chore(docs): document ScoreExtractor tiling and refactor debug scripts (#563)

scripts/debug/debug_blocks.py

@@ -0,0 +1,19 @@
+# Research Script for Debugging process_pages
+import cv2
+import pickle
+import os
+
+out_dir = r"C:\Users\Certes\.gemini\antigravity\brain\975cea00-dd68-4689-9ee3-f1a2408b4ee6\debug_blocks"
+os.makedirs(out_dir, exist_ok=True)
+
+with open('unique_pages.pkl', 'rb') as f:
+    unique_pages = pickle.load(f)
+
+from score_extractor import ScoreExtractor
+extractor = ScoreExtractor()
+extractor.process_pages(unique_pages)
+
+for i, block in enumerate(extractor.final_sheet_chunks):
+    cv2.imwrite(os.path.join(out_dir, f"block_{i:02d}.png"), block)
+
+print("Dumped blocks!")