v0.9.0

Highlights

• Added a full interactive configuration workflow in the frontend.
• Added runtime configuration API in the backend with hot reload.
• Extended the solver to support dynamic vacation names and configurable simultaneous staffing.
• Improved validation and persistence safety for config.json.

What's Changed

• feat: interactive runtime config UI + dynamic vacations and staffing by @Vhivi in #195

Full Changelog: v0.8.0...v0.9.0