Update draws, retrain models and generate tips for May 20-27 draws

- Added 3 missing draws (2026-05-20, 2026-05-24, 2026-05-27) to AlleLottozahlen.csv
- Retrained RF and LSTM models on 3,129 draws (42 learning cycles)
- Generated fresh tips: weekly_lotto_tips_20260528_091404.csv

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

data/generated_tips/generation_history.json

@@ -398,6 +398,13 @@
       "file": "weekly_lotto_tips_20260519_134500.csv",
       "avg_confidence": 0.3999027555100958,
       "avg_quality": 0.5826823762260946
+    },
+    {
+      "timestamp": "2026-05-28T09:14:04.565888",
+      "num_tips": 10,
+      "file": "weekly_lotto_tips_20260528_091404.csv",
+      "avg_confidence": 0.5624290307583578,
+      "avg_quality": 0.6799602036440705
     }
   ]
 }