Update semantic colors with intention system and quaternary colors

[erskingardner]

Summary

• Add new intention colors (info, success, warning, error) with background/content variants replacing borderInfo/borderSuccess/borderWarning
• Add backgroundContentQuaternary and fillQuaternary color properties with alpha transparency primitives
• Swap destructive color hierarchy (red600 is now primary, red500 is secondary)
• Add missing primitive colors (red50/950, green50/600/950, blue600, orange600)

Test plan

• All semantic colors tests pass (29 tests)
• All relay tile tests pass (12 tests)
• Flutter analyzer passes with no issues
• Pre-commit checks pass (formatting, linting, all tests)

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features
  • Added intention-based color system with support for info, success, warning, and error states, each with background and content color variants.
  • Introduced new fill color variants (quaternary) for enhanced design system flexibility.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[coderabbitai]

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Walkthrough

The PR extends the SemanticColors theme system with new alpha color variants, introduces intention-based color fields (info, success, warning, error with background and content pairs), and removes deprecated border color placeholders. It updates dependent code and tests accordingly.

Changes

Cohort / File(s)	Summary
Core semantic colors lib/theme/semantic_colors.dart	Added 13 new public color fields (backgroundContentQuaternary, fillQuaternary variants, 8 intention colors). Removed 3 deprecated border fields. Introduced _BlackAlphaColors and _WhiteAlphaColors token groups with opacity variants. Updated Light/Dark theme initializers, copyWith, and lerp methods to handle new fields.
Widget and test updates lib/widgets/wn_relay_tile.dart, test/widgets/wn_relay_tile_test.dart	Updated status indicator color from borderSuccess to intentionSuccessContent in widget and corresponding test expectations.
Theme test coverage test/theme/semantic_colors_test.dart	Extended copyWith and lerp test cases to validate all 8 new intention color fields, replacing expectations for removed border fields.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• Add semantic color system with ThemeExtension #55: Directly related change to SemanticColors with theme modifications and widget color token updates.

Suggested reviewers

• josefinalliende
• untreu2

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately and concisely summarizes the main changes: introduction of an intention color system (info, success, warning, error) and quaternary color properties, which are the primary modifications across the semantic colors file and related code.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[github-actions]

✅ Coverage: 99.62% → 99.63% (+0.01%)

[coderabbitai]

Actionable comments posted: 1

🤖 Fix all issues with AI agents

In `@test/theme/semantic_colors_test.dart`:
- Around line 265-285: Tests for SemanticColors.copyWith and SemanticColors.lerp
are missing assertions for the newly added quaternary intention tokens; update
the tests that reference SemanticColors.light.copyWith and the
SemanticColors.lerp tests to include assertions for the quaternary fields (e.g.
intentionInfoQuaternaryBackground, intentionInfoQuaternaryContent,
intentionSuccessQuaternaryBackground, intentionSuccessQuaternaryContent,
intentionWarningQuaternaryBackground, intentionWarningQuaternaryContent,
intentionErrorQuaternaryBackground, intentionErrorQuaternaryContent) so the
copyWith returns the new values and lerp interpolates them as expected.

[github-actions]

✅ Coverage: 99.62% → 99.63% (+0.01%)

[github-actions]

✅ Coverage: 99.62% → 99.63% (+0.01%)

[josefinalliende]

✅ LGTM!