Simplify version management by reading from package.json

[senechko]

Summary

• Replace the hardcoded version string in lib/version.ts with import packageJson from '../package.json', so the version is always derived from package.json at runtime
• Delete update-version.js (npm version hook) and check-version.ts (pre-commit guard) — both are no longer needed
• Remove the "version" script from package.json and the check-version.ts pre-commit hook

This works because npm always includes package.json in published tarballs regardless of the "files" field, so dist/lib/version.js's require("../package.json") resolves correctly in consumers' node_modules.

Test plan

• npm run build succeeds
• npm run lint passes
• npm test passes (162 tests, 100% coverage)
• Verified dist/lib/version.js emits require("../package.json") which resolves to the package root

🤖 Generated with Claude Code

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Note

Low Risk
Build/release tooling and developer hooks only; runtime API behavior is unchanged aside from keeping lib/version.ts in sync at build time.

Overview
Version sync is centralized in scripts/sync-version.js (replacing root update-version.js), which rewrites lib/version.ts from package.json. prebuild runs that script before tsc, and the version npm lifecycle script now syncs and stages lib/version.ts for release commits.

Manual drift checks are removed: check-version.ts is deleted, the Husky pre-commit hook no longer runs it (only lint-staged), and ESLint/TS eslint configs stop treating check-version.ts as a project file.

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[mike-engel]

@senechko this won't work—some environments don't include the package.json file. See the original PR introducing this file and the original issue it solved

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Cursor Bugbot has reviewed your changes and found 1 potential issue.

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