merge lang/foundations into lang/native-jolt (seeds regenerated)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/ludic.render3d/env.ludic

@@ -188,6 +188,10 @@ export state Render3dState {
   gvk_al_spare: []int = null        # ids to reuse
   gvk_pool: long = 0
   gvk_fence: bytes = null
+  gvk_frame_fence: bytes = null     # the presented frame still on the GPU (one frame in flight)
+  gvk_frame_pending: bool = false
+  gvk_frame_pending_cb: pointer = null
+  gvk_inflight: int = -1            # -1 until asked: 1 leaves the presented frame in flight
   gvk_has_hqr: bool = false
   gvk_ts_period: float = 0.0             # float bits: nanoseconds per timestamp tick
   gvk_qpool: long = 0