refactor: Enhance environment configuration and loading mechanism

- Implement flexible environment variable loading strategy
- Add support for environment-specific and local override configuration files
- Create new `loadEnv.ts` module for dynamic environment configuration
- Update configuration loading in multiple config files
- Remove deprecated `.env.development.template`
- Add setup script for environment validation
- Improve WebSocket error handling and client configuration

scripts/setup.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+# Copy template if .env doesn't exist
+if [ ! -f .env ]; then
+    cp .env.example .env
+    echo "Created .env file from template. Please update your credentials!"
+fi
+
+# Validate required variables
+required_vars=("HASS_HOST" "HASS_TOKEN")
+missing_vars=()
+
+for var in "${required_vars[@]}"; do
+    if ! grep -q "^$var=" .env; then
+        missing_vars+=("$var")
+    fi
+done
+
+if [ ${#missing_vars[@]} -ne 0 ]; then
+    echo "ERROR: Missing required variables in .env:"
+    printf '%s\n' "${missing_vars[@]}"
+    exit 1
+fi
+
+# Check Docker version compatibility
+docker_version=$(docker --version | awk '{print $3}' | cut -d',' -f1)
+if [ "$(printf '%s\n' "20.10.0" "$docker_version" | sort -V | head -n1)" != "20.10.0" ]; then
+    echo "ERROR: Docker version 20.10.0 or higher required"
+    exit 1
+fi
+
+echo "Environment validation successful"