migration: prove standalone maintenance and correct visual evidence

docs/migration/evidence/slice-10/browser-acceptance.json

@@ -1,7 +1,7 @@
 {
   "schema_version": 1,
   "tested_at": "2026-07-31T12:00:00+08:00",
-  "result": "passed",
+  "result": "passed_with_documented_evidence_gap",
   "environments": {
     "original": "temporary_original_runtime",
     "migrated": "temporary_app_runtime",
@@ -15,7 +15,6 @@
       "theme": "light",
       "views": [
         "sentiment",
-        "auction",
         "screener",
         "heaven_trend",
         "heaven_fortune",
@@ -44,6 +43,14 @@
       "equal": true
     }
   ],
+  "invalid_captures": [
+    {
+      "view": "auction",
+      "file": "frontend-migrated-auction-light-1920x1080.INVALID-login-session.png",
+      "reason": "The migrated capture shows an expired login session and is not visual-equivalence evidence.",
+      "replacement_claim": "No replacement screenshot claim; final visual acceptance remains manual."
+    }
+  ],
   "heaven_animation_contract": {
     "trend_star_nodes": 90,
     "fortune_star_nodes": 100,
@@ -89,5 +96,6 @@
   },
   "screenshot_policy": "Dynamic animation frames, focus outlines, and live status text may change pixel hashes. Acceptance compares visible geometry, computed styles, DOM state, animation names, interaction results, and overflow behavior.",
   "known_test_environment_constraint": "Original and migrated services on the same hostname share cookies across ports. Each service must be logged in separately immediately before comparison.",
-  "all_equal": true
+  "all_equal": true,
+  "manual_acceptance_required": true
 }