Grepai Search Boosting

This configures search result boosting in GrepAI so you can push production code to the top and bury tests, docs, and vendor files in rankings. You set penalty factors (like 0.5 for tests, 0.3 for node_modules) and bonus factors (1.1 for /src/, 1.2 for /core/) in a YAML config. The math is simple: a 0.85 score on a test file becomes 0.425 with a 0.5 penalty, so actual source code ranks higher even if the raw match is slightly worse. The prebuilt configs for Go, Python, and frontend projects are solid starting points. It's the difference between hunting through test files every search and actually finding the implementation you need first try.