feat: Bulk HTML export for collection

server/routes/api/collections.ts

@@ -544,7 +544,11 @@ router.post(
   rateLimiter(RateLimiterStrategy.TenPerHour),
   async (ctx) => {
     const { id } = ctx.request.body;
+    const { format = FileOperationFormat.MarkdownZip } = ctx.request.body;
+
     assertUuid(id, "id is required");
+    assertIn(format, Object.values(FileOperationFormat), "Invalid format");
+
     const { user } = ctx.state;
     const team = await Team.findByPk(user.teamId);
     authorize(user, "createExport", team);
@@ -559,6 +563,7 @@ router.post(
         collection,
         user,
         team,
+        format,
         ip: ctx.request.ip,
         transaction,
       });