chore: add Conductor configuration for parallel development (#88116)
## What?
Adds [Conductor](https://www.conductor.build/) configuration to enable
team members to use parallel Claude Code agents for Next.js development.
**Files added:**
- `.conductor/conductor.json` - Main configuration with setup/run
scripts
- `.conductor/README.md` - Documentation for using Conductor with
Next.js
- `.gitignore` - Added entry to ignore Conductor worktree directories
## Why?
Conductor is a Mac app that orchestrates multiple Claude Code agents in
parallel, each with its own isolated git worktree. This enables:
- **Parallel development** - Work on multiple features simultaneously
without branch conflicts
- **Isolated environments** - Each agent has its own clean working
directory
- **Faster iteration** - Multiple AI assistants can tackle different
aspects of a task concurrently
Sharing this configuration allows other team members to leverage the
same workflow for Next.js development.
## How?
The configuration includes:
1. **Setup script** that runs when creating a new workspace:
- Enables corepack for pnpm
- Validates Node.js version (18+)
- Installs dependencies with `--prefer-offline`
- Runs `pnpm build`
2. **Run script** that starts watch mode (`pnpm --filter=next dev`) for
fast iteration
3. **Environment variables** to disable telemetry during development
4. **Gitignore entry** (`.conductor/*/`) to prevent accidentally
committing worktree contents