Fast, token-efficient codebase reconnaissance. Given a task, a set of changed files, or a question, it finds the relevant files, their dependents/callers, related tests, and any governing spec/PRD/issue — and returns one concise context report. Divides the tree across parallel subagents when available, falls back to a single sequential sweep otherwise. Use before implementing, debugging, or reviewing, or whenever you need to know where something lives. Triggers on: 'find', 'locate', 'where is', 'scout', 'recon', 'map the codebase', 'gather context', 'what touches'.
