🗄 App.G — Golden Data (PDG/CODATA/Planck raw) · refs #30

# App.G — Golden Data

**Refs**: #30 · #63

## Content
- PDG 2024 raw values
- CODATA 2022 raw values
- Planck 2018 cosmological data
- NuFIT 5.3 neutrino mixing

## Acceptance
- [ ] All raw data tables | `Closes #104`