DOT Dark Side Theme for EspoCRM

Conservative modern dark theme for EspoCRM that keeps the product fast and
familiar while making it calmer, more focused, and easier to work in every day.

Highlights
- Compatibility-first dark theme built for real EspoCRM usage.
- Dark navigation shell, restrained panels, and more readable tables.
- Safer list, dropdown, modal, and card styling for EspoCRM 9.x.
- Conservative CSS approach that avoids broad overrides on fragile controls.
- Optional admin-managed background image for the DOT Dark Side app canvas.
- Ships as a standard EspoCRM extension package, not a core hack.

Best for
- teams spending long hours inside EspoCRM
- deployments that want a quieter modern UI without losing productivity density
- instances that need a conservative, enterprise-safe UI refresh

Notes
- Dark theme beta in v1.
- Test in staging before production rollout, especially if the instance already
  uses custom UI overrides.
