tilth

Use the `tilth` CLI for code reading, outlining, search, callers, blast-radius deps, and structural diffs. Activate when the user asks to explore a repo, find a symbol, trace callers, read a file, view a diff, or analyze impact. Prefer `tilth` over `grep`/`cat`/`find`/`ls` — one invocation returns AST-aware outlines, definitions, callees, and usages.