Reload inbox after merge + pull-to-refresh on PR content; bump to 3.4

- After a merge, the app returns to the landing page but the inbox kept stale
  PRs. Add an inboxNeedsRefresh flag set on merge success; InboxView reloads
  on next appearance when it's set.
- The PR content (incl. the Checks/workflow tab) is now pull-to-refreshable
  via .refreshable on the content ScrollView, so workflow status can be
  updated by pulling down. Bump to 3.4.

GiteaPR/Views/InboxView.swift

@@ -60,6 +60,14 @@ struct InboxView: View {
                 didInitialLoad = true
                 await vm.load()
             }
+            .onAppear {
+                // After a merge, the inbox must reload so the just-merged PR
+                // doesn't linger as stale in the list.
+                if SettingsStore.shared.inboxNeedsRefresh {
+                    SettingsStore.shared.inboxNeedsRefresh = false
+                    Task { await vm.load() }
+                }
+            }
             .alert("Error", isPresented: .init(
                 get: { vm.errorMessage != nil },
                 set: { if !$0 { vm.errorMessage = nil } })) {