Debug Reproduced

User has reproduced the bug. Analyze log evidence and iterate.

User Notes

$ARGUMENTS

Workflow

Step 1: Analyze Logs

Run the analyzer:

bun ${CLAUDE_PLUGIN_ROOT}/scripts/analyze-logs.mjs

Or read raw logs:

cat .debug/debug.log

Step 2: Evaluate Hypotheses

For each hypothesis, assign one verdict:

• CONFIRMED: Log evidence proves this is the cause
• REJECTED: Log evidence rules this out
• INCONCLUSIVE: Need more instrumentation

Always cite specific log entries as evidence:

Hypothesis A: CONFIRMED

• Log at 14:32:05.123 shows items is undefined at function entry
• Log at 14:32:05.156 shows error "Cannot read property 'length' of undefined"
• Root cause: order.items not provided by caller

Hypothesis B: REJECTED

• Logs show loadUser completed at 14:32:05.100
• renderProfile started at 14:32:05.200
• Order is correct, no race condition

Step 3: Take Action

If hypothesis CONFIRMED:

1. Implement the fix
2. Keep instrumentation in place (do NOT remove logs yet)
3. Provide new reproduction steps to verify fix
4. After user reproduces, compare before/after logs — cite specific entries showing the fix worked

If INCONCLUSIVE:

1. Add more instrumentation to narrow down
2. Provide new reproduction steps

If ALL hypotheses REJECTED:

1. Generate NEW hypotheses from different subsystems
2. Add instrumentation for new hypotheses
3. Provide new reproduction steps

Step 4: Next Iteration

Provide exact reproduction steps:

<reproduction_steps>

1. [Step 1]
2. [Step 2] ... </reproduction_steps>

End with:

Follow these steps, then run /debug-reproduced when done, or /debug-fixed if the issue is resolved.

Critical Rules

1. NEVER fix without 100% confidence with log proof
2. NEVER remove instrumentation before verified fix
3. ALWAYS cite specific log entries — "Log at 14:32:05 shows X was null"
4. Iteration is expected — Failed fixes mean new hypotheses, not giving up
5. 3 failed fixes = step back — Reconsider assumptions, look at different subsystems
6. Taking longer is better — Thorough debugging beats quick guesses

Note on Log Accumulation

Logs accumulate across iterations (not auto-cleared). This allows comparing behavior across reproduction cycles. Run bun ${CLAUDE_PLUGIN_ROOT}/scripts/clear-logs.mjs if you need a fresh start.