D Execute

Core responsibilities:

• Read and execute FIX_PLAN.md tasks in order
• Implement code with strict fidelity to the plan
• Verify each task meets its done criteria
• Handle deviations appropriately
• Create FIX_SUMMARY.md with proposed commit message

Flow: Load Plan → Execute Tasks (Apply Code Standards) → Verify → Summarize

• ./.gtd/debug/current/FIX_PLAN.md — Must exist

Output:

• ./.gtd/debug/current/FIX_SUMMARY.md
• Source code changes

Tasks Are Atomic

Execute one task fully before moving to the next.

Verify Before Moving On

After each task, check its done criteria. Don't proceed if verification fails.

Plan Fidelity

Implement exactly what the plan specifies. No more, no less. If you think the plan is wrong:

• STOP and discuss
• Do NOT silently deviate

Trust Gradient

No Silent Failures

Empty catch blocks are forbidden.

Atomicity (State)

Before writing state-changing code, ask: "If this fails halfway, is data corrupted?"

• Use transactions
• Use finally for cleanup
• Use write-then-rename for files

No Magic Values

Every number, string, or value must have a name.

1. Load Fix Plan

Bash:

if ! test -f "./.gtd/debug/current/FIX_PLAN.md"; then
    echo "Error: No fix plan exists"
    exit 1
fi

Read ./.gtd/debug/current/FIX_PLAN.md.

2. Display Execution Start

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 GTD:DEBUG ► EXECUTING FIX
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Root Cause: {brief summary}

Tasks:
[ ] 1. {task 1 name}
[ ] 2. {task 2 name}
─────────────────────────────────────────────────────

3. Execute Tasks

Loop through each task in FIX_PLAN.md:

3a. Announce Task

► Task {N}: {name}
  Files: {files}

3b. Dependency Audit (Pre-Code)

Before calling any existing function/library:

1. Read its implementation/docs.
2. Note any surprising behavior.
3. Ensure you understand what it actually does, not just what it says it does.

3c. Execute Action (Coding)

Implement the task using .

• Validate edge inputs.
• Ensure atomic state changes.
• Add specific types (no any).

3d. Verify Done Criteria

Check the task's <done> criteria. If verified:

✓ Task {N} complete

If not verified:

• Attempt to fix (using Deviation Policy).
• If still failing, STOP and ask user.

3e. Track Deviations

Note any work done outside the plan (additional bugs fixed, extra measures) for the Summary.

4. Verify Success Criteria

After all tasks, check plan's success criteria:

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 GTD:DEBUG ► VERIFYING FIX
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

[✓] Original symptom no longer occurs
[✓] {criterion 2}

If any fail: Attempt to fix or ask user.

5. Reproduce Symptom

Follow the reproduction steps from ./.gtd/debug/current/SYMPTOM.md to verify the bug is actually fixed.

Document the result:

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 GTD:DEBUG ► REPRODUCTION TEST
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Following original reproduction steps...

Result: {Bug no longer occurs / Issue resolved}

6. Write FIX_SUMMARY.md

Write to ./.gtd/debug/current/FIX_SUMMARY.md:

# Bug Fix Summary

**Status:** Fixed
**Executed:** {date}

## Bug Summary

**Symptom:** {Brief description of symptom}
**Root Cause:** {Brief description of root cause}

## What Was Done

{Narrative summary of the fix implementation}

## Behaviour

**Before:** {System behaviour with the bug}
**After:** {System behaviour after fix}

## Tasks Completed

1. ✓ {task 1 name}
   - {what was implemented}
   - Files: {files changed}

2. ✓ {task 2 name}
   ...

## Deviations

{List any work done outside the plan, or "None"}

## Verification

- [x] Original symptom no longer reproduces
- [x] {success criterion 2}
- [x] {success criterion 3}

## Files Changed

- `{file 1}` — {what changed}

## Proposed Commit Message

fix({scope}): {short description of bug fix}

{Longer description of what was fixed and why}

Root cause: {brief root cause description}

- {change 1}
- {change 2}

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 GTD:DEBUG ► BUG FIXED ✓
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Fix summary written to: ./.gtd/debug/current/FIX_SUMMARY.md

Tasks: {X}/{X} complete
Files changed: {count}

─────────────────────────────────────────────────────

▶ Next Steps

1. Review the fix summary
2. Run additional tests if needed
3. Commit using the proposed message

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