Adds a new `dotenv` boolean field to bunfig.toml that controls whether
Bun automatically loads .env files at runtime. When set to false, .env
file loading is disabled while process.env still works normally.
This is useful for preventing accidental .env file loading in production
environments or when using alternative environment variable management.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>