conductor(plan): update metadata.json to status=shipped + actual test counts

conductor/tracks/tier2_autonomous_sandbox_20260616/metadata.json

@@ -2,28 +2,29 @@
   "id": "tier2_autonomous_sandbox_20260616",
   "title": "Tier 2 Autonomous Sandbox (unattended track execution with bounded blast radius)",
   "type": "feature",
-  "status": "planned",
+  "status": "shipped",
   "priority": "high",
   "created": "2026-06-16",
+  "shipped": "2026-06-16",
   "owner": "tier2-tech-lead",
   "spec": "conductor/tracks/tier2_autonomous_sandbox_20260616/spec.md",
   "plan": "conductor/tracks/tier2_autonomous_sandbox_20260616/plan.md",
   "scope": {
-    "new_files": 21,
+    "new_files": 22,
     "modified_files": 1,
     "deleted_files": 0
   },
   "depends_on": [],
   "blocks": [],
   "test_summary": {
-    "default_on_tests": 24,
+    "default_on_tests": 31,
     "opt_in_tests_sandbox": 4,
     "opt_in_tests_smoke": 1
   },
   "verification_criteria": [
-    "All failcount unit tests pass (13 tests, 100% coverage on scripts/tier2/failcount.py)",
-    "Slash command spec test passes (11 contract assertions)",
-    "Report writer tests pass (4 opt-in tests)",
+    "All failcount unit tests pass (19 tests, 100% coverage on scripts/tier2/failcount.py)",
+    "Slash command spec test passes (12 contract assertions)",
+    "Report writer tests pass (8 opt-in tests, 100% coverage on scripts/tier2/write_report.py)",
     "Bootstrap -WhatIf runs without error",
     "Pre-push hook refuses a push attempt (sandbox enforcement test)",
     "Smoke e2e creates a feature branch via git switch -c",