Writing Plans

Overview

Write comprehensive implementation plans assuming the engineer has zero codebase context and questionable taste. Document everything: which files to touch, complete code, testing, how to verify. Bite-sized tasks. DRY. YAGNI. TDD. Frequent commits.

Announce at start: "I'm using the nobody-writes-plans skill to create the implementation plan."

Save plans to: docs/plans/YYYY-MM-DD-<feature-name>.md

Bite-Sized Task Granularity

Each step is one action (2–5 minutes):

• •"Write the failing test" — step
• •"Run it to make sure it fails" — step
• •"Implement the minimal code to make the test pass" — step
• •"Run the tests and make sure they pass" — step
• •"Commit" — step

Plan Document Header

Every plan MUST start with:

# [Feature Name] Implementation Plan

**Goal:** [One sentence describing what this builds]
**Architecture:** [2–3 sentences about approach]
**Tech Stack:** [Key technologies/libraries]

Task Structure

### Task N: [Component Name]

**Files:**
- Create: `exact/path/to/file.py`
- Modify: `exact/path/to/existing.py:123-145`
- Test: `tests/exact/path/to/test.py`

**Step 1: Write the failing test**
```python
def test_specific_behavior():
    result = function(input)
    assert result == expected
```

**Step 2: Run test to verify it fails**
Run: `pytest tests/path/test.py::test_name -v`
Expected: FAIL with "function not defined"

**Step 3: Write minimal implementation**
```python
def function(input):
    return expected
```

**Step 4: Run test to verify it passes**
Run: `pytest tests/path/test.py::test_name -v`
Expected: PASS

**Step 5: Commit**
```bash
git add tests/path/test.py src/path/file.py
git commit -m "feat: add specific feature"
```

Remember

• •Exact file paths always
• •Complete code in plan (not "add validation")
• •Exact commands with expected output
• •DRY, YAGNI, TDD, frequent commits

Execution Handoff

After saving the plan, offer:

1. •Subagent-driven (this session) — /implement <feature> dispatches scout → planner → worker
2. •Manual execution — use the nobody-executes-plans skill in a new session