## resizable (`poetry_resizable`)

Panels with draggable handles for resizing adjacent regions.

Class: Poetry::Ui::Resizable::Component - BEM block `poetry-ui-resizable`.
Slot REQUIRED: with_panel (at least two panels) - a call without it raises.
- `direction:` (symbol) - one of horizontal|vertical, default "horizontal" - The group axis: :horizontal lays panels side by side, :vertical stacks them.
- `grip:` (boolean) - default false - Renders the grip dots on each handle.
Slots: panels (One panel per call: default_size/min_size/max_size are percentages of the group; the content block is required.; many; with_panel yields NOTHING to the block - no |param|, write content directly; with_panel keywords: default_size:, min_size:, max_size:, classes: ONLY; with_panel REQUIRES a content block (the panel content)).
- PART `resizable-panel-group` - The flex group root - the splitter controller rides here | states: data-orientation=horizontal|vertical (the group axis)
- PART `resizable-panel` - One flex child whose flex-grow IS its percentage - the controller rewrites the inline flex on every resize | states: data-min-size (the panel's minimum percentage, rendered when with_panel passes min_size: (the controller's clamp floor)); data-max-size (the panel's maximum percentage, rendered when with_panel passes max_size: (the controller's clamp ceiling))
- PART `resizable-handle` - The role=separator splitter between panels - drag and keyboard resizing live here; its aria-valuenow tracks the preceding panel
- WIRING root: `poetry--core--resizable` registers; values orientation
- WIRING handle: `poetry--core--resizable` actions dragStart on pointerdown, dragMove on pointermove, dragEnd on pointerup, keydown on keydown
- RULE: Declare panels with with_panel(default_size:, min_size:, max_size:) - sizes are PERCENTAGES and the component interleaves the separator handles.
- RULE: direction: :horizontal is side-by-side (the default); :vertical stacks.
- RULE: Handles are keyboard splitters (arrows step, Home/End jump) - never replace them with styled divs.
- RULE: Nest a group inside a panel for two-axis layouts - groups self-scope.