🏗️ Clean demo asset filenames - remove timestamps

Renamed 45 files to remove timestamp suffixes
- kai_run_east_1_stylea_1767137189376.png → kai_run_east_1_stylea.png
- etc...

Creates clean, organized asset structure
Added organize_demo_assets.py script

scripts/organize_demo_assets.py

@@ -0,0 +1,120 @@
+#!/usr/bin/env python3
+"""
+Organize demo assets - rename and subfolder
+Removes timestamps and organizes into proper structure
+"""
+
+import re
+from pathlib import Path
+import shutil
+
+def rename_and_organize_demo():
+    """Organize demo assets into subfolders with clean names"""
+    
+    demo_base = Path("assets/images/demo")
+    
+    categories = {
+        'characters': demo_base / 'characters',
+        'buildings': demo_base / 'buildings',
+        'terrain': demo_base / 'terrain',
+        'environment': demo_base / 'environment'
+    }
+    
+    stats = {'renamed': 0, 'organized': 0}
+    
+    for category_name, category_path in categories.items():
+        if not category_path.exists():
+            continue
+        
+        print(f"\n📂 {category_name}/")
+        
+        # Process all PNG files
+        for png_file in sorted(category_path.glob('*.png')):
+            # Skip if already in subfolder
+            if png_file.parent != category_path:
+                continue
+            
+            filename = png_file.name
+            
+            # Remove timestamp (13 digits at end before .png)
+            clean_name = re.sub(r'_\d{13}\.png$', '.png', filename)
+            
+            if clean_name != filename:
+                stats['renamed'] += 1
+                print(f"  ✏️  {filename} → {clean_name}")
+                
+                # Rename file
+                new_path = png_file.parent / clean_name
+                if new_path.exists():
+                    # If target exists, keep the newer one
+                    print(f"    ⚠️  Target exists, keeping newer")
+                    if png_file.stat().st_mtime > new_path.stat().st_mtime:
+                        new_path.unlink()
+                        png_file.rename(new_path)
+                    else:
+                        png_file.unlink()
+                else:
+                    png_file.rename(new_path)
+    
+    print(f"\n✅ Cleaned {stats['renamed']} filenames")
+    
+    # NOW organize into subfolders
+    print("\n" + "="*70)
+    print("📁 ORGANIZING INTO SUBFOLDERS")
+    print("="*70)
+    
+    for category_name, category_path in categories.items():
+        print(f"\n📂 {category_name}/")
+        
+        # Get all PNG files again (with clean names now)
+        files = sorted(category_path.glob('*.png'))
+        
+        if not files:
+            print("  ✓ No files to organize")
+            continue
+        
+        # Group by base name
+        groups = {}
+        for f in files:
+            # Extract base name (before _styleA or _styleB)
+            match = re.match(r'(.+?)_(styleA|styleB)\.png$', f.name)
+            if match:
+                base_name = match.group(1)
+                if base_name not in groups:
+                    groups[base_name] = []
+                groups[base_name].append(f)
+        
+        # Create subfolders and move files
+        for base_name, file_list in sorted(groups.items()):
+            if len(file_list) < 2:
+                continue  # Skip if not dual-style
+            
+            subfolder = category_path / base_name
+            subfolder.mkdir(exist_ok=True)
+            
+            print(f"\n  📁 {base_name}/ ({len(file_list)} files)")
+            
+            for file_path in file_list:
+                # New organized name
+                if 'styleA' in file_path.name:
+                    new_name = f"{base_name}_styleA_1024x1024.png"
+                else:
+                    new_name = f"{base_name}_styleB_1024x1024.png"
+                
+                target = subfolder / new_name
+                
+                if not target.exists():
+                    file_path.rename(target)
+                    print(f"    → {new_name}")
+                    stats['organized'] += 1
+                else:
+                    print(f"    ⏭️  Already exists: {new_name}")
+    
+    print("\n" + "="*70)
+    print(f"✅ COMPLETE!")
+    print(f"  Renamed: {stats['renamed']}")
+    print(f"  Organized: {stats['organized']}")
+    print("="*70)
+
+if __name__ == "__main__":
+    rename_and_organize_demo()