Purpose Use this skill when creating or modifying Biome's parsers. Covers grammar authoring with ungrammar, lexer implementation, error recovery strategies, and list parsing patterns. Prerequisites 1. Install required tools: 2. Understand the language syntax you're implementing 3. Read for detailed concepts Common Workflows Create Grammar for New Language Create a file in (e.g., ): Naming conventions: - Prefix all nodes with language name: , - Unions start with : - Error recovery nodes use : - Lists end with : - Lists are mandatory (never optional), empty by default Generate Parser from Gramm…