Implement SpiralDB - a novel data storage format that encodes structured
data into PNG images using an 8-color palette. Data grows in a spiral
pattern from the center outward, enabling infinite expansion.
Features:
- 8-color palette (3-bit per pixel) for compression robustness
- Spiral coordinate system with ring-based organization
- Schema-based serialization (int, bool, string, timestamp, arrays)
- Record management with CRUD operations and status tracking
- PNG export/import with pako compression
- Browser support (Canvas, Blob, DataURL)
- Todo schema as reference implementation
Storage structure:
- Ring 0: Magic byte (validation)
- Ring 1: Database header (version, flags, counts)
- Ring 2: Schema definition
- Ring 3+: Master index (spans multiple rings if needed)
- Ring 4+: Record data
