Set up this Rails project for Conductor, the Mac app for parallel coding agents.

When to Use

• You need to configure a Rails project so it runs correctly inside Conductor workspaces.
• The project should support parallel coding agents with isolated ports, Redis settings, and shared secrets.
• You want the standard conductor.json, bin/conductor-setup, and script/server scaffolding for a Rails repo.

What to Create

1. conductor.json (project root)

Create conductor.json in the project root if it doesn't already exist:

{
  "scripts": {
    "setup": "bin/conductor-setup",
    "run": "script/server"
  }
}

2. bin/conductor-setup (executable)

Create bin/conductor-setup if it doesn't already exist:

#!/bin/bash
set -e

# Symlink .env from repo root (where secrets live, outside worktrees)
[ -f "$CONDUCTOR_ROOT_PATH/.env" ] && ln -sf "$CONDUCTOR_ROOT_PATH/.env" .env

# Symlink Rails master key
[ -f "$CONDUCTOR_ROOT_PATH/config/master.key" ] && ln -sf "$CONDUCTOR_ROOT_PATH/config/master.key" config/master.key

# Install dependencies
bundle install
npm install

Make it executable with chmod +x bin/conductor-setup.

3. script/server (executable)

Create the script directory if needed, then create script/server if it doesn't already exist:

#!/bin/bash

# === Port Configuration ===
export PORT=${CONDUCTOR_PORT:-3000}
export VITE_RUBY_PORT=$((PORT + 1000))

# === Redis Isolation ===
if [ -n "$CONDUCTOR_WORKSPACE_NAME" ]; then
  HASH=$(printf '%s' "$CONDUCTOR_WORKSPACE_NAME" | cksum | cut -d' ' -f1)
  REDIS_DB=$((HASH % 16))
  export REDIS_URL="redis://localhost:6379/${REDIS_DB}"
fi

exec bin/dev

Make it executable with chmod +x script/server.

4. Update Rails Config Files

For each of the following files, if they exist and contain Redis configuration, update them to use ENV.fetch('REDIS_URL', ...) or ENV['REDIS_URL'] with a fallback: