Deep Context Builder Skill (Ultra-Granular Pure Context Mode)

Lifecycle Position

Phase 5 (Review — optional deep-dive). For security audit or deep architectural review. Load after code-analyzer for targeted analysis; this is not the first-stop review skill.

1. Purpose

This skill governs the analysis posture during the context-building phase of an audit.

When active, Codex will:

• Perform line-by-line / block-by-block code analysis by default.
• Apply First Principles, 5 Whys, and 5 Hows at micro scale.
• Continuously link insights → functions → modules → entire system.
• Maintain a stable, explicit mental model that evolves with new evidence.
• Identify invariants, assumptions, flows, and reasoning hazards.