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

scripts/debug/dump_pages.py

@@ -0,0 +1,14 @@
+import cv2
+import pickle
+
+with open('unique_pages.pkl', 'rb') as f:
+    unique_pages = pickle.load(f)
+
+import os
+out_dir = r"C:\Users\Certes\.gemini\antigravity\brain\975cea00-dd68-4689-9ee3-f1a2408b4ee6\pages"
+os.makedirs(out_dir, exist_ok=True)
+
+for i, p in enumerate(unique_pages):
+    cv2.imwrite(os.path.join(out_dir, f"page_{i:03d}.png"), p)
+
+print(f"Saved {len(unique_pages)} pages to {out_dir}")