chore: remove luckysheet integration

src/types/media.ts

@@ -0,0 +1,27 @@
+export interface MediaAsset {
+  id: string;
+  workspace_id: string;
+  document_id: string;
+  asset_type: string;
+  file_url: string | null;
+  thumbnail_url: string | null;
+  file_name: string | null;
+  file_size: number | null;
+  mime_type: string | null;
+  ocr_text: string | null;
+  ocr_status: string | null;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface MediaSelection {
+  assetId: string;
+  fileUrl: string;
+  thumbnailUrl?: string | null;
+  assetType?: string;
+  fileName?: string | null;
+  fileSize?: number | null;
+  mimeType?: string | null;
+}
+
+export type MediaKind = "image" | "video" | "audio" | "file";