diff --git a/src/main.ts b/src/main.ts
index dfc53bc..978dcef 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -39,6 +39,7 @@ function createWindow(): void {
     },
   });
   void mainWindow.loadFile(path.join(__dirname, 'index.html'));
+  mainWindow.webContents.openDevTools();
   mainWindow.on('close', (e: Electron.Event) => {
     if (!isQuitting) {
       e.preventDefault();
diff --git a/src/renderer.ts b/src/renderer.ts
index 346a97b..7c5f806 100644
--- a/src/renderer.ts
+++ b/src/renderer.ts
@@ -1,58 +1,3 @@
-interface DeviceEntry {
-  vendorId: number;
-  productId: number;
-  displayName: string;
-  manufacturer: string;
-  product: string;
-  serialNumber: string;
-}
-
-interface CpuTempResult {
-  main: number;
-  cores: number[];
-  max: number;
-  error?: string;
-}
-
-interface RamResult {
-  total: number;
-  free: number;
-  used: number;
-  usedPercent: string;
-  error?: string;
-}
-
-interface GpuController {
-  vendor: string;
-  model: string;
-  temperatureGpu: number | null;
-  memoryUsed: number | null;
-  memoryTotal: number | null;
-}
-
-interface ElectronAPI {
-  systemCpuTemp: () => Promise<CpuTempResult>;
-  systemRam: () => Promise<RamResult>;
-  systemGpu: () => Promise<GpuController[] | { error: string }>;
-  usbListDevices: () => Promise<DeviceEntry[] | { error: string }>;
-  usbConnect: (vendorId: number, productId: number) => Promise<{ success: boolean } | { error: string }>;
-  prefsGet: (key?: string) => Promise<unknown>;
-  prefsSet: (key: string, value: unknown) => Promise<unknown>;
-  prefsDelete: (key: string) => Promise<unknown>;
-  dialogOpenFile: (options?: unknown) => Promise<{ canceled: boolean; filePaths: string[] }>;
-  dialogSaveFile: (options?: unknown) => Promise<{ canceled: boolean; filePath: string }>;
-}
-
-declare global {
-  interface Window {
-    electronAPI: ElectronAPI;
-  }
-}
-
-export {};
-
-const api: ElectronAPI = window.electronAPI;
-
 function isError<T>(result: T | { error: string }): result is { error: string } {
   return result !== null && typeof result === 'object' && 'error' in result;
 }
@@ -61,6 +6,8 @@ function formatError(result: { error: string }): string {
   return `Error: ${result.error}`;
 }
 
+const api: ElectronAPI = window.electronAPI;
+
 // --- System Info ---
 async function refreshSystemInfo(): Promise<void> {
   const [cpuTemp, ram, gpu] = await Promise.all([
diff --git a/tsconfig.json b/tsconfig.json
index f970986..b9ae332 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -18,5 +18,5 @@
     "noFallthroughCasesInSwitch": true,
     "noImplicitReturns": true
   },
-  "include": ["src/**/*.ts"]
+  "include": ["src"]
 }