Bumped project version to `2.2.0-alpha-2` in `build.gradle.kts`. Introduced `SampleEntity`, `SamplePartEntity`, and `SampleEntityQueryProvider` for database handling. Added `SampleDao` with a sample query function. Updated SVG utilities with a `viewbox` extension and enhanced `RequestHandler` to set content type for HTML responses.
Upgrade knob interaction logic and dependency versions.
Reworked knob value adjustment to use precise mouse coordinates via `setValueByMouseCoords`. Improved user interaction by enhancing activation handling and CSS styling. Updated project dependencies, removed unused packages, and set version to 1.2.0 for compatibility and feature stability.
