style(test): rustfmt the env-approval journey

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/picloud-cli/tests/env_approval.rs

@@ -28,7 +28,11 @@ fn gated_repo(dir: &Path, project: &str, group: &str) {
         ),
     )
     .unwrap();
-    fs::write(dir.join("picloud.production.toml"), "# production overlay\n").unwrap();
+    fs::write(
+        dir.join("picloud.production.toml"),
+        "# production overlay\n",
+    )
+    .unwrap();
     fs::write(dir.join("picloud.staging.toml"), "# staging overlay\n").unwrap();
 }