chore: add tsgo type checker alongside tsc

[casamitjana]

Summary

• Add @typescript/native-preview dev dependency for faster type checking
• Add check-types script (tsgo --noEmit)
• Add check-types:tsc script (tsc --noEmit)
• lint script remains on tsc since tsgo is preview software

Measurements

Command	Time
npm run check-types (tsgo)	0.82s
npm run check-types:tsc (tsc)	1.61s

tsgo is ~49% faster on this codebase.

Test plan

• npm install succeeds
• npm run check-types passes
• npm run check-types:tsc passes
• Both produce equivalent results

Summary by CodeRabbit

• Chores
  • Added development dependencies for enhanced development tooling.
  • Added new development scripts for type validation.

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[coderabbitai]

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Walkthrough

Added two new npm scripts for TypeScript type checking (check-types and check-types:tsc) and introduced the @typescript/native-preview dependency to both dependencies and devDependencies in package.json.

Changes

Cohort / File(s)	Summary
Package Configuration package.json	Added scripts: "check-types": "tsgo --noEmit" and "check-types:tsc": "tsc --noEmit". Added @typescript/native-preview (^7.0.0-dev.20260122.3) to both dependencies and devDependencies.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description provides detailed context including summary, performance measurements, and test plan, but does not follow the required template structure with Changes section and Checklist items.	Reorganize the description to match the required template: add a 'Changes' section describing modifications, and complete the Checklist with release label and documentation/test verification items.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely summarizes the main change: adding tsgo type checker alongside tsc for faster type checking.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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