fix: offline manifest + snapshot timestamp for demo run

Author: zheyuliu328

MethodD/data/snapshots/manifest.json

@@ -1,34 +1,24 @@
 {
-  "data_mode_default": "OFFLINE_SNAPSHOT_REAL",
-  "data_source": "Yahoo Finance optionChain (query2.finance.yahoo.com/v7/finance/options)",
-  "pricing_rule": "mid_else_last",
+  "mode": "OFFLINE_SNAPSHOT_REAL",
   "ticker": "NVDA",
+  "created_at": "2026-01-31T01:57:43.339905+00:00",
   "timezone": "CST",
-  "captured_at_t0_utc": "2026-01-31T01:57:43.737232+00:00",
-  "t5_target_rule": "t0_plus_5_trading_days",
-  "expiries": [
-    "2026-02-06",
-    "2026-02-27",
-    "2026-03-06"
-  ],
+  "data_source": "Yahoo Finance optionChain (query2.finance.yahoo.com/v7/finance/options)",
+  "pricing_rule": "mid_else_last",
   "contract_key": {
-    "ticker": "NVDA",
-    "type": "call",
-    "expiry_epoch": 1770336000,
+    "optionType": "call",
+    "expiry": "2026-02-06",
     "strike": 190.0,
     "contractSymbol": "NVDA260206C00190000"
   },
   "snapshots": {
     "t0": {
-      "2026-02-06": "nvda_chain_t0_2026-02-06_20260131_095743.json",
-      "2026-02-27": "nvda_chain_t0_2026-02-27_20260131_095743.json",
-      "2026-03-06": "nvda_chain_t0_2026-03-06_20260131_095743.json"
+      "file": "nvda_chain_t0_2026-02-06_20260131_095743.json",
+      "checksum": "5b369403ede0ddbcdb061d1f4136468dc4bb61c9d172ce78f8a4b63eacf9be4f"
     },
     "t5": {
-      "2026-02-06": "nvda_chain_t5_2026-02-06_20260131_095756.json",
-      "2026-02-27": "nvda_chain_t5_2026-02-27_20260131_095756.json",
-      "2026-03-06": "nvda_chain_t5_2026-03-06_20260131_095756.json"
+      "file": "nvda_chain_t5_2026-02-06_20260131_095756.json",
+      "checksum": "5478e96e555c21cb44084bf5d024880bad6c1420b3fddefaab6a2f0864f94ecb"
     }
-  },
-  "captured_at_t5_utc": "2026-01-31T01:57:56.499912+00:00"
+  }
 }

MethodD/data/snapshots/manifest.json.sha256

@@ -1 +1 @@
-6667961d327763b6b410877d6649f2ef3f0e77e70b9736e2ee6a5aeae46159b4
+939423525efd9eefedf5c6a5bd04ee66e8b467e7db12b1dc26c6d31ad0546967  manifest.json

MethodD/src/data/real_data_loader.py

@@ -193,6 +193,11 @@ def load_snapshot(path: str) -> Dict[str, object]:
         data = pd.read_json(path, typ='series').to_dict()
         if isinstance(data.get('chain'), list):
             data['chain'] = pd.DataFrame(data.get('chain', []))
+        meta = data.get('meta') or {}
+        if not data.get('timestamp') and meta.get('captured_at_utc'):
+            data['timestamp'] = meta.get('captured_at_utc')
+        if not data.get('ticker') and meta.get('ticker'):
+            data['ticker'] = meta.get('ticker')
         return data
 
     if path.endswith('.csv'):