feat(primitives): media-editor components, category reorg, perf + type cleanup

Reorganize components into category folders (forms/canvas/overlays/etc.); add the
media-editor headless family (timeline, curve-editor, waveform, crop, color
picker, etc.); apply perf fixes (O(1) collection lookups, plain-object drag
state, gesture-leak teardown, shallowRef color state, rect caching) and replace
source `any` with proper types.

vue/primitives/src/menus/navigation-menu/context.ts

@@ -0,0 +1,65 @@
+import type { ComputedRef, Ref, ShallowRef } from 'vue';
+import type { Direction } from '../../utilities/config-provider';
+import type { Orientation } from '../../utilities/roving-focus';
+
+import { useContextFactory } from '@robonen/vue';
+
+/**
+ * Context shared by `NavigationMenuRoot` and `NavigationMenuSub`. Children
+ * (item / list / trigger / content / viewport / indicator) read from this
+ * single context regardless of whether they are inside a root or a submenu.
+ */
+export interface NavigationMenuContext {
+  isRootMenu: boolean;
+  modelValue: Ref<string>;
+  previousValue: Ref<string>;
+  baseId: ComputedRef<string> | Ref<string>;
+  dir: Ref<Direction>;
+  orientation: Orientation;
+  disableClickTrigger: Ref<boolean>;
+  disableHoverTrigger: Ref<boolean>;
+  disablePointerLeaveClose: Ref<boolean>;
+  unmountOnHide: Ref<boolean>;
+
+  rootNavigationMenu: ShallowRef<HTMLElement | undefined>;
+  activeTrigger: ShallowRef<HTMLElement | undefined>;
+  onActiveTriggerChange: (el: HTMLElement | undefined) => void;
+
+  indicatorTrack: ShallowRef<HTMLElement | undefined>;
+  onIndicatorTrackChange: (el: HTMLElement | undefined) => void;
+
+  viewport: ShallowRef<HTMLElement | undefined>;
+  onViewportChange: (el: HTMLElement | undefined) => void;
+
+  onTriggerEnter: (itemValue: string) => void;
+  onTriggerLeave: () => void;
+  onContentEnter: (itemValue: string) => void;
+  onContentLeave: () => void;
+  onItemSelect: (itemValue: string) => void;
+  onItemDismiss: () => void;
+}
+
+export interface NavigationMenuItemContext {
+  value: string;
+  contentId: string;
+  triggerId: string;
+  triggerRef: ShallowRef<HTMLElement | undefined>;
+  onTriggerChange: (el: HTMLElement | undefined) => void;
+  focusProxyRef: ShallowRef<HTMLElement | undefined>;
+  onFocusProxyChange: (el: HTMLElement | undefined) => void;
+  wasEscapeCloseRef: Ref<boolean>;
+  onEntryKeyDown: () => void;
+  onFocusProxyEnter: (side: 'start' | 'end') => void;
+  onContentFocusOutside: () => void;
+  onRootContentClose: () => void;
+}
+
+export const {
+  inject: useNavigationMenuContext,
+  provide: provideNavigationMenuContext,
+} = useContextFactory<NavigationMenuContext>('NavigationMenu');
+
+export const {
+  inject: useNavigationMenuItemContext,
+  provide: provideNavigationMenuItemContext,
+} = useContextFactory<NavigationMenuItemContext>('NavigationMenuItem');