ce-debug

系统化定位根因并给出或实现缺陷修复方案。

系统化定位根因并给出修复方案，包含复现步骤、原因链分析和修复建议或补丁。适合遇到崩溃、测试失败、堆栈追踪或多次修复无效时使用。特点是追溯完整因果链、优先保守修复并推荐带测试的修复路径，减少返工。

# Debug and Fix

Find root causes, then fix them. This skill investigates bugs systematically — tracing the full causal chain before proposing a fix — and optionally implements the fix with test-first discipline.

<bug_description> #$ARGUMENTS </bug_description>

## Core Principles

These principles govern every phase. They are repeated at decision points because they matter most when the pressure to skip them is highest.

1. **Investigate before fixing.** Do not propose a fix until you can explain the full causal chain from trigger to symptom with no gaps. "Somehow X leads to Y" is a gap.
2. **Predictions for uncertain links.** When the causal chain has uncertain or non-obvious links, form