refactor: optimize configuration and tool implementations

- Standardized error handling across tool implementations
- Improved return type consistency for tool execution results
- Simplified configuration parsing and type definitions
- Enhanced type safety for various configuration schemas
- Cleaned up and normalized tool response structures
- Updated SSE and event subscription tool implementations

src/config/hass.config.ts

@@ -1,11 +1,50 @@
-import dotenv from 'dotenv';
+import { config } from "dotenv";
+import { resolve } from "path";
 
-// Load environment variables
-dotenv.config();
+// Load environment variables based on NODE_ENV
+const envFile =
+  process.env.NODE_ENV === "production"
+    ? ".env"
+    : process.env.NODE_ENV === "test"
+      ? ".env.test"
+      : ".env.development";
+
+config({ path: resolve(process.cwd(), envFile) });
 
 export const HASS_CONFIG = {
-    BASE_URL: process.env.HASS_HOST || 'http://homeassistant.local:8123',
-    TOKEN: process.env.HASS_TOKEN || '',
-    SOCKET_URL: process.env.HASS_SOCKET_URL || '',
-    SOCKET_TOKEN: process.env.HASS_TOKEN || '',
-}; 
+  // Base configuration
+  BASE_URL: process.env.HASS_HOST || "http://localhost:8123",
+  TOKEN: process.env.HASS_TOKEN || "",
+  SOCKET_URL: process.env.HASS_WS_URL || "ws://localhost:8123/api/websocket",
+  SOCKET_TOKEN: process.env.HASS_TOKEN || "",
+
+  // Boilerplate configuration
+  BOILERPLATE: {
+    CACHE_DIRECTORY: ".cache",
+    CONFIG_DIRECTORY: ".config",
+    DATA_DIRECTORY: ".data",
+    LOG_LEVEL: "debug",
+    ENVIRONMENT: process.env.NODE_ENV || "development",
+  },
+
+  // Application configuration
+  APP_NAME: "homeassistant-mcp",
+  APP_VERSION: "1.0.0",
+
+  // API configuration
+  API_VERSION: "1.0.0",
+  API_PREFIX: "/api",
+
+  // Security configuration
+  RATE_LIMIT: {
+    WINDOW_MS: 15 * 60 * 1000, // 15 minutes
+    MAX_REQUESTS: 100,
+  },
+
+  // WebSocket configuration
+  WS_CONFIG: {
+    AUTO_RECONNECT: true,
+    MAX_RECONNECT_ATTEMPTS: 3,
+    RECONNECT_DELAY: 1000,
+  },
+};