Expose snapLayoutsEnabled through MobileShellSettings and store it\nin plasmamobilerc.\n\nUse the setting in the Shift snap assist effect eligibility logic\nand add a Convergence KCM switch to control it.\n\nKeep the switch disabled when convergence is off, gaming mode is on,\nor dynamic tiling is enabled so window-placement ownership stays\nconsistent.
Move maximize-hover handling into the snap-assist effect so it can use
the actual decoration button geometry. Render the scene below the picker,
anchor layouts near the cursor, and preview the selected zone without a
fullscreen modal surface.
A normal maximize click keeps priority: hover activation requires a
deliberate pause, dismissal starts a short cooldown, and clicks on the
maximize button still toggle maximize while closing the suggestion.
Declarative SceneEffect that shows a floating panel of layout
presets (halves, thirds, quadrants). Activated via Meta+Shift+S or
by the shift-tiling script when the cursor hovers the title-bar
controls of the active window for 500 ms.
Clicking a preset assigns the active window to the chosen zone with
the same outer gap used by the BSP engine; remaining zones are shown
as snap-assist drop targets for recently-used windows.
