v5.0.2

• Fixed: valve + pipes graphic now layers above the sensor/button row instead of being hidden behind it when closed.
• Fixed: valve no longer shrinks oddly on short/mobile card heights — size is fully config-driven now via scale sliders.
• Fixed: position slider in the editor no longer jerks/stutters while dragging.
• Added: valve_scale_mobile / valve_scale_tablet and pipes_scale_mobile / pipes_scale_tablet — independent scale controls (with sliders + minus/plus buttons) for the valve graphic vs. the pipes/water canvas, per phone vs tablet/desktop.
• Changed: leak-sensor blocks are now square, and up to 4 are supported (1: left of button, 2: right of button, 3: above 1, 4: above 2). Removing one still auto-shifts the rest into place.
• See README changelog for full details.