feat(apple): default-UI connect/wake modal, auto-wake toggle, pixel-exact windowed streaming

Three client-UX changes that share the connect/present path (and settings files):

- Connect/wake overlay is now mode-aware: the console/gamepad UI keeps the
  full-screen aurora takeover, while the default (touch/desktop) UI shows a
  Liquid Glass modal over the host grid — the takeover looked out of place there.
- Add an auto-wake toggle (DefaultsKey.autoWake, default on) across macOS/iOS/tvOS
  Settings + the gamepad settings view; gate startSession/prepareWake and the
  gamepad "Wake & Connect" label on it. MAC-address learning stays always-on.
- Windowed sessions now stream at the window's native pixels (Match-window
  default-on) so the picture is 1:1 pixel-exact instead of the presenter
  resampling a fixed-mode frame; fullscreen reports full-display px, also 1:1.
  Also lands the mid-resize aspect-fit tracking (decoded contentSize) that keeps
  the picture undistorted after a resize.

swift build + swift test (121 tests) green; screenshot scenes verified.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

clients/apple/Sources/PunktfunkKit/Support/DefaultsKeys.swift

@@ -97,6 +97,12 @@ public enum DefaultsKey {
     /// layout (the console launcher, gamepad-navigable settings, a coverflow-style library)
     /// whenever a gamepad is connected. On by default; see `GamepadUIEnvironment.isActive`.
     public static let gamepadUIEnabled = "punktfunk.gamepadUIEnabled"
+    /// Auto-wake on connect: when connecting to a saved host that isn't advertising on mDNS, fire
+    /// Wake-on-LAN and, if the dial fails, wait for it to come back before retrying (the "Waking…"
+    /// overlay). On by default. Turn off if a host that's already on just isn't seen on mDNS (a
+    /// routed/VPN host), so connects go straight through instead of waiting out the wake timeout.
+    /// The explicit "Wake Host" action stays available regardless. Read by ContentView.startSession.
+    public static let autoWake = "punktfunk.autoWake"
 }
 
 extension Notification.Name {