refactor: split preload api by domain

src/preload/lib/ipc.ts

@@ -0,0 +1,28 @@
+import { ipcRenderer } from 'electron'
+import type { IpcResult } from '../../main/types/ipc.types'
+
+export function invokeIpc<T = unknown>(channel: string, ...args: unknown[]): Promise<IpcResult<T>> {
+  return ipcRenderer.invoke(channel, ...args).then((result: unknown) => {
+    if (result && typeof result === 'object' && 'success' in (result as Record<string, unknown>)) {
+      const typed = result as Record<string, unknown>
+      const hasIpcShape = 'data' in typed || 'code' in typed || 'error' in typed
+
+      if (hasIpcShape) {
+        return typed as unknown as IpcResult<T>
+      }
+
+      if (typed.success === true) {
+        return { success: true, data: result as T }
+      }
+
+      return {
+        success: false,
+        error: typeof typed.error === 'string' ? typed.error : 'IPC operation failed'
+      }
+    }
+
+    return { success: true, data: result as T }
+  })
+}
+
+export { ipcRenderer }