Restructure Project Architecture with Modular Routes and Configuration

- Refactored main application entry point to use centralized configuration
- Created modular route structure with separate files for different API endpoints
- Introduced app.config.ts for centralized environment variable management
- Moved tools and route logic into dedicated files
- Simplified index.ts and improved overall project organization
- Added comprehensive type definitions for tools and API interactions

src/tools/list-devices.tool.ts

@@ -0,0 +1,46 @@
+import { z } from 'zod';
+import { Tool } from '../types/index.js';
+import { APP_CONFIG } from '../config/app.config.js';
+import { HassState } from '../types/index.js';
+
+export const listDevicesTool: Tool = {
+    name: 'list_devices',
+    description: 'List all available Home Assistant devices',
+    parameters: z.object({}).describe('No parameters required'),
+    execute: async () => {
+        try {
+            const response = await fetch(`${APP_CONFIG.HASS_HOST}/api/states`, {
+                headers: {
+                    Authorization: `Bearer ${APP_CONFIG.HASS_TOKEN}`,
+                    'Content-Type': 'application/json',
+                },
+            });
+
+            if (!response.ok) {
+                throw new Error(`Failed to fetch devices: ${response.statusText}`);
+            }
+
+            const states = await response.json() as HassState[];
+            const devices: Record<string, HassState[]> = {};
+
+            // Group devices by domain
+            states.forEach(state => {
+                const [domain] = state.entity_id.split('.');
+                if (!devices[domain]) {
+                    devices[domain] = [];
+                }
+                devices[domain].push(state);
+            });
+
+            return {
+                success: true,
+                devices
+            };
+        } catch (error) {
+            return {
+                success: false,
+                message: error instanceof Error ? error.message : 'Unknown error occurred'
+            };
+        }
+    }
+};