style: cargo fmt the workspace (release-gate cargo-fmt was red)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

core/archipelago/src/app_ops.rs

@@ -53,9 +53,7 @@ pub fn stack_member_app_ids(package_id: &str) -> &'static [&'static str] {
         // The legacy umbrella id maps to the split stack (the orchestrator's
         // umbrella alias handles this too; listing it here keeps the RPC
         // layer's fan-out explicit).
-        "mempool" | "mempool-web" => {
-            &["archy-mempool-db", "mempool-api", "archy-mempool-web"]
-        }
+        "mempool" | "mempool-web" => &["archy-mempool-db", "mempool-api", "archy-mempool-web"],
         _ => &[],
     }
 }