Day 52 of 52 · about 40 min · Subagents · Bonus
Final capstone: ship a feature from plan to pull request
The last day puts the whole workflow on one real change: plan it, build it in its own worktree with your tests checking every reply, get it reviewed, and open the pull request.
You’ll finish with
- One feature shipped as a reviewed pull request
- A loop you can repeat on every change
You’ll need
- Your repository from Day 29, with the test hook pushed to the default branch
- The GitHub CLI
gh, signed in, so Claude can open the pull request - One small feature you need, with a clear way to check it works
Before you start
Tell us about your setup and the steps change to fit it. Your answers stay in this browser, and you can change them at any time.
Which system are you on?
Commands differ between systems. Pick the one you’ll run Claude Code on.
The steps
One step at a time. When a step’s check matches, tick it and the next one opens.
Step 1 of 5: Start in a worktree
A separate checkout, so your main folder stays untouched.Add
.claude/worktrees/to.gitignorefirst. New worktrees start from your remote default branch, so they get the hook you pushed. A worktree is a fresh checkout: ask Claude to install dependencies.TerminalRun: claude --worktree my-feature
What happens: Claude starts in
.claude/worktrees/my-feature/, on a new branchworktree-my-feature.One command creates the worktree and starts Claude in it. Check it worked
In another terminal,
git worktree listshows the new worktree.Step 2 of 5: Plan the feature
Nothing is edited until you approve.Start the prompt with
/plan. Claude explores and writes a plan. PressCtrl+Gto edit it in your editor, then approve it.In Claude CodeYou type: /plan add <your feature>. Done means <how we check it>. List the files you will change and the tests you will add.
What happens: Claude reads the code and writes a plan.
Plan first, inside the worktree. Check it worked
The plan names the files to change and the tests to add, and you approved it.
Step 3 of 5: Build with tests on every reply
Your Stop hook checks each reply.Approving the plan switches Claude to editing. Each time it finishes a reply, the hook runs your tests.
In order:
Claude
Claude implements the plan
Hook
Stop hook runs the tests
If a test fails
Claude fixes it
The failures go back to Claude
If all pass
Claude reports back
The loop that keeps broken code out. Check it worked
Claude’s last reply ends with the tests passing, and
/hookslists the Stop hook.If it didn’t work
/hooks shows no Stop hook.
The hook isn’t on the remote default branch, which new worktrees start from. Push it and start a new worktree.
Step 4 of 5: Review before you commit
`/code-review` checks the changes in a subagent.It reviews uncommitted changes in a background subagent with its own context. Ask Claude to fix the findings you agree with.
In Claude CodeYou type: /code-review
What happens: You can keep working while the review runs.
A bug review of the change. Check it worked
The findings arrive in your conversation, and the ones you accepted are fixed with the tests passing.
Step 5 of 5: Commit and open the pull request
Claude writes the message and opens the PR.In Claude CodeYou type: commit with a descriptive message and open a PR
What happens: Claude commits, pushes the branch and uses
ghto open the PR.The last prompt of the challenge. Check it worked
The PR is open on GitHub with a clear description, and
claude --from-pr <number>finds this session later.
Finish · 5 of 5 steps to go
You shipped a change end to end
What you’ll have checked
- Claude planned before it edited
- The tests passed and the review findings were handled
- The pull request is open
Lesson updates by email
Get lesson updates by email
Leave your email and we’ll tell you when we add or update a lesson.
Claude Code for your team
Want Claude Code set up across your team?
HorizonLux sets up and repairs Claude Code for teams: CLAUDE.md rules, hooks that enforce them and reviewed MCP servers. Book a free call to talk it through.
Related
Sources
Checked against the official Claude Code docs on .
- Run parallel sessions with worktrees
- Choose a permission mode
- Best practices for Claude Code
- Code Review
- Common workflows
- Hooks reference
Independent resource, not affiliated with Anthropic. HorizonLux wrote this lesson; Claude Code is made by Anthropic.