feat(notifications): add overlay notifications with position config

- Add Catppuccin Macchiato overlay notification stack with 3s transient timeout
- Add `notifications.overlayPosition` config (top-left | top | top-right)
- Route startup tokenization and subtitle annotation status through configured surfaces
- Deduplicate rapid subtitle mode toggle notifications
- Change `both` to mean overlay + system; add `osd-system` as legacy alias for old behavior
- Keep `osd`/`osd-system` as config-file-only legacy values; Settings UI offers overlay/system/both/none

src/main/runtime/anilist-setup-protocol-main-deps.ts

@@ -18,8 +18,10 @@ type RegisterSubminerProtocolClientMainDeps = Parameters<
 
 export function createBuildNotifyAnilistSetupMainDepsHandler(deps: NotifyAnilistSetupMainDeps) {
   return (): NotifyAnilistSetupMainDeps => ({
+    getNotificationType: () => deps.getNotificationType?.(),
     hasMpvClient: () => deps.hasMpvClient(),
     showMpvOsd: (message: string) => deps.showMpvOsd(message),
+    showOverlayNotification: (payload) => deps.showOverlayNotification?.(payload),
     showDesktopNotification: (title: string, options: { body: string }) =>
       deps.showDesktopNotification(title, options),
     logInfo: (message: string) => deps.logInfo(message),