fix(gebura): update SyncApps

proto/librarian/sephirah/v1/gebura.proto

@@ -39,10 +39,15 @@ message ListAppsResponse {
 }
 
 message SyncAppsRequest {
-  librarian.v1.AppID app_id = 1;
+  repeated librarian.v1.AppID app_ids = 1;
+  // if false, server will return immediately.
+  // if true, server will return data after sync finished.
+  optional bool wait_data = 2;
 }
 
-message SyncAppsResponse {}
+message SyncAppsResponse {
+  repeated librarian.v1.App apps = 1;
+}
 
 message MergeAppsRequest {
   // `internal` must be true

proto/librarian/sephirah/v1/sephirah.proto

@@ -111,9 +111,13 @@ service LibrarianSephirahService {
   // `Gebura` `Admin` Asynchronous update apps.
   // Request on INTERNAL app applies to all bound external apps.
   // Create an INTERNAL app when requested external app does not exist
+  // Server should implement a sync rate limit to prevent abuse,
+  // when rate limit reached, return without real sync.
   rpc SyncApps(SyncAppsRequest) returns (SyncAppsResponse);
   // `Gebura` `Admin` Asynchronously update apps associated with an account.
-  // Create an INTERNAL app when associated external app does not exist
+  // Create an INTERNAL app when associated external app does not exist.
+  // Server should implement a sync rate limit to prevent abuse,
+  // when rate limit reached, return without real sync.
   rpc SyncAccountApps(SyncAccountAppsRequest) returns (SyncAccountAppsResponse);
   // `Gebura` `Admin` Merge two apps
   rpc MergeApps(MergeAppsRequest) returns (MergeAppsResponse);

proto/librarian/v1/common.proto

@@ -91,9 +91,12 @@ message App {
   AppType type = 8;
   string short_description = 9;
   string icon_image_url = 10;
-  string hero_image_url = 11;
-  repeated string tags = 12;
-  repeated string alt_names = 13;
+  // must be horizontal, usually 16:9
+  string background_image_url = 11;
+  // must be vertical, usually 4:3
+  string cover_image_url = 12;
+  repeated string tags = 13;
+  repeated string alt_names = 14;
 }
 
 // Mixed info of bound apps