feat(apple): the gamepad UI comes to tvOS - focus-driven, with real session controls

The console UI now runs on tvOS through the NATIVE focus engine: carousel
cards and settings rows are focusable Buttons (Siri Remote and pads both
navigate; imperative scrollTo replaces the drop-prone scrollPosition binding),
while iOS/macOS keep the 60 Hz poll untouched - on tvOS it carries only what
focus has no concept of: X/Y screen actions and left/right value adjust with
the poll's dominant-axis feel (onMoveCommand proved input-source-dependent:
keyboard intercepted, pad dpad not -> double steps). Text entry uses the
system fullscreen keyboard (TVTextEntry); pairing + library present as covers
under the launcher; the game library defaults ON; settings values slide a
quiet 14 pt in the step's direction.

Session controls: controller/remote input routes EXCLUSIVELY through
GameController during a stream (GCEventViewController, interaction disabled) -
a pad's B no longer doubles as a UIKit menu press that ended sessions
mid-game. Deliberate exits only: the cross-client escape chord (hold
L1+R1+Start+Select 1.5 s - pf-client-core's contract, now implemented on all
Apple platforms) and holding the remote's Back >= 1 s; the start-of-stream
banner (now also on tvOS) teaches both. The Siri Remote's touch surface
drives the host pointer - press = left click, Play/Pause = right click,
release-tail jumps gated so motion stays truly relative.

tvOS 26 regressions fixed at the root: the app-wide brand tint rendered every
unfocused control as a blank pill (tint dropped on tvOS) and the 17 pt root
font shrank the whole platform (29 pt there), plus 10-foot sizing across host
cards, the gamepad screens, and the stats HUD (whose misleading "Press Menu"
hint is gone). Acknowledgements scrolls by focus-sized chunks and Menu pops
instead of suspending; full-width focusSections make the home actions
reachable from any column. The presenter defaults to stage-3 glass pacing on
tvOS (a 60 Hz panel fed a 60 fps stream is the sticky-FIFO worst case behind
the 50 ms display stage) and is pickable from the gamepad settings; HDR
capability advertises from AVPlayer.eligibleForHDRPlayback instead of the
current mode's EDR headroom, so an SDR home screen no longer hides an HDR TV.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

clients/apple/Sources/PunktfunkKit/Gamepad/GamepadFeedback.swift

@@ -74,7 +74,11 @@ public final class GamepadFeedback {
         // session — a DualSense or a DualShock 4 (lightbar only). Block briefly on it there and
         // let rumble own the wait elsewhere; on an Xbox session it stays nonblocking.
         let thread = Thread { [connection, flag, drainDone, weak self] in
-            while !flag.isStopped {
+            // Per-iteration autorelease pool: no runloop on this thread, and the haptics/HID
+            // rendering below autoreleases ObjC temporaries. `false` = session over.
+            var alive = true
+            while alive, !flag.isStopped {
+                alive = autoreleasepool { () -> Bool in
                 do {
                     // Poll the feedback planes NON-BLOCKING. A blocking poll (timeoutMs > 0) holds
                     // the connection's shared feedback lock for its whole wait; the video pump drains
@@ -106,12 +110,14 @@ public final class GamepadFeedback {
                         self?.render(ev)
                         burst += 1
                     }
+                    return true
                 } catch {
-                    break // .closed (or fatal) — the session is over
+                    return false // .closed (or fatal) — the session is over
+                }
                 }
                 // ~8 ms poll cadence (≈125 Hz), slept OUTSIDE the feedback lock — low rumble/HID
                 // latency without holding the lock the HDR-meta drain needs.
-                if !flag.isStopped { Thread.sleep(forTimeInterval: 0.008) }
+                if alive, !flag.isStopped { Thread.sleep(forTimeInterval: 0.008) }
             }
             drainDone.signal()
         }