# Quickstart: Edit Combatant

**Feature**: 004-edit-combatant

## Setup

```bash
pnpm install          # Install dependencies (if needed)
pnpm check            # Verify everything passes before starting
```

## Development

```bash
pnpm --filter web dev          # Start dev server at localhost:5173
pnpm test:watch                # Run tests in watch mode
```

## Implementation Order

1. **Domain event** — Add `CombatantUpdated` to `events.ts`
2. **Domain function** — Create `edit-combatant.ts` with pure `editCombatant` function
3. **Domain tests** — Create `edit-combatant.test.ts` with acceptance scenarios + invariants
4. **Domain exports** — Re-export from `index.ts`
5. **Application use case** — Create `edit-combatant-use-case.ts`
6. **Application exports** — Re-export from `index.ts`
7. **Hook** — Add `editCombatant` action to `useEncounter` hook
8. **UI** — Add inline name editing to `App.tsx`

## Verification

```bash
pnpm check    # Must pass — format + lint + typecheck + test
```

## Key Files to Reference

- `packages/domain/src/add-combatant.ts` — Pattern to follow for domain function
- `packages/domain/src/remove-combatant.ts` — Pattern for "not found" error handling
- `packages/application/src/add-combatant-use-case.ts` — Pattern for use case
- `apps/web/src/hooks/use-encounter.ts` — Pattern for hook wiring