feat(pre-push-safety-net): exclude vendor inputs and partition frontend coverage

.kiro/specs/pre-push-safety-net/spec.json

@@ -1,7 +1,7 @@
 {
   "feature_name": "pre-push-safety-net",
   "created_at": "2026-09-12T15:35:00Z",
-  "updated_at": "2026-09-13T09:17:01.788332+00:00",
+  "updated_at": "2026-09-13T09:50:01.821464+00:00",
   "language": "en",
   "phase": "implementation",
   "approvals": {
@@ -19,7 +19,7 @@
     }
   },
   "ready_for_implementation": true,
-  "implementation_approval_note": "Groups 1 and 2 verified complete. Maintainer authorized continuing group 3; remaining approved tasks execute in dependency order with independent review and fresh verification.",
+  "implementation_approval_note": "Groups 1\u20133 verified complete. Contributor-scan frontend-retention prerequisite 2.18 approved and verified. Remaining approved tasks require independent review and fresh verification.",
   "depends_on": [
     "contributor-scan"
   ],
@@ -77,23 +77,17 @@
       "2.3",
       "3.1",
       "3.2",
-      "3.3"
+      "3.3",
+      "3.4"
     ],
-    "remaining_tasks": 17,
+    "remaining_tasks": 16,
     "verification_record": "implementation-group-3.md",
     "verification_records": [
       "implementation-group-1.md",
       "implementation-group-2.md",
       "implementation-group-3.md"
     ],
-    "next_group": 3,
-    "blocked_tasks": [
-      {
-        "task": "3.4",
-        "reason": "Pinned JavaScript frontend silently excludes first-party tests; missing contributor-scan prerequisite.",
-        "record": "../contributor-scan/frontend-retention-prerequisite.md",
-        "next_action": "implement_approved_contributor_scan_2.18"
-      }
-    ]
+    "next_group": 4,
+    "blocked_tasks": []
   }
 }