fix(format): add Standard: Cpp03 and fix nested-template spacing

Add Standard: Cpp03 to .clang-format so nested templates keep '> >'
spacing (not '>>'), which is required for the macOS C++03-compatible
build (clang -std=c++03 rejects '>>' inside template argument lists).

Fix cluster_client.h:43 (m_staged_monitor_commands) to use '> >' and
reformat cluster_client.cpp / cluster_client.h to satisfy the
clang-format check.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: fcostaoliveira

.clang-format

@@ -53,6 +53,10 @@ AllowShortFunctionsOnASingleLine: Inline
 AllowShortIfStatementsOnASingleLine: WithoutElse
 AllowShortLoopsOnASingleLine: false
 
+# C++ standard: keep Cpp03 so nested templates use "> >" (not ">>"),
+# which is required for the macOS C++03-compatible build.
+Standard: Cpp03
+
 # Other
 AlignTrailingComments: true
 AlwaysBreakAfterReturnType: None

cluster_client.cpp

@@ -690,8 +690,7 @@ void cluster_client::process_staged_monitor_command(struct timeval /*timestamp*/
     // format_arbitrary_command mutates arg->data in-place; call it here at drain time
     // (not at staging time) so the RESP framing is applied on the correct connection's protocol.
     if (!m_connections[conn_id]->get_protocol()->format_arbitrary_command(staged.parsed_cmd)) {
-        benchmark_error_log("warning: skipping unformattable staged monitor command at line %zu\n",
-                            staged.source_line);
+        benchmark_error_log("warning: skipping unformattable staged monitor command at line %zu\n", staged.source_line);
         // m_reqs_generated was incremented when this command was staged. Undo it now so
         // a --requests run doesn't hang waiting for a response that will never arrive.
         m_reqs_generated--;
@@ -749,8 +748,7 @@ bool cluster_client::create_monitor_request_cluster(unsigned int command_index,
         if (!key.empty()) {
             uint32_t slot = calc_hslot_crc16_with_hash_tag(key.c_str(), key.size());
             uint32_t shard = m_slot_to_shard[slot];
-            if (shard < m_connections.size() &&
-                m_connections[shard]->get_connection_state() != conn_disconnected &&
+            if (shard < m_connections.size() && m_connections[shard]->get_connection_state() != conn_disconnected &&
                 m_connections[shard]->get_cluster_slots_state() == setup_done) {
                 target_conn = shard;
             }

cluster_client.h

@@ -26,11 +26,12 @@
 
 typedef std::queue<unsigned long long> key_index_pool;
 
-struct staged_monitor_cmd {
+struct staged_monitor_cmd
+{
     arbitrary_command parsed_cmd; // already split (split_command_to_args done); format at drain
     size_t stats_index;
     struct timeval enqueue_time; // latency measured from selection, not drain
-    size_t source_line;         // original monitor file line (1-based) for error messages
+    size_t source_line;          // original monitor file line (1-based) for error messages
 };
 
 // forward decleration
@@ -40,7 +41,7 @@ class cluster_client : public client
 {
 protected:
     std::vector<key_index_pool *> m_key_index_pools;
-    std::vector<std::queue<staged_monitor_cmd>> m_staged_monitor_commands;
+    std::vector<std::queue<staged_monitor_cmd> > m_staged_monitor_commands;
     unsigned int m_slot_to_shard[16384];
     // --transaction: shard connection that owns the in-flight rotation of
     // --command entries. -1 = no pin (rotation has not started or just ended).