Collect and store metadata about each Pokemon generation to support genlocke features. This data is needed so the app can present generation-aware options when setting up a genlocke (e.g. "pick one game per generation").
## Data to gather per generation
- **Generation number** (1–9)
- **Main region** (e.g. Gen 1 → Kanto, Gen 2 → Johto, etc.)
- **Games in the generation** — including remakes and enhanced versions:
- Original titles (e.g. Red, Blue, Yellow)
- Remakes that belong to the generation's region (e.g. FireRed/LeafGreen are Gen 1 region but Gen 3 era)
- Consider whether remakes should be listed under their original generation (by region) or their release generation (by engine/dex) — genlocke players typically organize by region
## Notes
- This could be stored as seed data (JSON) or as a database table
- The existing Game model already has `generation` and `region` fields, so some of this data may already be derivable from existing games in the DB
- However, a dedicated generations reference would be useful for UI purposes (showing all generations even if not all games are seeded yet)
