System and Generic Utilities

Part of src/cmds/ — see also docs/contributing/TECHNICAL.md

Specifics

read.rs uses core/filter for language-aware code stripping (FilterLevel: none/minimal/aggressive)
search.rs backs both rtk grep and rtk rg: it runs the invoked engine (never substituting one for the other) and groups its output, reading core/config for limits.grep_max_results and limits.grep_max_per_file. Format-altering flags (-c, -l, -L, -o, -Z) bypass RTK filtering and run raw.
local_llm.rs (rtk smart) uses core/filter for heuristic file summarization
format_cmd.rs is a cross-ecosystem dispatcher: auto-detects and routes to prettier_cmd or ruff_cmd (black is handled inline, not as a separate module)