feat: compulsory save guid + db dir cleanup

src/common/contract.ts

@@ -48,7 +48,7 @@ const PostLogRequestParamsSchema = z.object({
     description: "Version of the game that generated this log",
     example: "1.7.0",
   }),
-  saveGuid: z.string().uuid().optional().openapi({
+  saveGuid: z.string().uuid().openapi({
     title: "Save GUID",
     description:
       "A unique identifier for a whole game, which can be part of a multi-session game",
@@ -185,7 +185,7 @@ export const contract = c.router(
   {
     postLog: {
       method: "POST",
-      path: "/logs/:gameName/:version/:saveGuid?/:sessionGuid",
+      path: "/logs/:gameName/:version/:saveGuid/:sessionGuid",
       body: PostLogRequestBodySchema,
       pathParams: PostLogRequestParamsSchema,
       responses: {