finishing-a-development-branch

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• SKILL.md

SKILL.md (first lines)

# Finishing a Development Branch

## Overview

Guide completion of development work by presenting clear options and handling chosen workflow.

**Core principle:** Verify tests → Detect environment → Present options → Execute choice → Clean up.

**Announce at start:** "I'm using the finishing-a-development-branch skill to complete this work."

## The Process

### Step 1: Verify Tests

**Before presenting options, verify tests pass:**

```bash
# Run project's test suite
npm test / cargo test / pytest / go test ./...
```

**If tests fail:**
```
Tests failing (<N> failures). Must fix before completing:

[Show failures]

Cannot proceed with merge/PR until tests pass.
```

Stop. Don't proceed to Step 2.

**If tests pass:** Continue to Step 2.

### Step 2: Detect Environment

**Determine workspace state before presenting options:**

```bash
GIT_DIR=$(cd "$(git rev-parse --git-dir)" 2>/dev/null && pwd -P)
GIT_COMMON=$(cd "$(git rev-parse --git-common-dir)" 2>/dev/null && pwd -P)
```

This determines which menu to show and how cleanup works:

| State | Menu | Cleanup |
|-------|------|---------|
| `GIT_DIR == GIT_COMMON` (normal repo) | Standard 4 options | No worktree to clean up |
| `GIT_DIR != GIT_COMMON`, named branch | Standard 4 options | Provenance-based (see Step 6) |
| `GIT_DIR != GIT_COMMON`, detached HEAD | Reduced 3 options (no merge) | No cleanup (externally managed) |

### Step 3: Determine Base Branch

```bash
# Try common base branches
git merge-base HEAD main 2>/dev/null || git merge-base HEAD master 2>/dev/null
```

Or ask: "This branch split from main - is that correct?"

### Step 4: Present Options

**Normal repo and named-branch worktree — present exactly these 4 options:**

```
Implementation complete. What would you like to do?

1. Merge back to <base-branch> locally
2. Push and create a Pull Request
3. Keep the branch as-is (I'll handle it later)
4. Discard this work

Which option?
```

**Detached HEAD — present exactly these 3 options:**

```
Implementation complete. You're on a detached HEAD (externally managed workspace).

1. Push as new branch and create a Pull Request
2. Keep as-is (I'll handle it later)
3. Discard this work

Which option?
```

**Don't add explanation** - keep options concise.

### Step 5: Execute Choice

#### Option 1: Merge Locally

```bash
# Get main repo root for CWD safety
MAIN_ROOT=$(git -C "$(git rev-parse --git-common-dir)/.." rev-parse --show-toplevel)
cd "$MAIN_ROOT"

# Merge first — verify success before removing anything
git checkout <base-branch>
git pull
git merge <feature-branch>

# Verify tests on merged result
<test command>

# Only after merge succeeds: cleanup worktree (Step 6), then delete branch
```

Then: Cleanup worktree (Step 6), then delete branch:

```bash
git branch -d <feature-branch>
```

#### Option 2: Push and Create PR

```bash
# Push branch

From rpamis/comet, MIT.

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