test(gateway): freeze v8 qualification harness

openspec/changes/truthful-fixed-frame-qualification/design.md

@@ -4,7 +4,11 @@ The current harness sends one fixed 1,179-byte payload per logical sample. It re
 
 The complete-frame fixture also must preserve the pinned Apollo source schedule. For each frame it derives packets per millisecond from the raw UDP block size at 80% of 1 Gbps, limits source batches to both 64 KiB and 64 packets, and carries the next-send time into the following frame. Waiting is context-cancellable. This is qualification-fixture behavior only; production transport and queue behavior remain unchanged.
 
-Because the bounded fixture uses loopback rather than a physical 1 Gbps link, each batch begins at its cumulative wire-rate offset. This preserves Apollo's raw-block rate and batch ceilings without collapsing multiple batches into an instantaneous loopback burst.
+Because the bounded fixture uses loopback rather than a physical 1 Gbps link, v8 writes the first shard of a batch successfully, captures that actual monotonic emission start, and schedules the next batch no earlier than that start plus the current batch's raw-block serialization interval. The persistent schedule carries across frames. A delayed batch therefore remains late instead of collapsing overdue batches into a catch-up burst.
+
+The retained v6 qualification run passed its then-current checks but is superseded because its tight-loop sender contradicted the pinned Apollo schedule. Private Linux runs 123 and 124 remain failed evidence. One local v8 sustained run passed on Darwin, but it is neither Linux proof nor normative Section 7 evidence.
+
+The later Darwin non-sustained pre-CI invocation was not green and was not retried. Its 1440p120 profile delivered the exact 6,250,000 bytes in 120 frames plus all 6,483 source and warm-up shards with zero drops, but measured 46,973.13 kbps over an implied approximately 1.0644383 seconds and failed the 5% throughput gate. Private Linux full verification/artifact retention and the replacement v8 normative run remain open.
 
 ## Goals / Non-Goals