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split_domains.py

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+"""
+Run-once script to split domains.jpg into individual card images.
+
+Grid: 7 columns x 10 rows (left-to-right, top-to-bottom)
+Output: images/domains/domain_r{row}c{col}.jpg  (1-indexed)
+"""
+
+from pathlib import Path
+from PIL import Image
+
+SOURCE = Path("images/domains.jpg")
+OUT_DIR = Path("images/domains")
+COLS = 10
+ROWS = 7
+TRIM = 2  # pixels to shave from each edge after splitting
+
+OUT_DIR.mkdir(parents=True, exist_ok=True)
+
+img = Image.open(SOURCE)
+W, H = img.size
+print(f"Source: {W}x{H}px  →  cell size before trim: {W//COLS}x{H//ROWS}px")
+
+cell_w = W / COLS
+cell_h = H / ROWS
+
+for row in range(ROWS):
+    for col in range(COLS):
+        left   = round(col * cell_w)
+        top    = round(row * cell_h)
+        right  = round((col + 1) * cell_w)
+        bottom = round((row + 1) * cell_h)
+
+        card = img.crop((left, top, right, bottom))
+        card = card.crop((TRIM, TRIM, card.width - TRIM, card.height - TRIM))
+
+        name = f"domain_r{row+1:02d}c{col+1:02d}.jpg"
+        card.save(OUT_DIR / name, quality=90)
+
+print(f"Saved {ROWS * COLS} images to {OUT_DIR}/")