docs(acceptance): verify B04 native frames and record probe timeout

docs/协作/evidence/B04-review-01/dom-lifecycle.txt

@@ -0,0 +1,5 @@
+
+> ycode@0.0.7 test:image-lifecycle
+> node scripts/test-image-lifecycle.mjs
+
+{"result":"PASS","checks":159,"samples":85,"output":"C:\\Users\\Administrator\\.codex\\worktrees\\b04-accept-01\\YCode\\.tmp\\b04-image-aFmn4p","limits":"DOM lifecycle only; jsdom heights are not layout acceptance. Synthetic data only."}