This app uses Val Town Blob Storage to manage data. Every Val Town account comes with free blob storage for simple key-value data persistence. This folder contains:

• queries.ts - functions to read and write grid data to blob storage, which are imported and used in the main Hono server in /backend/index.ts

Instead of using SQLite, this app uses blob storage because:

• Simpler for this use case (no complex relationships)
• No need for database migrations
• Easy JSON serialization/deserialization
• Perfect for storing arrays of grid objects

The app stores a single blob with the key savedGrids containing an array of Grid objects. Each grid has:

• id: unique identifier
• cells: array of 16 booleans representing the 4x4 grid state
• timestamp: when the grid was created
• saved: whether the grid has been saved (prevents duplicate saves)

The queries file exports functions to:

• getSavedGrids(): Retrieve all saved grids from blob storage
• saveGrid(grid): Add a new grid to the saved collection (with duplicate prevention)

The functions handle cases where the blob doesn't exist yet and provide proper error handling for duplicate saves.