nano-banana-builder

# Nano Banana Builder Image generation and post-processing via two deterministic Python scripts (`nano-banana-generate.py` and `nano-banana-process.py`). Your job is prompt crafting and flag selection; the scripts handle all mechanical operations. ## Instructions ### 1. Validate the environment Before any generation call, confirm the API key is set. The scripts read `GEMINI_API_KEY` (or `GOOGLE_API_KEY`) from the environment and will fail without it. Checking this first avoids wasted time on API calls that will error immediately. ### 2. Choose the right script and subcommand Translate user intent into the correct script call. Always call the scripts — never write inline PIL/sharp/image-processing code, because that duplicates tested logic and bypasses the deterministic pipeline. | User wants | Script + subcommand | Key flags | |------------|-------------------|-----------| | Generate a single image | `nano-banana-generate.py generate` | `--prompt`, `--model`, `--aspect-ratio` | | Generate a sprite/character | `nano-banana-generate.py generate` | `--model pro`, `--aspect-ratio 1:1` | | Generate card art | `nano-banana-generate.py generate` | `--model flash`, `--aspect-ratio 16:9` | | Generate backgrounds | `nano-banana-generate.py generate` | `--model flash`, `--aspect-ratio 9:16` (vertical) or `16:9` (landscape) | | Style-match a reference | `nano-banana-generate.py with-reference` | `--reference`, `--prompt` | | Batch generate enemies/items | `nano-banana-generate.py ...