Generate dynamic language mapping

[gandarez]

Summary

• Bump Chroma to latest version (v2.21.1).
• Changed language_gen.go to automatically generate test entries in language_test.go. The generator now:
  • Reads all Chroma lexers and generates:
    • stringToLanguage and languageToString maps (excluding "unknown"/LanguageUnknown)
    • chromaToLanguage and languageToChroma maps
  • Generates languageTests() entries: These are the primary string values for each Language constant (e.g., "Go" → LanguageGo). The entries respect priority overrides from the priority section in language.go.
  • Generates languageTestsAliases() entries: These are aliases that parse to Language constants but differ from the primary string. They include:
    • Chroma lexer names and aliases that differ from the primary Language string
    • Priority overrides (secondary strings that also map to the same Language)
    • chromaPriority entries
• Added new Language constants: C3, Kakoune, and RGBDS Assembly were new Chroma languages that needed to be added.
• Added chromaPriority entries: Protocol Buffer Text Format → LanguageProtocolBuffer, WebAssembly Text Format → LanguageWebAssembly
• Updated test skip list: Added entries to TestLanguage_StringChroma_AllLexersSupported for Chroma lexers that map to existing Language constants via chromaPriority (since StringChroma() returns the primary Chroma name, not the alias).

The generated test file now has:
802 languageTests entries (primary string values)
212 languageTestsAliases entries (aliases from Chroma and priority overrides)

[Copilot]

Pull request overview

This PR automates language mapping generation by reading all Chroma lexers dynamically and generating mappings, tests, and handling aliases. Key improvements include upgrading Chroma to v2.21.1 and adding support for new languages (C3, Kakoune, RGBDS Assembly).

• Replaces manual map creation in language_maps.go with automated generation from Chroma's lexer registry
• Generates comprehensive test coverage with 802 primary string tests and 212 alias tests
• Adds chromaPriority entries for Protocol Buffer Text Format and WebAssembly Text Format

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pkg/heartbeat/language_gen.go	Complete rewrite to generate mappings from Chroma lexers instead of parsing existing maps
pkg/heartbeat/language_generated.go	Generated file with all language mappings (stringToLanguage, chromaToLanguage, languageToString, languageToChroma)
pkg/heartbeat/language.go	Added new Language constants (C3, Kakoune, RGBDS Assembly) and chromaPriority documentation
pkg/heartbeat/language_test.go	Auto-generated test entries reorganized alphabetically with 802 tests and 212 alias tests
go.mod	Upgraded Chroma from v2.20.0 to v2.21.1

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[alanhamlett]

This is perfect!

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.17%. Comparing base (99223a8) to head (e7a3298).
⚠️ Report is 2 commits behind head on develop.

@@           Coverage Diff            @@
##           develop    #1256   +/-   ##
========================================
  Coverage    53.17%   53.17%           
========================================
  Files          394      394           
  Lines        11496    11496           
========================================
  Hits          6113     6113           
  Misses        4841     4841           
  Partials       542      542           

Flag	Coverage Δ
unittests	53.17% <ø> (ø)

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Files with missing lines	Coverage Δ
pkg/heartbeat/language.go	100.00% <ø> (ø)

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