Code style, TypeScript, and naming

When to use: Biome formatting, import style, strict TypeScript, naming (including React file names), or generated files. For where domain code lives, see architecture-boundaries.

Code style (Biome)

Biome config (biome.json) is the source of truth:

• Indentation: 2 spaces
• Max line width: 120
• Strings: double quotes
• Semicolons: as needed
• Ignore generated/output paths: dist/**, coverage/**, .turbo/**, node_modules/**, **/*.gen.ts, **/models.dev.json
• Prefer package-local formatting: pnpm --filter @app/api format

Imports