From 4b88defdab64f8c810bd88003962f9c46e017320 Mon Sep 17 00:00:00 2001
From: boris <shuaibo.zhang@hotmail.com>
Date: Sun, 6 Sep 2026 18:07:34 +0800
Subject: [PATCH] docs: record date numeric VM acceptance

---
 docs/evidence/date-numeric-vm-20260906.json | 90 +++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 docs/evidence/date-numeric-vm-20260906.json

diff --git a/docs/evidence/date-numeric-vm-20260906.json b/docs/evidence/date-numeric-vm-20260906.json
new file mode 100644
index 0000000..e753bc0
--- /dev/null
+++ b/docs/evidence/date-numeric-vm-20260906.json
@@ -0,0 +1,90 @@
+{
+  "schemaVersion": "fidc.date-numeric-vm-performance/v1",
+  "generatedAt": "2026-09-06T18:08:00+08:00",
+  "host": "192.168.31.177",
+  "change": {
+    "engineCommit": "bc228980afc02cde483b1a6fe69da4048120cbc4",
+    "serviceCommit": "bac07c208c652a717d312e332d44f90218cc1247",
+    "runnerBinarySha256": "46684dea71273466f8ba0f6351eb6f6adf694393ff23ee278054e3b6b71acbe5",
+    "description": "Valid ISO date literals directly compared with trade_date, current_date, date, decision_date or execution_date compile to the numeric bytecode VM as YYYYMMDD keys. All other strings remain on the Rhai path. Numeric VM floating comparisons now match Rhai relative epsilon semantics."
+  },
+  "correctnessBug": {
+    "previousBehavior": "Numeric VM used exact f64 comparisons while Rhai used relative f64::EPSILON comparisons, so an expression could change result depending on whether it compiled to VM or fell back to Rhai.",
+    "capturedExample": "11.699999999999998 == 11.7",
+    "previousVmResult": false,
+    "rhaiAndFixedVmResult": true,
+    "operatorsAligned": [
+      "==",
+      "!=",
+      "<",
+      "<=",
+      ">",
+      ">="
+    ]
+  },
+  "request": {
+    "sourceRunId": "btr_1788681250851_3170500_1",
+    "startDate": "2023-01-03",
+    "endDate": "2025-12-31",
+    "frequency": "1d",
+    "matchingType": "next_bar_open",
+    "initialCash": 10000000.0,
+    "benchmark": "000852.SH",
+    "frozenBundleReused": true
+  },
+  "baseline": {
+    "engineCommit": "840473362d7032b80d551ba5935723ee823dffa1",
+    "hotEngineMedianSeconds": 5.049,
+    "hotTotalMedianSeconds": 5.796
+  },
+  "candidate": {
+    "coldRun": {
+      "runId": "btr_1788688964051_3295756_0",
+      "totalSeconds": 21.341,
+      "dataSeconds": 7.904,
+      "engineSeconds": 12.519,
+      "classification": "post-deploy process cold and concurrent host-load observation; retained explicitly and excluded from the hot median"
+    },
+    "hotRunIds": [
+      "btr_1788688990229_3295756_1",
+      "btr_1788689001276_3295756_2",
+      "btr_1788689030863_3295756_3",
+      "btr_1788689059131_3295756_4"
+    ],
+    "hotEngineSeconds": [
+      4.963,
+      4.934,
+      4.854,
+      4.859
+    ],
+    "hotEngineMedianSeconds": 4.8965,
+    "hotTotalSeconds": [
+      5.901,
+      5.619,
+      5.738,
+      5.539
+    ],
+    "hotTotalMedianSeconds": 5.6785,
+    "incrementalHotEngineImprovementPercent": 3.0204,
+    "incrementalHotTotalImprovementPercent": 2.0273
+  },
+  "resultParity": {
+    "totalReturn": -0.615167693429,
+    "tradeCount": 4961,
+    "canonicalResultSha256": "f9c26271d4f2096e51429b6106740f600757823789bf6447cd0c524f702f0836",
+    "resultStoreSha256": "56042bd25bd4261e41e8237c9f5ead580b782d897baae58c8e4436f331a1d91f",
+    "allFiveRunsEqualBaseline": true,
+    "returnDelta": 0.0,
+    "tradeCountDelta": 0
+  },
+  "validation": {
+    "numericVmTests": "4 passed, 1 ignored",
+    "capturedRegressionTest": "platform_helpers_support_generic_rolling_stats_and_normalized_factors",
+    "workspaceTests": "423 passed, 6 ignored plus all integration tests passed",
+    "invalidDateLiteralFallsBack": true,
+    "nonDateStringFallsBack": true,
+    "helperDateArgumentPreserved": true,
+    "runtimeUser": "boris",
+    "serviceHealth": "ok"
+  }
+}