Update .gitignore to exclude test artifacts 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Ignore backstop_data generated files - Add backstop config files with camelcase rule disabled (BackstopJS requires snake_case properties) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Set up BackstopJS to capture and compare screenshots of all Protocol components across 7 breakpoints (360-1536px). This enables detecting visual regressions during CSS refactoring.
🤖 Generated with Claude Code
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