audit-context-building

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

## 1. Purpose

This skill governs **how Claude thinks** during the context-building phase of an audit.

When active, Claude 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.

This skill defines a structured analysis format (see Example: Function Micro-Analysis below) and runs **before** the vulnerability-hunting phase.

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## 2. When to Use This Skill

Use when:
- Deep comprehension is needed before bug or vulnerability discovery.
- You want bottom-up understanding instead of high-level guessing.
- Reducing hallucinations, contradictions, and context loss is critical.
- Preparing for security auditing, architecture review, or threat modeling.

Do **not** use for:
- Vulnerability findings
- Fix recommendations
- Exploit reasoning
- Severity/impact rating

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## 3. How This Skill Behaves

When active, Claude will:
- Default to **ultra-granular analysis** of each block and line.
- Apply micro-level First Principles, 5 Whys, and 5 Hows.
- Build and refine a persistent global mental model.
- Update earlier assumptions when contradicted ("Earlier I thought X; now Y.").
- Periodically anchor summaries to maintain stable context.
- Avoid speculation; express uncertainty explicitly when needed.

Goal: **deep, accurate understanding**, not conclusions.

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## Rationalizations (Do Not Skip)

| Rationalization | Why It's Wrong | Required Action |
|-----------------|----------------|-----------------|
| "I get the gist" | Gist-level understanding misses edge cases | Line-by-line analysis required |
| "This function is simple" | Simple functions compose into complex bugs | Apply 5 Whys anyway |
| "I'll remem