- Introduced `generate-showcase-portraits.ts` using the Gemini API for synthetic portrait generation.
- Added `PORTRAITS` data structure for controlling persona appearances and scenes.
- Implemented functionality to ensure consistent identity across generated photos.
- Integrated `.env` API key support and optional modes for targeted regeneration (`--only`, `--force`, `--dry-run`).
- Updated related documentation (`marketing-visuals.md` and `README.md`) with generation guidelines and usage instructions.
- Seed script (`seed-showcase.ts`) enhanced to link generated photos with fictional profiles in the showcase dataset.