docs(auth): retain Task 15 round four evidence

.artifacts/task-15/automated-gates.json

@@ -5,7 +5,8 @@
     "authentication_round1": "2b618c5a0f6f07045700cfe7146ca517fb5f78ab",
     "fix_round2": "fe190e7046acc173f510dddcb32f46ed142858c1",
     "maintenance_profile_follow_up": "4d230b87afdcd24f02264f8f937c8628b92db05a",
-    "fix_round3_and_final_docker": "e20bf33e2a00102192e5be66b178037aeca3a7b1"
+    "fix_round3_and_final_docker": "e20bf33e2a00102192e5be66b178037aeca3a7b1",
+    "fix_round4_streamed_archive_privacy": "54698e73400a54ce7c3e6c10099e14eb471ce8b9"
   },
   "versions": {
     "node_contract": "v24.16.0",
@@ -22,10 +23,10 @@
     },
     "unified_docker_smoke": {
       "status": "PASS",
-      "source_commit": "e20bf33e2a00102192e5be66b178037aeca3a7b1",
-      "run_id": "20260818054002-16619-2452",
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9",
+      "run_id": "20260818061612-31842-22636",
       "manifest": ".artifacts/task-15/unified-docker-images.json",
-      "manifest_sha256": "835790fbff5980c494c32f4473b46675ce7d568e7e6e39e30000ff0400b4dbb7",
+      "manifest_sha256": "d6845cb3436872ee6a722916f3aa2ad058c5fd66c61333ccad18c0302933361e",
       "images": 5,
       "cleanup": "PASS"
     }
@@ -37,7 +38,8 @@
     },
     "platform_private_restore_staging": {
       "status": "PASS",
-      "evidence": "unix_behavior_test_and_windows_static_cross_compile"
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9",
+      "evidence": "safeio_streamed_archive_unix_test_and_windows_static_cross_compile"
     },
     "provider_fixture": {
       "status": "PASS",
@@ -59,15 +61,19 @@
       "playwright": 8,
       "files": 2,
       "node": "v24.16.0",
-      "sentinel_leak_scan": "PASS"
+      "sentinel_leak_scan": "PASS",
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9"
     },
     "go_race_build": {
       "status": "PASS",
-      "packages": 18
+      "packages": 18,
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9"
     },
     "windows_cross_compile": {
       "status": "PASS",
-      "packages": 18
+      "packages": 18,
+      "execution": "cross_compile_only_not_native_execution",
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9"
     },
     "shell_and_compose_contracts": {
       "status": "PASS",
@@ -77,11 +83,13 @@
         "default_compose",
         "unified_compose",
         "compose_secret_policy"
-      ]
+      ],
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9"
     },
     "unified_docker_smoke": {
       "status": "PASS",
-      "run_id": "20260818054002-16619-2452",
+      "source_commit": "54698e73400a54ce7c3e6c10099e14eb471ce8b9",
+      "run_id": "20260818061612-31842-22636",
       "images": 5,
       "cleanup": "PASS"
     },