docs: record scoped native daily factor visibility tests

docs/evidence/native-daily-factor-visibility-20260907.json

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+{
+  "date": "2026-09-07",
+  "host": "192.168.31.177",
+  "identity": "boris",
+  "implementationCommit": "a02ac6e",
+  "valueRegressionCommit": "cb97aa1",
+  "scope": "Native daily indicator fields explicitly bound in stockPoolFactorContract; other factor fields and pricing are unchanged.",
+  "targetedTests": {"passed": 3, "failed": 0},
+  "fullLibraryTestsBeforeAdditionalValueCase": {"passed": 447, "ignored": 6, "failed": 0},
+  "provenCases": [
+    "09:30, 10:30 and 14:30 resolve to the preceding trading date",
+    "15:00 resolves to the completed decision day",
+    "active intraday datetime applies when no explicit execution time exists",
+    "next-open retains the completed decision day",
+    "no previous trading date does not fall back to the current day",
+    "stock state with prior value 2 and current value 999 reads 2 intraday and 999 at close",
+    "unbound factor value remains unchanged"
+  ],
+  "productionDeployed": false,
+  "realBacktestAcceptanceComplete": false,
+  "limitations": [
+    "This is not a generic per-field publication-timestamp model for all factor datasets.",
+    "Raw dynamic fields used without a stock-pool native binding need separate availability-contract review.",
+    "Saved-version browser handoff and real same-sample intraday/next-open replay are still required."
+  ]
+}