Add complete REST API for lighting control

- Migrated from websockets to aiohttp for unified HTTP/WebSocket server
- Added REST endpoints: /api/pattern, /api/parameters, /api/state, /api/tempo/reset
- Implemented color palette API with 8-slot system and selected colors
- First selected color (index 0) is used as primary RGB for patterns
- All operations now available via simple HTTP requests (no WebSocket needed)
- Added comprehensive documentation: FRONTEND_API.md, COLOR_PALETTE_API.md
- Added test scripts: test_rest_api.sh, test_color_patterns.py
- Updated test/test_control_server.py for new /ws WebSocket path
- Configuration persistence via lighting_config.json
- Pattern parameters (n1-n4, brightness, delay) controllable via API
- WebSocket still available at /ws for legacy support

test_color_selection.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+"""
+Test script to verify that selected color is used for patterns
+"""
+import json
+import os
+import sys
+
+# Add src to path
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))
+
+from control_server import LightingController
+
+def test_color_selection():
+    """Test that the first selected color is used as RGB"""
+    
+    # Create controller (without connecting)
+    controller = LightingController(transport="spi")
+    
+    # Load config
+    controller._load_config()
+    
+    print("Color Palette Selection Test")
+    print("=" * 50)
+    print(f"\nColor Palette:")
+    for i, color in enumerate(controller.color_palette):
+        r, g, b = color['r'], color['g'], color['b']
+        print(f"  Slot {i}: RGB({r:3d}, {g:3d}, {b:3d})")
+    
+    print(f"\nSelected Indices: {controller.selected_color_indices}")
+    
+    if controller.selected_color_indices:
+        first_index = controller.selected_color_indices[0]
+        print(f"First Selected: Slot {first_index}")
+        selected_color = controller.color_palette[first_index]
+        print(f"  RGB({selected_color['r']}, {selected_color['g']}, {selected_color['b']})")
+    
+    # Test the _current_color_rgb method
+    rgb = controller._current_color_rgb()
+    print(f"\nPattern RGB (from _current_color_rgb): RGB{rgb}")
+    
+    # Verify it matches the first selected color
+    if controller.selected_color_indices:
+        first_index = controller.selected_color_indices[0]
+        expected_color = controller.color_palette[first_index]
+        expected_rgb = (expected_color['r'], expected_color['g'], expected_color['b'])
+        
+        if rgb == expected_rgb:
+            print("\n✅ SUCCESS: Pattern RGB matches first selected color!")
+        else:
+            print(f"\n❌ FAIL: Expected {expected_rgb}, got {rgb}")
+    
+    print("=" * 50)
+
+if __name__ == "__main__":
+    test_color_selection()
+