Phase 5a: approval queue (request_apply_commit, pending/approve/deny)

hive-c0re/src/manager_server.rs

@@ -124,5 +124,17 @@ async fn dispatch(req: &ManagerRequest, coord: &Coordinator) -> ManagerResponse
                 },
             }
         }
+        ManagerRequest::RequestApplyCommit { agent, commit_ref } => {
+            tracing::info!(%agent, %commit_ref, "manager: request_apply_commit");
+            match coord.approvals.submit(agent, commit_ref) {
+                Ok(id) => {
+                    tracing::info!(%id, %agent, %commit_ref, "approval queued");
+                    ManagerResponse::Ok
+                }
+                Err(e) => ManagerResponse::Err {
+                    message: format!("{e:#}"),
+                },
+            }
+        }
     }
 }