Update models and learning state after May 16 draw

- Run learning for 2026-05-16 draw (7 11 20 23 27 30 SZ:9)
- Retrain LSTM on updated 3126-draw dataset
- Update generation history with new tips

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

data/generated_tips/generation_history.json

@@ -384,6 +384,20 @@
       "file": "weekly_lotto_tips_20260519_133239.csv",
       "avg_confidence": 0.4215215125819441,
       "avg_quality": 0.5999271737766253
+    },
+    {
+      "timestamp": "2026-05-19T13:44:45.213229",
+      "num_tips": 10,
+      "file": "weekly_lotto_tips_20260519_134445.csv",
+      "avg_confidence": 0.3999027555100958,
+      "avg_quality": 0.5826823762260946
+    },
+    {
+      "timestamp": "2026-05-19T13:45:00.058744",
+      "num_tips": 10,
+      "file": "weekly_lotto_tips_20260519_134500.csv",
+      "avg_confidence": 0.3999027555100958,
+      "avg_quality": 0.5826823762260946
     }
   ]
 }