/investigate

Read-only fact-gathering — understand the codebase before acting.

Structured execution spec: protocol.yon. Read it for the canonical rules and step sequence; this file is explanation. The two must stay in sync — if you edit one, update the other and refresh the @STAMP date.

Caller Options. Before executing, run the Caller Options protocol (caller-options/SKILL.md): triage this invocation for material optionality across the venues and modes declared in front-matter; if one path clearly dominates, proceed silently; otherwise surface the options to the caller. A resolved-invocation marker means COP already ran — execute the fixed combination directly, do not re-enter COP.

Fact-Gathering Protocol. READ ONLY. No plans, no code, no refactors. Just facts.

Phase 1 — Context Loading

1. Parse the query — identify target files, directories, or concepts from the user's request.
2. List files — read the target directory structure.
3. Read entrypoints — load package.json, README.md, index files, or whatever serves as the front door to the target area.

Phase 2 — Pattern Discovery