deep-research

Exhaustive investigation with citations and structured findings. Use when thorough coverage is needed, all sources must be cited, or research will inform critical decisions. Triggers on: 'use deep-research mode', 'deep research', 'exhaustive investigation', 'thorough research', 'cite all sources', 'comprehensive analysis', 'leave no stone unturned', 'research everything'. Read-only mode - investigates and documents but doesn't modify code.