Add Linguist colours + langmapper

[skyfallwastaken]

No description provided.

[greptile-apps]

Greptile Summary

Integrated GitHub Linguist color scheme for programming languages across the application. The PR introduces a new LanguageUtils module that centralizes language name normalization and color lookups using GitHub's official languages.yml file (9,277 lines).

Key changes:

• Centralized language display name logic (previously scattered across helpers and services)
• Added consistent color coding for languages using Linguist's color palette
• Updated dashboard, profile views, and API responses to include language colors
• Refactored duplicate display_language_name logic from multiple locations into a single utility

Technical implementation:

• LanguageUtils provides alias resolution (e.g., "js" → "JavaScript", "py" → "Python")
• Colors are applied to pie charts, horizontal bars, and API summaries
• Backend passes language_colors map to frontend for consistent rendering
• Falls back to #888888 for unknown languages

The implementation is clean and follows Rails conventions. However, tests are missing for the new LanguageUtils module.

Confidence Score: 4/5

• Safe to merge with minor test coverage concern
• The implementation is solid and well-structured, but lacks tests for the new LanguageUtils module. The repository owner requires tests for new functionality. Otherwise, the changes are straightforward refactoring with no breaking changes.
• No files require special attention, but app/lib/language_utils.rb should have test coverage added

Important Files Changed

Filename	Overview
app/lib/language_utils.rb	New utility module for language name normalization and color lookup using GitHub Linguist data
config/languages.yml	GitHub Linguist language definitions file (9277 lines) with color and alias mappings
app/helpers/application_helper.rb	Refactored to use LanguageUtils for language name display and color lookup
lib/wakatime_service.rb	Refactored to use LanguageUtils, adds color field to language summary chunks

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[greptile-apps]

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