feat: Implement dataset versioning and management for NNUE training data

modules/bot/python/src/tactical_positions_extractor.py

@@ -17,7 +17,7 @@ from generate import play_random_game_and_collect_positions
 
 def download_and_extract_puzzle_db(
         url: str = 'https://database.lichess.org/lichess_db_puzzle.csv.zst',
-        output_dir: str = 'trainingdata'
+        output_dir: str = 'tactical_data'
 ):
     """Download and extract the Lichess puzzle database."""
     output_path = Path(output_dir)
@@ -141,6 +141,31 @@ def merge_positions(
     print(f"{'='*60}\n")
 
 
+def extract_tactical_only(
+        puzzle_csv: str,
+        output_file: str,
+        max_puzzles: int = 300_000
+) -> int:
+    """Extract tactical positions and save to file (no merge prompts).
+
+    Args:
+        puzzle_csv: Path to Lichess puzzle CSV
+        output_file: Where to save the FEN positions
+        max_puzzles: Maximum puzzles to extract
+
+    Returns:
+        Number of positions extracted
+    """
+    print("Extracting tactical positions from puzzle database...")
+    tactical_positions = extract_puzzle_positions(puzzle_csv, max_puzzles)
+
+    with open(output_file, 'w') as f:
+        for fen in tactical_positions:
+            f.write(fen + '\n')
+
+    return len(tactical_positions)
+
+
 def interactive_merge_positions(
         puzzle_csv: str,
         output_file: str = 'position.txt',