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/composables/useCoreCommands.test.ts

@@ -167,25 +167,30 @@ describe('useCoreCommands', () => {
     return {
       get: vi.fn().mockReturnValue(getReturnValue),
       addSetting: vi.fn(),
-      loadSettingValues: vi.fn(),
+      load: vi.fn(),
       set: vi.fn(),
       exists: vi.fn(),
       getDefaultValue: vi.fn(),
+      isReady: true,
+      isLoading: false,
+      error: undefined,
       settingValues: {},
       settingsById: {},
       $id: 'setting',
       $state: {
         settingValues: {},
-        settingsById: {}
+        settingsById: {},
+        isReady: true,
+        isLoading: false,
+        error: undefined
       },
       $patch: vi.fn(),
       $reset: vi.fn(),
       $subscribe: vi.fn(),
       $onAction: vi.fn(),
       $dispose: vi.fn(),
-      _customProperties: new Set(),
-      _p: {}
-    } as ReturnType<typeof useSettingStore>
+      _customProperties: new Set()
+    } satisfies ReturnType<typeof useSettingStore>
   }
 
   beforeEach(() => {