Complete v4.5.0: Run Sweep intent, detail deep link, and portfolio widget

Finishes the v4.5.0 "Home Screen & Shortcuts reach" scope that the tag shipped
partially:

- Add RunSweepIntent (opens the app and runs refreshAllTrackedDomains via the
  in-process router) and expose it in DomainDigShortcuts.
- Extend the domaindig:// scheme with `sweep` and `domain` (detail) actions;
  route .detail to present TrackedDomainDetailView and .sweep to refresh the
  watchlist. Move DomainDigDeepLink into Shared/ so the widget can build links.
- Add a WidgetKit extension (DomainDigWidgetExtension) with small/medium/large
  Portfolio widgets showing health counts, per-domain status, and certificate
  countdowns; tapping a domain deep-links into its detail.
- Share portfolio state via an App Group (group.net.cleberg.DomainDig): the app
  writes a DomainDigWidgetData snapshot on launch/foreground and on watchlist
  changes and reloads timelines; the widget reads the same store.

1 files changed, 1 insertions, 0 deletions

diff --git a/DomainDig/DomainViewModel.swift b/DomainDig/DomainViewModel.swift
index f0c4411..3f37cb9 100644
--- a/DomainDig/DomainViewModel.swift
+++ b/DomainDig/DomainViewModel.swift
@@ -2582,6 +2582,7 @@ final class DomainViewModel {
         DomainDataPortabilityService.saveTrackedDomains(trackedDomains)
         CloudSyncService.shared.scheduleSyncIfNeeded()
         refreshDataLifecycleSummary()
+        refreshWidgetData()
     }
 
     private func beginBulkPersistenceDeferral() {