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_rest_api.sh

@@ -0,0 +1,70 @@
+#!/bin/bash
+# Test all REST API endpoints
+
+SERVER=${1:-localhost}
+PORT=8765
+BASE="http://${SERVER}:${PORT}"
+
+echo "Testing Lighting Controller REST API"
+echo "====================================="
+echo ""
+
+# Test 1: GET /api/state
+echo "1. GET /api/state"
+echo "-----------------"
+curl -s "${BASE}/api/state" | python3 -m json.tool | head -20
+echo ""
+
+# Test 2: POST /api/pattern
+echo "2. POST /api/pattern (set to 'alternating')"
+echo "--------------------------------------------"
+curl -s -X POST "${BASE}/api/pattern" \
+  -H "Content-Type: application/json" \
+  -d '{"pattern": "alternating"}' | python3 -m json.tool
+echo ""
+
+# Test 3: GET /api/pattern
+echo "3. GET /api/pattern"
+echo "-------------------"
+curl -s "${BASE}/api/pattern" | python3 -m json.tool
+echo ""
+
+# Test 4: POST /api/parameters (brightness)
+echo "4. POST /api/parameters (brightness=75)"
+echo "----------------------------------------"
+curl -s -X POST "${BASE}/api/parameters" \
+  -H "Content-Type: application/json" \
+  -d '{"brightness": 75}' | python3 -m json.tool
+echo ""
+
+# Test 5: GET /api/parameters
+echo "5. GET /api/parameters"
+echo "----------------------"
+curl -s "${BASE}/api/parameters" | python3 -m json.tool
+echo ""
+
+# Test 6: POST /api/color-palette (select slot 2)
+echo "6. POST /api/color-palette (select slot 2)"
+echo "-------------------------------------------"
+curl -s -X POST "${BASE}/api/color-palette" \
+  -H "Content-Type: application/json" \
+  -d '{"selected_indices": [2, 1]}' | python3 -m json.tool | head -10
+echo ""
+
+# Test 7: GET /api/color-palette
+echo "7. GET /api/color-palette"
+echo "-------------------------"
+curl -s "${BASE}/api/color-palette" | python3 -m json.tool | head -15
+echo ""
+
+# Test 8: POST /api/pattern (rainbow)
+echo "8. POST /api/pattern (set to 'rainbow')"
+echo "----------------------------------------"
+curl -s -X POST "${BASE}/api/pattern" \
+  -H "Content-Type: application/json" \
+  -d '{"pattern": "rainbow"}' | python3 -m json.tool
+echo ""
+
+echo "====================================="
+echo "All tests complete!"
+