docs: Update environment configuration and README with comprehensive setup guide

- Enhance `.env.example` with more detailed and organized configuration options
- Refactor README to provide clearer setup instructions and system architecture overview
- Add new `scripts/setup-env.sh` for flexible environment configuration management
- Update `docs/configuration.md` with detailed environment loading strategy and best practices
- Improve documentation for speech features, client integration, and development workflows

scripts/setup-env.sh

@@ -0,0 +1,97 @@
+#!/bin/bash
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Function to print colored messages
+print_message() {
+    local color=$1
+    local message=$2
+    echo -e "${color}${message}${NC}"
+}
+
+# Function to check if a file exists
+check_file() {
+    if [ -f "$1" ]; then
+        return 0
+    else
+        return 1
+    fi
+}
+
+# Function to copy environment file
+copy_env_file() {
+    local source=$1
+    local target=$2
+    if [ -f "$target" ]; then
+        print_message "$YELLOW" "Warning: $target already exists. Skipping..."
+    else
+        cp "$source" "$target"
+        if [ $? -eq 0 ]; then
+            print_message "$GREEN" "Created $target successfully"
+        else
+            print_message "$RED" "Error: Failed to create $target"
+            exit 1
+        fi
+    fi
+}
+
+# Main script
+print_message "$GREEN" "Setting up environment files..."
+
+# Check if .env.example exists
+if ! check_file ".env.example"; then
+    print_message "$RED" "Error: .env.example not found!"
+    exit 1
+fi
+
+# Setup base environment file
+if [ "$1" = "--force" ]; then
+    cp .env.example .env
+    print_message "$GREEN" "Forced creation of .env file"
+else
+    copy_env_file ".env.example" ".env"
+fi
+
+# Determine environment
+ENV=${NODE_ENV:-development}
+case "$ENV" in
+    "development"|"dev")
+        ENV_FILE=".env.dev"
+        ;;
+    "production"|"prod")
+        ENV_FILE=".env.prod"
+        ;;
+    "test")
+        ENV_FILE=".env.test"
+        ;;
+    *)
+        print_message "$RED" "Error: Invalid environment: $ENV"
+        exit 1
+        ;;
+esac
+
+# Copy environment-specific file
+if [ -f "$ENV_FILE" ]; then
+    if [ "$1" = "--force" ]; then
+        cp "$ENV_FILE" .env
+        print_message "$GREEN" "Forced override of .env with $ENV_FILE"
+    else
+        print_message "$YELLOW" "Do you want to override .env with $ENV_FILE? [y/N] "
+        read -r response
+        if [[ "$response" =~ ^([yY][eE][sS]|[yY])+$ ]]; then
+            cp "$ENV_FILE" .env
+            print_message "$GREEN" "Copied $ENV_FILE to .env"
+        else
+            print_message "$YELLOW" "Keeping existing .env file"
+        fi
+    fi
+else
+    print_message "$YELLOW" "Warning: $ENV_FILE not found. Using default .env"
+fi
+
+print_message "$GREEN" "Environment setup complete!"
+print_message "$YELLOW" "Remember to set your HASS_TOKEN in .env"