refactor(work): run the attempt chain and mutations as writer jobs

crates/tracedecay-application/tests/application_suite/main.rs

@@ -17,6 +17,7 @@ mod observability_rollup_convergence;
 // root: the work_rollup bench mounts it, and the suite itself uses a subset.
 pub mod observability_runtime_contract;
 mod registered_scope_route;
+mod work_attempt_jobs;
 mod work_leaf_jobs;
 mod work_run_control_jobs;
 mod work_service_composition;