Initial commit: WLED Screen Controller with FastAPI server and Home Assistant integration

This is a complete WLED ambient lighting controller that captures screen border pixels
and sends them to WLED devices for immersive ambient lighting effects.

## Server Features:
- FastAPI-based REST API with 17+ endpoints
- Real-time screen capture with multi-monitor support
- Advanced LED calibration system with visual GUI
- API key authentication with labeled tokens
- Per-device brightness control (0-100%)
- Configurable FPS (1-60), border width, and color correction
- Persistent device storage (JSON-based)
- Comprehensive Web UI with dark/light themes
- Docker support with docker-compose
- Windows monitor name detection via WMI (shows "LG ULTRAWIDE" etc.)

## Web UI Features:
- Device management (add, configure, remove WLED devices)
- Real-time status monitoring with FPS metrics
- Settings modal for device configuration
- Visual calibration GUI with edge testing
- Brightness slider per device
- Display selection with friendly monitor names
- Token-based authentication with login/logout
- Responsive button layout

## Calibration System:
- Support for any LED strip layout (clockwise/counterclockwise)
- 4 starting position options (corners)
- Per-edge LED count configuration
- Visual preview with starting position indicator
- Test buttons to light up individual edges
- Smart LED ordering based on start position and direction

## Home Assistant Integration:
- Custom HACS integration
- Switch entities for processing control
- Sensor entities for status and FPS
- Select entities for display selection
- Config flow for easy setup
- Auto-discovery of devices from server

## Technical Stack:
- Python 3.11+
- FastAPI + uvicorn
- mss (screen capture)
- httpx (async WLED client)
- Pydantic (validation)
- WMI (Windows monitor detection)
- Structlog (logging)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

server/requirements.txt

@@ -0,0 +1,34 @@
+# Web Framework
+fastapi==0.115.0
+uvicorn[standard]==0.32.0
+python-multipart==0.0.12
+
+# HTTP Client
+httpx==0.27.2
+
+# Screen Capture
+mss==9.0.2
+Pillow==10.4.0
+numpy==2.1.3
+
+# Configuration
+pydantic==2.9.2
+pydantic-settings==2.6.0
+PyYAML==6.0.2
+
+# Logging
+structlog==24.4.0
+python-json-logger==3.1.0
+
+# Utilities
+python-dateutil==2.9.0
+
+# Windows-specific (optional for friendly monitor names)
+wmi==1.5.1; sys_platform == 'win32'
+
+# Testing
+pytest==8.3.3
+pytest-asyncio==0.24.0
+pytest-cov==6.0.0
+httpx==0.27.2
+respx==0.21.1