git:20260828.d30d25a to git:20260828.f347144

# Agent workflow

Every task moves through the same four beats, each backed by a skill from

this collection (or installed alongside it — see [Skill sources](#skill-sources)).

Drop this file into a repo as `AGENTS.md` and fill in the repo-specific

callouts; it also governs work in this repo itself.

## Workflow

worktree branched from `origin/main` so agents can work in parallel

without conflicts. Never build on `main`.

2. **Build — `/code-structure`.** Write code to the service-layer

architecture: actions/boundaries orchestrate the "why/when", a service

layer owns the reusable "how", with explicit inputs and structured

returns.

3. **Prove — `/evidence-driven-testing`.** Verify with the repo's checks

plus runtime evidence. Capture the **before** state while reproducing the

issue — prior to fixing it, when it is cheapest — and the **after** once

the change works.

4. **Ship — `/before-and-after`, then `/greploop`.** Open the PR with

before/after proof embedded in the description (screenshot or video

whenever the change has a visible surface; measured numbers or output

pairs when it doesn't). Run `/greploop` — or `/greploop-apps` when the PR

exceeds Greptile's file-count limit — until Greptile reports **5/5 with

zero unresolved comments**. Finish by presenting the PR URL.

Ship-beat notes:

- `/before-and-after` drives the `@vercel/before-and-after` CLI. `--markdown`

uploads the pair and prints a PR-ready table; it also accepts existing

PNGs, so evidence gathered while developing can be reused as-is.

- In containers/VMs where Chrome fails with "No usable sandbox", set

`AGENT_BROWSER_ARGS="--no-sandbox"` for the capture command.

- The default upload host (0x0.st) is public — fine for ordinary UI shots;

pass `--upload-url` for anything sensitive.

## Multi-agent rules

- Never commit directly to `main`.

- One worktree and one branch per task and per agent — never reuse or modify

another agent's worktree, branch, or uncommitted work.

- **Scope check** before starting: skim open PRs' changed files

(`gh pr list`, `gh pr diff <n> --name-only`) and look for uncommitted work

in shared checkouts. On overlap, stop and ask for direction.

- Never force-push to `main` — and never plain `--force` anywhere; only

`--force-with-lease`, only on your own task branch.

- Resolve lockfile conflicts by regenerating, never by hand-merging.

- Worktrees don't isolate shared resources: confirm a dev-server port

answers *your* process before trusting it, and don't run schema

experiments against a shared database.

- If a conflict can't be resolved confidently, stop and report instead of

guessing.

## Completing a task

1. Keep changes limited to the assigned task.

2. Run the repo's checks *(repo-specific: list the exact commands here)*.

3. Assemble the evidence captured along the way into before/after pairs.

4. Commit with a clear message, rebase onto the latest `origin/main`, and

rerun the checks.

5. Push (`git push -u origin <branch>`; after rebasing an already-pushed

branch, `--force-with-lease`).

6. Open the PR. The body must explain what changed, how it was tested (every

claim backed by evidence), before/after proof, and any risks or follow-up

work.

7. Run `/greploop` (or `/greploop-apps`) until **5/5 with zero unresolved

comments**.

8. End by presenting the PR URL.

Do not merge the PR unless explicitly instructed. Keep the worktree until

the PR is merged or closed.

## Repo-specific sections to add

When dropping this file into a project, append what agents need to execute

the beats there: commands & checks, hard invariants (security and

architecture rules), an environment quick reference, local test

infrastructure (stubs, fixtures), and anything that can't be tested locally.

## Skill sources

| Skill | Source |

|---|---|

| `before-and-after` | this repo, vendored from [vercel-labs/before-and-after](https://github.com/vercel-labs/before-and-after) (or `npx skills add vercel-labs/before-and-after`) |

| `greploop` | this repo, vendored from [greptileai/skills](https://github.com/greptileai/skills) |

| `greploop-apps` | this repo (local variant of greploop for huge PRs; no separate upstream) |