Grepai Ignore Patterns

This handles ignore pattern configuration for GrepAI, the code indexing tool. You'll use it when your search results are cluttered with node_modules, build artifacts, or generated code you don't want indexed. The patterns work like gitignore (which is also automatically respected) and go in .grepai/config.yaml. Supports exact matches, wildcards, and glob patterns for directories, files, and paths. The examples are comprehensive, covering JavaScript through Rust projects, with special sections on excluding tests versus penalizing them with boost factors. One nice touch is the verification section showing how to check if your index is bloated. Straightforward configuration that makes search actually usable on large codebases.