Pin package versions from @latest to concrete versions for reproducible
development environments across the team.
Changes:
- go: latest → 1.25.1
- hugo: latest → 0.151.0
- nodejs: latest → 24.10.0
- Added nixpkgs-unstable entry (2025-10-20)
This ensures all developers use identical tool versions, improving
build reproducibility and reducing "works on my machine" issues.
- Upgrade Hugo from v0.125.4 to v0.151.0+extended
- Upgrade Docsy theme from v0.10.0 to v0.12.0
- Update Bootstrap to v5.3.8
- Update Go to v1.25.1
- Add Node.js for PostCSS support
- Install PostCSS, autoprefixer dependencies
- Remove obsolete custom render-heading template
- Update minimum Hugo version requirement to 0.151.0