Refactor repository layer (and implement garage)

src/idz/decoder/saveStocker.ts

@@ -2,6 +2,7 @@ import { bitmap } from "./_bitmap";
 import { chara } from "./_chara";
 import { RequestCode } from "./_defs";
 import { BackgroundCode, Id } from "../model/base";
+import { CarSelector } from "../model/car";
 import { Profile } from "../model/profile";
 import { SaveStockerRequest } from "../request/saveStocker";
 
@@ -12,7 +13,9 @@ export function saveStocker(buf: Buffer): SaveStockerRequest {
   return {
     type: "save_stocker_req",
     profileId: buf.readUInt32LE(0x0004) as Id<Profile>,
+
     backgrounds: bitmap(buf.slice(0x0008, 0x002c)) as BackgroundCode[],
+    selectedCar: buf.readUInt16LE(0x009c) as CarSelector,
     chara: chara(buf.slice(0x009e, 0x00b2)),
   };
 }