explore-codebase

FIRST: Determine level before exploring. Parse from natural language (e.g., "quick", "do a quick search", "thorough exploration", "very thorough") or auto-select if not specified: single entity lookup → quick; single bounded subsystem (per Definitions) → medium; query spanning 2+ bounded subsystems OR explicit interaction queries ("how do X and Y interact") → thorough; "comprehensive"/"all"/"architecture"/"audit"...

Trigger conflicts: When a query contains triggers from multiple levels, use the highest thoroughness level indicated (very-thorough > thorough > medium > quick). Example: "where is the comprehensive auth?" → very-thorough ("comprehensive" overrides "where is").

| quick | No research file, no todos, 1-2 search calls (Glob or Grep, not counting Read); if first search returns no results, try one alternative (if Glob failed, use Grep with same keyword; if Grep failed, use broader Glob like /keyword). If search returns >5 files matching the pattern (before filtering by relevance), note "Query broader than expected for quick mode. Consider re-running with medium thoroughness."...