fix: resolve environment variables on application rollback

rollbackApplication() called prepareEnvironmentVariables() without the
environment env, so every ${{environment.*}} reference threw "Invalid
environment variable: environment.X" and the rollback failed with an
opaque 400 before the swarm service was updated.

fb749cd86 added the third argument to every other call site but left
services/rollbacks.ts, which had been calling the helper since 24bff9689.
The value is already captured in the snapshot by createRollback(); both
fullContext declarations simply typed environment as { project: Project },
so the missing argument was invisible to the compiler.

Co-Authored-By: Claude Opus 5 <[email protected]>

packages/server/src/services/rollbacks.ts

@@ -19,6 +19,7 @@ import { execAsync, execAsyncRemote } from "../utils/process/execAsync";
 import { getRemoteDocker } from "../utils/servers/remote-docker";
 import { type Application, findApplicationById } from "./application";
 import { findDeploymentById } from "./deployment";
+import type { Environment } from "./environment";
 import type { Mount } from "./mount";
 import { resolveServiceNetworks } from "./network";
 import type { Port } from "./port";
@@ -214,7 +215,7 @@ const rollbackApplication = async (
 	image: string,
 	serverId?: string | null,
 	fullContext?: Application & {
-		environment: {
+		environment: Environment & {
 			project: Project;
 		};
 		mounts: Mount[];
@@ -279,6 +280,7 @@ const rollbackApplication = async (
 	const envVariables = prepareEnvironmentVariables(
 		env,
 		fullContext.environment.project.env,
+		fullContext.environment.env,
 	);
 
 	let rollbackImage = image;