style: Migrate to stable-only rustfmt configuration

- Remove nightly-only features from .rustfmt.toml and vendor/ss58-registry/rustfmt.toml
- Removed features: imports_granularity, wrap_comments, comment_width,
  reorder_impl_items, spaces_around_ranges, binop_separator,
  match_arm_blocks, trailing_semicolon, trailing_comma
- Format all 898 affected files with stable rustfmt
- Ensures long-term reliability without nightly toolchain dependency

pezcumulus/test/service/src/cli.rs

@@ -328,10 +328,11 @@ impl BizinikiwiCli for TestCollatorCli {
 					2500,
 				)))) as Box<_>
 			},
-			"relay-parent-offset" =>
+			"relay-parent-offset" => {
 				Box::new(pezcumulus_test_service::get_relay_parent_offset_chain_spec(Some(
 					ParaId::from(2600),
-				))) as Box<_>,
+				))) as Box<_>
+			},
 			path => {
 				let chain_spec: pezsc_chain_spec::GenericChainSpec =
 					pezsc_chain_spec::GenericChainSpec::from_json_file(path.into())?;

pezcumulus/test/service/src/lib.rs

@@ -273,7 +273,7 @@ async fn build_relay_chain_interface(
 			Some("Relaychain"),
 		)
 		.map_err(|e| RelayChainError::Application(Box::new(e) as Box<_>))?,
-		pezcumulus_client_cli::RelayChainMode::ExternalRpc(rpc_target_urls) =>
+		pezcumulus_client_cli::RelayChainMode::ExternalRpc(rpc_target_urls) => {
 			return build_minimal_relay_chain_node_with_rpc(
 				relay_chain_config,
 				teyrchain_prometheus_registry,
@@ -281,7 +281,8 @@ async fn build_relay_chain_interface(
 				rpc_target_urls,
 			)
 			.await
-			.map(|r| r.0),
+			.map(|r| r.0)
+		},
 	};
 
 	task_manager.add_child(relay_chain_node.task_manager);
@@ -716,7 +717,7 @@ impl TestNodeBuilder {
 
 		let (task_manager, client, network, rpc_handlers, transaction_pool, backend) =
 			match relay_chain_config.network.network_backend {
-				pezsc_network::config::NetworkBackendType::Libp2p =>
+				pezsc_network::config::NetworkBackendType::Libp2p => {
 					start_node_impl::<_, pezsc_network::NetworkWorker<_, _>>(
 						teyrchain_config,
 						self.collator_key,
@@ -729,8 +730,9 @@ impl TestNodeBuilder {
 						false,
 					)
 					.await
-					.expect("could not create Pezcumulus test service"),
-				pezsc_network::config::NetworkBackendType::Litep2p =>
+					.expect("could not create Pezcumulus test service")
+				},
+				pezsc_network::config::NetworkBackendType::Litep2p => {
 					start_node_impl::<_, pezsc_network::Litep2pNetworkBackend>(
 						teyrchain_config,
 						self.collator_key,
@@ -743,7 +745,8 @@ impl TestNodeBuilder {
 						false,
 					)
 					.await
-					.expect("could not create Pezcumulus test service"),
+					.expect("could not create Pezcumulus test service")
+				},
 			};
 		let peer_id = network.local_peer_id();
 		let multiaddr = pezkuwi_test_service::get_listen_address(network.clone()).await;

pezcumulus/test/service/src/main.rs

@@ -100,7 +100,7 @@ fn main() -> Result<(), pezsc_cli::Error> {
 			let (mut task_manager, _, _, _, _, _) = tokio_runtime
 				.block_on(async move {
 					match relay_chain_config.network.network_backend {
-						pezsc_network::config::NetworkBackendType::Libp2p =>
+						pezsc_network::config::NetworkBackendType::Libp2p => {
 							pezcumulus_test_service::start_node_impl::<
 								_,
 								pezsc_network::NetworkWorker<_, _>,
@@ -115,8 +115,9 @@ fn main() -> Result<(), pezsc_cli::Error> {
 								true,
 								use_slot_based_collator,
 							)
-							.await,
-						pezsc_network::config::NetworkBackendType::Litep2p =>
+							.await
+						},
+						pezsc_network::config::NetworkBackendType::Litep2p => {
 							pezcumulus_test_service::start_node_impl::<
 								_,
 								pezsc_network::Litep2pNetworkBackend,
@@ -131,7 +132,8 @@ fn main() -> Result<(), pezsc_cli::Error> {
 								true,
 								use_slot_based_collator,
 							)
-							.await,
+							.await
+						},
 					}
 				})
 				.expect("could not create Pezcumulus test service");