feat: Document subscriptions (#3834)

Co-authored-by: Tom Moor <tom.moor@gmail.com>

server/scripts/bootstrap.ts

@@ -5,7 +5,6 @@ if (process.env.NODE_ENV !== "test") {
   });
 }
 
-// @ts-expect-error ts-migrate(2322) FIXME: Type 'true' is not assignable to type 'string | un... Remove this comment to see the full error message
-process.env.SINGLE_RUN = true;
+require("../database/sequelize");
 
 export {};