refactor(gui): ♻️ consolidate backup/restore notifications

[Copilot]

Backup/restore operations spawn multiple overlapping notifications (info hint + success + cloud sync status), cluttering the top-right corner and blocking UI elements.

Changes

• Remove standalone wait_for_prompt_hint info notification from backup, restore, and extra-backup-restore flows (3 call sites). The "please wait" hint is now shown as a subtitle in the loading overlay, where it belongs—since the overlay already blocks interaction.

• Extend useGlobalLoading with an optional detail parameter on withLoading(op, message, detail). App.vue renders it as a secondary text line in the loading card.

• New useIpcNotificationCollector composable — allows temporarily collecting backend IPC notifications (restore skip/warning events) instead of displaying each as a separate popup. App.vue's listener checks addIfCollecting() first.

• Consolidated restore result — apply_save() wraps the restore in startCollecting()/stopCollecting(). Warnings are rolled into a single success notification: "恢复成功（恢复过程中有 2 条警告）" via new recover_success_with_warnings i18n key (en_US + zh_SIMPLIFIED).

Before → After

Before	After
1 info notification + 1 success notification + N warning popups per operation	Loading overlay with hint subtitle → 1 result notification

// Before: 2+ notifications per backup
showInfo({ message: $t('manage.wait_for_prompt_hint') });
await withLoading(async () => { /* ... */ showSuccess(...) }, $t('manage.creating_backup'));

// After: hint integrated into loading overlay, single result notification
await withLoading(
  async () => { /* ... */ showSuccess(...) },
  $t('manage.creating_backup'),
  $t('manage.wait_for_prompt_hint'),
);

[Copilot]

Pull request overview

This PR consolidates backup/restore/cloud-sync user notifications into a unified Activity Drawer, reducing overlapping popups and moving “please wait” messaging into the global loading overlay.

Changes:

• Replaces toast-based notifications with an activity-based notification system (useActivityCenter + ActivityDrawer).
• Extends global loading overlay messaging to support a secondary detail line (useGlobalLoading(detail)).
• Adds IPC notification collection during restore flows to consolidate warnings into a single result entry.

Reviewed changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
locales/zh_SIMPLIFIED.json	Adds recover_success_with_warnings and new activity_center.* strings.
locales/en_US.json	Adds recover_success_with_warnings and new activity_center.* strings.
apps/rgsm-gui/src/ui/layers.ts	Replaces old notification/cloud-sync layering with activityDrawer layer token.
apps/rgsm-gui/src/pages/index.vue	Switches “go backup” hint to activity-based info notification.
apps/rgsm-gui/src/pages/SyncSettings.vue	Migrates notifications from toasts to activity notifications.
apps/rgsm-gui/src/pages/Settings.vue	Migrates notifications from toasts to activity notifications across settings actions.
apps/rgsm-gui/src/pages/Management/[name].vue	Wraps backup/restore/verify flows with activity entries + IPC warning collection for restores.
apps/rgsm-gui/src/pages/AddGame.vue	Migrates add/import flow notifications to activity notifications.
apps/rgsm-gui/src/pages/About.vue	Migrates URL-open error feedback to activity notifications.
apps/rgsm-gui/src/composables/useNotification.ts	Removes the old Element Plus toast/queue notification system.
apps/rgsm-gui/src/composables/useIpcNotificationCollector.ts	Adds composable to collect IPC notifications during restore and consolidate results.
apps/rgsm-gui/src/composables/useGlobalLoading.ts	Adds detail support to loading stack and exposes loadingDetail.
apps/rgsm-gui/src/composables/useConfig.ts	Migrates config load/save error notification to activity system.
apps/rgsm-gui/src/composables/useCloudSyncStatus.ts	Migrates cloud-sync error/info messaging to activity system.
apps/rgsm-gui/src/composables/useActivityCenter.ts	Introduces the activity model/store + notify helpers (success/info/warn/error).
apps/rgsm-gui/src/components/SaveLocationDrawer.vue	Migrates drawer validation/errors to activity notifications.
apps/rgsm-gui/src/components/FavoriteSideBar.vue	Migrates favorite add/remove warnings and success messages to activity notifications.
apps/rgsm-gui/src/components/ExtraBackupDrawer.vue	Migrates extra-backup restore/delete feedback to activity + integrates loading detail hint.
apps/rgsm-gui/src/components/CloudSyncIndicator.vue	Removes the old cloud sync indicator widget in favor of the activity drawer.
apps/rgsm-gui/src/components/ActivityDrawer.vue	Adds unified activity drawer UI (cloud sync + activities) with copy/dismiss support.
apps/rgsm-gui/src/App.vue	Renders ActivityDrawer, routes backend IPC notifications into activity center, and shows loading detail line.

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[Copilot]

copyActivity() calls navigator.clipboard.writeText() without error handling. In environments where clipboard access is unavailable/denied, this will throw and can surface as an unhandled promise rejection from the click handler. Handle failures inside copyActivity (feature-detect navigator.clipboard, wrap in try/catch) and provide user feedback (e.g., add an error activity) instead of letting the exception bubble.

Suggested change

	await navigator.clipboard.writeText(text);
	copiedId.value = entry.id;
	setTimeout(() => {
	if (copiedId.value === entry.id) copiedId.value = null;
	}, 1500);
	if (
	typeof navigator === 'undefined' ||
	!navigator.clipboard ||
	typeof navigator.clipboard.writeText !== 'function'
	) {
	window.alert('Clipboard access is not available in this environment.');
	return;
	}
	try {
	await navigator.clipboard.writeText(text);
	copiedId.value = entry.id;
	setTimeout(() => {
	if (copiedId.value === entry.id) copiedId.value = null;
	}, 1500);
	} catch {
	window.alert('Failed to copy activity details to the clipboard.');
	}

[Copilot]

In the warnings-success path, the activity title is set to $t('manage.recover_success') while the description is set to $t('manage.recover_success_with_warnings', ...). Since recover_success_with_warnings already includes the full “Successfully restored …”/“恢复成功 …” text, the UI will show duplicated success wording on two lines. Consider either (a) making the title use recover_success_with_warnings and omitting the description, or (b) changing the i18n string to only describe the warnings portion so it works as a subtitle.

Suggested change

	title: $t('manage.recover_success'),
	description: $t('manage.recover_success_with_warnings', { count: warnings.length }),
	title: $t('manage.recover_success_with_warnings', { count: warnings.length }),