chore: update typedefs and fix dbkv issue (#1840)

* chore: update typedefs

* fix:dbkv decr

src/backend/src/services/SUService.d.ts

@@ -1,8 +1,8 @@
-import type { Actor } from "./auth/Actor";
+import type { Actor } from './auth/Actor';
 
 export class SUService {
     _construct(): void;
-    get_system_actor(): Promise<any>;
+    get_system_actor(): Promise<Actor>;
     sudo<T>(callback: () => Promise<T>): Promise<T>;
     sudo<T>(actorOrCallback: Actor, callback: () => Promise<T>): Promise<T>;
 }

src/backend/src/services/repositories/DBKVStore/DBKVStore.ts

@@ -309,8 +309,8 @@ export class DBKVStore {
         return currVal as T extends { '': number } ? number : RecursiveRecord<number>;
     }
 
-    async decr(...params: Parameters<typeof DBKVStore.prototype.incr>): ReturnType<typeof DBKVStore.prototype.incr> {
-        return await this.incr(...params);
+    async decr({ key, pathAndAmountMap }: Parameters<typeof DBKVStore.prototype.incr>[0]): ReturnType<typeof DBKVStore.prototype.incr> {
+        return await this.incr({ key, pathAndAmountMap: Object.fromEntries(Object.entries(pathAndAmountMap).map(([k, v]) => [k, -v])) });
     }
 
     async #expireat(key: string, timestamp: number){