Disown AppKit window restoration — launches present welcome again instead of a windowless shell

macOS keeps Saved Application State per app, and on macOS 26 its mere
existence — even describing zero windows, which repeated dev kills
guarantee — counts as "a restored session": SwiftUI then treats every
scene's defaultLaunchBehavior as moot and presents nothing. The app
launched as a windowless shell with no way back, since windowOpener is
captured by the first scene that appears — so Open Recent, the
re-grant Grant click, and Dock reopen all silently buffered or
no-opped. Proven by -ApplePersistenceIgnoreState YES presenting
correctly on the same state; with the fix, welcome presented 3/3
consecutive plain launches.

Three changes:
- App.init registers ApplePersistenceIgnoreState — restoration is the
  registry's job (02 § Launch and window lifecycle), every scene
  already declares restorationBehavior(.disabled), and AppKit's layer
  was pure liability. Registered before NSApplicationMain runs, which
  is what makes a registration-domain default early enough.
- The restore bootstrap presents at every launch as the app's one
  reliable presenter; welcome is never system-presented (.suppressed)
  — the pass opens it when nothing else lands on screen.
  LaunchPlan.presentsBootstrap retired.
- captureWindowActions returns the replayed Finder-open count so the
  pass counts those as opens — a cold document launch doesn't get
  welcome stacked beside its board.

Both suites green, verify-editions 30/30.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

Kanban/App/UITestLaunch.swift

@@ -42,12 +42,6 @@ enum LaunchPlan: Equatable, Sendable {
         ) ? .restoreBoards : .welcome
     }
 
-    /// Whether the throwaway bootstrap window is presented at launch — everything except the plain
-    /// welcome case, since both other plans have to open windows and only a view can do that
-    /// (`RestoreBootstrapView`'s own reason for wearing a window).
-    var presentsBootstrap: Bool {
-        self != .welcome
-    }
 }
 
 // MARK: - UITestLaunch