Refactor repository structure for clarity and professionalism

- Move scripts to tools/ directory
- Rename pyton.py to generate_swatches.py
- Rename down.py to downscale_colors.py
- Remove hardcoded API key from generate_swatches.py
- Update README.md to reference local color assets instead of placeholders

tools/downscale_colors.py

@@ -0,0 +1,25 @@
+from PIL import Image
+import os
+
+# =========================
+# CONFIGURACIÓN
+# =========================
+INPUT_DIR = "assets/colors"
+OUTPUT_SIZE = (32, 32)  # cambia a (24, 24) si lo prefieres
+
+SUPPORTED_EXTENSIONS = (".png", ".jpg", ".jpeg", ".webp")
+
+# =========================
+# DOWNSCALE
+# =========================
+for filename in os.listdir(INPUT_DIR):
+    if filename.lower().endswith(SUPPORTED_EXTENSIONS):
+        path = os.path.join(INPUT_DIR, filename)
+
+        with Image.open(path) as img:
+            img = img.convert("RGB")
+            img = img.resize(OUTPUT_SIZE, Image.Resampling.LANCZOS)
+            img.save(path, optimize=True)
+
+        print(f"Downscaled {filename} to {OUTPUT_SIZE[0]}x{OUTPUT_SIZE[1]}")
+