Make the project start more reliably in the current Windows bash setup, add a safe root .env.example for onboarding, and lower the backend Python floor to 3.11 to match the validated local environment.
Use shell-based setup and startup flows that work more reliably across
Windows bash environments and Linux. This keeps environment bootstrap
and service startup aligned while avoiding fragile process handling.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
