📱 v0.10.0 — Mobile Navigation, Responsive Audit, and Lookbook Engine

What Was Added

• MobileNavComponent — Fixed-bottom mobile navigation bar for touch interfaces. Accepts multiple items and an optional center_item (FAB). Automatically hides at viewports ≥ 700 px. Respects env(safe-area-inset-bottom) for notched devices.

• FAB variant on ButtonComponent — variant: :fab renders a circular raised button for primary mobile actions.

• Navigation pattern previews — fab_nav and mobile_nav patterns added to the Patterns category in Lookbook.

• Midwest::Demo::Engine — Lookbook is now packaged as a proper mountable Rails::Engine. Mount a single engine to get the full component browser, panels, and demo controllers.

• Lookbook custom panels — accessibility, assets, figma, and page_theme panels ship directly from the gem and appear in the Lookbook inspector drawer for every preview.

What Changed

• DropdownComponent — Nested keyboard navigation fixed; mobile keydown handler guards navigation keys and calls stopPropagation.

• PopoverComponent — CSS updated for mobile-safe positioning and sheet-style presentation on small viewports.

• ButtonComponent — Dedicated button_component.css; touch-target improvements for small sizes.

• BannerComponent — Removed min-width: 30rem from .wrap (caused horizontal overflow on narrow viewports).

• COMPONENT_AUDIT.md — Full mobile/responsive audit covering touch target sizes (WCAG 2.5.5), iOS auto-zoom thresholds, and breakpoint behavior across 26 components.

• Demo app simplified — Manual Lookbook wiring removed from demo/config/; handled by the engine.

What Was Removed

• Standalone demo controller boilerplate consolidated into the engine.

Dev Process

• Midwest::Demo::Engine is now the canonical way to mount the component browser. bin/rails midwest:lookbook:install sets it up in one step.
• Lookbook panel templates now live inside the gem; host apps no longer need to vendor them.