refactor: parallelize bootstrap and simplify lifecycle with VueUse (#8307)

## Summary

Refactors bootstrap and lifecycle management to parallelize
initialization, use Vue best practices, and fix a logout state bug.

## Changes

### Bootstrap Store (`bootstrapStore.ts`)
- Extract early bootstrap logic into a dedicated store using
`useAsyncState`
- Parallelize settings, i18n, and workflow sync loading (previously
sequential)
- Handle multi-user login scenarios by deferring settings/workflows
until authenticated

### GraphCanvas Refactoring
- Move non-DOM composables (`useGlobalLitegraph`, `useCopy`, `usePaste`,
etc.) to script setup level for earlier initialization
- Move `watch` and `whenever` declarations outside `onMounted` (Vue best
practice)
- Use `until()` from VueUse to await bootstrap store readiness instead
of direct async calls

### GraphView Simplification
- Replace manual `addEventListener`/`removeEventListener` with
`useEventListener`
- Replace `setInterval` with `useIntervalFn` for automatic cleanup
- Move core command registration to script setup level

### Bug Fix
Using `router.push()` for logout caused `isSettingsReady` to persist as
`true`, making new users inherit the previous user's cached settings.
Reverted to `window.location.reload()` with TODOs for future store reset
implementation.

## Testing

- Verified login/logout cycle clears settings correctly
- Verified bootstrap sequence completes without errors

---------

Co-authored-by: Amp <amp@ampcode.com>

src/App.vue

@@ -10,7 +10,6 @@
 
 <script setup lang="ts">
 import { captureException } from '@sentry/vue'
-import { useEventListener } from '@vueuse/core'
 import BlockUI from 'primevue/blockui'
 import ProgressSpinner from 'primevue/progressspinner'
 import { computed, onMounted } from 'vue'
@@ -21,15 +20,13 @@ import { useWorkspaceStore } from '@/stores/workspaceStore'
 import { useConflictDetection } from '@/workbench/extensions/manager/composables/useConflictDetection'
 
 import { electronAPI, isElectron } from './utils/envUtil'
+import { app } from '@/scripts/app'
 
 const workspaceStore = useWorkspaceStore()
+app.extensionManager = useWorkspaceStore()
+
 const conflictDetection = useConflictDetection()
 const isLoading = computed<boolean>(() => workspaceStore.spinner)
-const handleKey = (e: KeyboardEvent) => {
-  workspaceStore.shiftDown = e.shiftKey
-}
-useEventListener(window, 'keydown', handleKey)
-useEventListener(window, 'keyup', handleKey)
 
 const showContextMenu = (event: MouseEvent) => {
   const { target } = event