feat: add file attachment

src/preload/index.d.ts

@@ -24,12 +24,11 @@ declare global {
       file: {
         select: (options?: OpenDialogOptions) => Promise<FileType[] | null>
         upload: (file: FileType) => Promise<FileType>
-        delete: (fileId: string) => Promise<{ success: boolean }>
+        delete: (fileId: string) => Promise<void>
+        read: (fileId: string) => Promise<string>
+        base64Image: (fileId: string) => Promise<{ mime: string; base64: string; data: string }>
         clear: () => Promise<void>
       }
-      image: {
-        base64: (filePath: string) => Promise<{ mime: string; base64: string; data: string }>
-      }
     }
   }
 }

src/preload/index.ts

@@ -20,10 +20,9 @@ const api = {
     select: (options?: OpenDialogOptions) => ipcRenderer.invoke('file:select', options),
     upload: (filePath: string) => ipcRenderer.invoke('file:upload', filePath),
     delete: (fileId: string) => ipcRenderer.invoke('file:delete', fileId),
+    read: (fileId: string) => ipcRenderer.invoke('file:read', fileId),
+    base64Image: (fileId: string) => ipcRenderer.invoke('file:base64Image', fileId),
     clear: () => ipcRenderer.invoke('file:clear')
-  },
-  image: {
-    base64: (filePath: string) => ipcRenderer.invoke('image:base64', filePath)
   }
 }