v1.4.1

No Features or Breaking Changes exist in this set, so I dropped those two headings. The chore and docs commits went under Improvements, and the duplicate "routine repo maintenance" collapsed to one line.

## [v1.4.1] - 2026-09-04

### Bug Fixes
- Bump transitive postcss and nanoid to patched versions
- Bump transitive vite and esbuild to patched versions

### Improvements
- Use an optional chain in ConfigPreview
- Read the bumped version from `pnpm version --json`
- Migrate the build from tsup to tsdown
- Upgrade pnpm to 12 and refresh dependencies
- Repin GitHub Actions to current releases
- Ignore local mise overrides
- Correct the @types/node override rationale
- Routine repository maintenance