feat(lan-client): triggers panel + CMD DMG score badges + fix encoding project-wide

Left action panel revised to show triggers list + Create Token/Auto-Arrange.
CMD DMG badges added to center life-panel score areas (click opens matrix).
Removed renderEnhancedPanels calls that split the battlefield on damage adjust.
Added encoding='utf-8' to all bare open() calls across 17 Python files to
prevent cp1252 crashes on MTG card text with smart quotes/em-dashes.

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

ml/actions/labeler.py

@@ -330,7 +330,7 @@ def label_decisions_file(jsonl_path: str) -> Tuple[np.ndarray, List[dict]]:
     labels = []
     raw = []
 
-    with open(jsonl_path, "r") as f:
+    with open(jsonl_path, "r", encoding="utf-8") as f:
         for i, line in enumerate(f):
             line = line.strip()
             if not line: