WEDGE-PROGRESSION: deadline-fire + nt_create_event polarity

Two surgical fixes from 2026-05-28 that take VdSwap from 1 (stuck since
AUDIT-049 on 10 May) to 6 — first real gameplay-direction rendering
progression. Boot now reaches host_ns=208s (was 51s post-2.V, 767ms
pre-2.V).

2.AF (xenia-app/main.rs:2475, +18 LOC):
  Per-round drain of Scheduler::timed_waits in coord_pre_round, right
  after fire_due_timers. advance_to_next_wake_if_due was only called
  from coord_idle_advance (zero-threads-runnable path), so under load
  expired wait-deadlines never fired. tid=5's 42.95ms deadline sat
  unfired 29s+ in 2.V trace. Post-fix: tid=5 Blocked->Ready, events
  13M->45M (3.5x), boot reaches 152s.

2.AI (xenia-kernel/exports.rs:3043, +16 LOC):
  Fix manual_reset polarity inversion in nt_create_event:
    -let manual_reset = ctx.gpr[5] != 0;
    +let manual_reset = ctx.gpr[5] == 0;
  Canary reference: xenia-canary xboxkrnl_threading.cc:620
    ev->Initialize(!event_type, !!initial_state)
  manual_reset = !event_type, so event_type=0 (NotificationEvent) ->
  manual, event_type=1 (SynchronizationEvent) -> auto. Our Ke-path
  (ensure_dispatcher_object) was already correct; Nt-path was inverted.
  Sylpheed's frame-sync Event (event_type=1 + initial_state=1) was
  mis-classified manual-reset+signaled, staying signaled forever ->
  tid=1 main loop spun at 23kHz (2,798x canary's 60Hz). Post-fix:
  tid=1 NtWait calls 3,233,583->51 (63,400x drop), VdSwap 2->6 (3x
  rendering progression), boot reaches 208s.

Tests: 300 xenia-cpu / 227 xenia-kernel / 5 xenia-app / 19 xenia-path
+ ~30 smaller - all PASS, 0 regressions. Determinism preserved:
2x cold runs bit-identical at 65,691,821 events.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/xenia-app/src/main.rs

@@ -2473,6 +2473,24 @@ fn coord_pre_round(
     }
 
     kernel.fire_due_timers();
+    // 2.AF — fire expired wait-deadlines under load. Without this call
+    // `advance_to_next_wake_if_due` only runs in `coord_idle_advance`
+    // (no Ready threads), so a thread whose `KeWait*` deadline expires
+    // while other threads keep the scheduler busy sits Blocked forever
+    // (2.AD: tid=5's 42.95ms deadline expired by ~22s but never fired
+    // for 29s+). Drain every entry whose deadline `<=` the current
+    // guest timebase (the same `now` `fire_due_timers` uses, so the
+    // two stay in lock-step) and let `handle_timeout_wake` stamp
+    // `STATUS_TIMEOUT` and scrub the waiter from each handle.
+    // Deterministic: `Scheduler::ctx(0).timebase` is the guest-cycle
+    // timebase, not host_ns.
+    loop {
+        let now = kernel.scheduler.ctx(0).timebase;
+        let Some((r, reason)) = kernel.scheduler.advance_to_next_wake_if_due(now) else {
+            break;
+        };
+        kernel.handle_timeout_wake(r, reason);
+    }
     try_inject_graphics_interrupt(kernel);
     if kernel.xaudio_tick_enabled {
         try_inject_audio_callback(kernel);

crates/xenia-kernel/src/exports.rs

@@ -3038,9 +3038,23 @@ pub(crate) fn close_handle_internal(state: &mut KernelState, handle: u32) {
 }
 
 fn nt_create_event(ctx: &mut PpcContext, mem: &GuestMemory, state: &mut KernelState) {
-    // r3 = handle_ptr, r4 = obj_attrs, r5 = event_type, r6 = initial_state
+    // r3 = handle_ptr, r4 = obj_attrs, r5 = event_type, r6 = initial_state.
+    //
+    // 2.AI — Xenon DISPATCHER_HEADER `Type` (NT convention):
+    //     0 = NotificationEvent   (manual-reset)
+    //     1 = SynchronizationEvent (auto-reset)
+    // Canary mirrors this at `xboxkrnl_threading.cc:620`
+    // (`ev->Initialize(!event_type, !!initial_state)`) and our own
+    // `ensure_dispatcher_object` (above, type=0→manual, type=1→auto).
+    //
+    // The prior polarity here was inverted (`event_type != 0` → manual),
+    // which silently mis-classified Sylpheed's per-frame VSync gate as
+    // manual-reset+initial-signaled. `handle_consume` is a no-op for
+    // manual-reset events, so the wait fast-path returned SUCCESS every
+    // call (1.05 M iterations on the wedge handle 0x10e8 in 2.AF, zero
+    // signal.match) instead of blocking ~17 ms for the next VSync.
     let handle_ptr = ctx.gpr[3] as u32;
-    let manual_reset = ctx.gpr[5] != 0;
+    let manual_reset = ctx.gpr[5] == 0;
     let signaled = ctx.gpr[6] != 0;
     let handle = state.alloc_handle_for(KernelObject::Event {
         manual_reset,