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Bug Triage

@dasien/RemoteCredentialRequestPOC
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Systematically reproduce, diagnose, and analyze bugs to determine root cause, assess severity, and plan fix strategy

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SKILL.md

name Bug Triage
description Systematically reproduce, diagnose, and analyze bugs to determine root cause, assess severity, and plan fix strategy
category analysis
required_tools Read, Write, Grep, Glob, Bash

Bug Triage

Purpose

Systematically analyze bug reports to reproduce issues, identify root causes, assess severity and impact, and determine the appropriate fix strategy and priority.

When to Use

  • Analyzing incoming bug reports
  • Investigating production issues
  • Diagnosing test failures
  • Planning bug fix work
  • Prioritizing bug backlog

Key Capabilities

  1. Bug Reproduction - Create reliable steps to reproduce the issue
  2. Root Cause Analysis - Identify underlying cause, not just symptoms
  3. Severity Assessment - Determine impact and urgency accurately

Approach

  1. Understand the Report - Read bug description and symptoms
  2. Reproduce the Bug - Create minimal reproduction steps
  3. Isolate the Cause - Use logs, debugging, code inspection
  4. Assess Impact - Determine affected users and severity
  5. Determine Fix Strategy - Quick patch vs architectural fix
  6. Document Findings - Clear report for implementation team

Example

Context: Bug report "Users can't log in"

## Bug Analysis

**Symptoms**:
- Users see "Invalid credentials" error
- Occurs only for accounts created after Oct 15
- Works fine for older accounts

**Reproduction Steps**:
1. Create new user account
2. Log out
3. Attempt to log in with correct credentials
4. Observe error message

**Root Cause**:
- Code inspection of auth system
- Found: Password hashing algorithm changed Oct 15
- Old accounts use bcrypt, new accounts use argon2
- Login validation only checks bcrypt

**Location**: `src/auth/validator.py:45-67`

**Impact**:
- Severity: Critical (blocks all new users)
- Affected: ~500 accounts created in last week
- Workaround: None available

**Fix Strategy**:
- Update validator to check both hash types
- Add migration for existing argon2 hashes
- Estimated effort: 2 hours (small fix)
- Testing required: Auth system regression tests

**Priority**: Critical - Fix immediately
**Recommended Agent**: implementer (straightforward code fix)

Best Practices

  • ✅ Always try to reproduce before diagnosing
  • ✅ Check logs and error messages first
  • ✅ Use Grep/Glob to find related code quickly
  • ✅ Document exact reproduction steps
  • ✅ Consider data issues, not just code bugs
  • ✅ Assess severity objectively (not all bugs are critical)
  • ❌ Avoid: Assuming the cause without investigation
  • ❌ Avoid: Treating all bugs as equally urgent