Stabilize diagnostic export and preserve authorized policy continuity

docs/native-transport-observability.md

@@ -61,9 +61,11 @@ hashes and `artifacts/cdp-webtransport-native-proof.json`. The latter additional
 checks real DevTools coexistence and verifies that observer disposal preserves
 clipboard ownership. Earlier literal/restart and real local Gemma regressions
 passed on the same source hashes. The later final-source literal/restart test
-also passes; the later semantic DLP checks pass but its debug acceptance records
-three export timeouts and one concurrency rejection. Those failures remain
-open and are separate from receiver containment. These scenarios do not prove every worker, iframe,
+also passes. Historical semantic debug runs recorded three export timeouts and
+one concurrency rejection. The latest semantic and audited transport runs now
+pass with zero lifetime failures after bounded exports and policy continuity;
+see [diagnostics evidence](diagnostics-backpressure.md). Historical failures
+remain retained without retrospective causal claims. These scenarios do not prove every worker, iframe,
 shared-worker attribution or future Chromium transport implementation.
 
 ## Measured limits