feat(gui-v2): drawer registry + port RightDrawer to TypeScript

Adds composables/drawerRegistry.ts (boundary-safe register-by-call map:
register/resolve, zero static component imports — composables zone may
not import components, RFC-WS-GUI-REDESIGN AD-G5). Extends useRightDrawer
with resolveDrawerComponent (thin facade, prior API/tests preserved).
RightDrawer.vue: PrimeVue <Drawer position=right>, v-model:visible via a
writable computed ↔ useRightDrawer isOpen/close; title/flush read from the
open() props object (A4); dynamic <component :is> via resolveDrawerComponent
with a graceful empty state on null; #actions header slot retained. 18
unit/component tests.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/app/src/composables/useRightDrawer.ts

@@ -1,6 +1,7 @@
 import { storeToRefs } from 'pinia'
-import type { ComputedRef } from 'vue'
+import type { Component, ComputedRef } from 'vue'
 import { computed } from 'vue'
+import { resolveDrawerComponent } from '@/composables/drawerRegistry'
 import { useShellUiStore } from '@/stores/useShellUiStore'
 
 // Thin facade over useShellUiStore.drawer (RFC-WS-GUI-REDESIGN AD-G4,
@@ -14,6 +15,7 @@ export interface UseRightDrawer {
   props: ComputedRef<Record<string, unknown>>
   open: (component: string, props?: Record<string, unknown>) => void
   close: () => void
+  resolveDrawerComponent: (name: string | null | undefined) => Component | null
 }
 
 export function useRightDrawer(): UseRightDrawer {
@@ -26,5 +28,6 @@ export function useRightDrawer(): UseRightDrawer {
     props: computed(() => drawer.value.props),
     open: (component, props = {}) => store.openDrawer(component, props),
     close: () => store.closeDrawer(),
+    resolveDrawerComponent,
   }
 }