diff --git a/docs/evidence/typed-current-rolling-helper-20260905.json b/docs/evidence/typed-current-rolling-helper-20260905.json
new file mode 100644
index 0000000..f2779c1
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+++ b/docs/evidence/typed-current-rolling-helper-20260905.json
@@ -0,0 +1,95 @@
+{
+  "schemaVersion": "fidc-typed-current-rolling-helper/v1",
+  "measuredAt": "2026-09-05T02:51:00+08:00",
+  "host": "192.168.31.177",
+  "engineCommit": "75ab0c06c66761d7b2b0edb3359359e13d1265e3",
+  "serviceCommit": "9fd5a9e6d5668af57f6942fc3c4127953545d9c6",
+  "runnerBinarySha256": "1071852a374620029398a967d485b827ed2defbb6ecbcc3f1ee6ffd3e2db76b6",
+  "implementation": {
+    "description": "compile static stock close/volume rolling_mean_current calls to typed DataSet kernels and bypass generic string normalization and helper dispatch",
+    "evaluationRemainsLazy": true,
+    "dynamicFieldsUseGenericFallback": true,
+    "stockStateSizeChanged": false,
+    "rollingFormulaChanged": false,
+    "pitSemanticsChanged": false
+  },
+  "primaryFiveYearContract": {
+    "startDate": "2021-08-23",
+    "endDate": "2026-08-28",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "totalReturn": 0.9219861819172002,
+    "tradeCount": 26088,
+    "canonicalSha256": "b42fea66237d06eadb24f6b8c9e2760e7319fe3699f315b99e01f433ef2aa234",
+    "resultStoreSha256": "92343fb369fea68b2544b654151c5c43a935940580b14afbe8eefb3844f72a54",
+    "processCold": {
+      "totalSeconds": 21.504,
+      "dataSeconds": 12.753,
+      "engineSeconds": 4.618,
+      "unattributedSeconds": 3.489
+    },
+    "processHotEngineSeconds": [5.292, 4.729, 4.778, 4.635, 4.685],
+    "processHotMedianEngineSeconds": 4.729,
+    "calendarMajorBaselineMedianEngineSeconds": 5.202,
+    "observedMedianImprovementPercent": 9.09265667051134,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "secondaryFiveYearContract": {
+    "totalReturn": 1.1342962298106998,
+    "tradeCount": 19404,
+    "canonicalSha256": "0dbd3fad624097c673c4a5ec2f545f95e9c21d1d5337bb2b48ffeb22b16cb2b9",
+    "resultStoreSha256": "416d2f87241fb4c6b917f6aeecb588f82f6e7d51a103f4c53a74d11971f16839",
+    "engineSeconds": [4.031, 4.08, 4.049, 3.976],
+    "medianEngineSeconds": 4.049,
+    "calendarMajorBaselineMedianEngineSeconds": 4.878,
+    "observedMedianImprovementPercent": 16.99466994669946,
+    "resultConsistent": true,
+    "terminalAuditStatus": "clean"
+  },
+  "hardwareCounters": {
+    "candidateRunId": "btr_1788547776300_3162323_11",
+    "candidateEngineSeconds": 4.782,
+    "candidateCycles": 13368504015,
+    "candidateInstructions": 26049740736,
+    "candidateBranches": 4601262679,
+    "candidateBranchMisses": 19416727,
+    "fieldProjectionBaselineInstructions": 26663937176,
+    "fieldProjectionBaselineBranches": 4751846020,
+    "observedInstructionReductionPercent": 2.303472423993083,
+    "observedBranchReductionPercent": 3.1689440349331863
+  },
+  "profile": {
+    "runId": "btr_1788547704257_3162323_10",
+    "engineSeconds": 12.057,
+    "hostLoadAverageAfterRun": 35.31,
+    "performanceComparisonExcluded": true,
+    "genericResolveCurrentRollingMeanPresentInTopProfile": false,
+    "typedCurrentVolumeKernelPercent": 2.25,
+    "note": "profile percentages remain useful for call-path attribution, but this run overlapped heavy external and managed factor CPU load and is excluded from wall-time comparison"
+  },
+  "memory": {
+    "serviceCgroupCurrentBytes": 11495362560,
+    "serviceCgroupPeakBytes": 11497156608,
+    "processRssKiB": 11213936,
+    "processAnonymousKiB": 11197740
+  },
+  "testGate": {
+    "coreUnitTotal": 421,
+    "corePassed": 415,
+    "ignoredManualBenchmarks": 6,
+    "failed": 0,
+    "integrationSuitesPassed": true
+  },
+  "remoteArtifacts": [
+    "/srv/fidc/canonical/run/fidc-private/evidence/typed-current-rolling-primary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/typed-current-rolling-secondary-20260905.json",
+    "/srv/fidc/canonical/run/fidc-private/evidence/typed-current-rolling-profile-20260905/perf.data",
+    "/srv/fidc/canonical/run/fidc-private/evidence/typed-current-rolling-profile-20260905/perf-report.txt",
+    "/srv/fidc/canonical/run/fidc-private/evidence/typed-current-rolling-perf-stat-20260905/perf-stat.csv"
+  ],
+  "acceptance": {
+    "status": "accepted_generic_typed_lazy_helper",
+    "reason": "two different five-year contracts preserve exact outputs, both stable medians improve, hardware work falls, and the implementation keeps lazy short-circuit evaluation without enlarging per-stock state"
+  }
+}