Merge branch 'main' into jif/enable-parallel-tc

codex-rs/core/src/model_family.rs

@@ -160,6 +160,7 @@ pub fn find_family_for_model(slug: &str) -> Option<ModelFamily> {
             slug, "gpt-5",
             supports_reasoning_summaries: true,
             needs_special_apply_patch_instructions: true,
+            supports_parallel_tool_calls: true,
         )
     } else {
         None

codex-rs/core/src/tools/spec.rs

@@ -890,17 +890,17 @@ pub(crate) fn build_specs(
         || matches!(config.shell_type, ConfigShellToolType::Streamable);
 
     if use_unified_exec {
-        builder.push_spec(create_exec_command_tool());
-        builder.push_spec(create_write_stdin_tool());
+        builder.push_spec_with_parallel_support(create_exec_command_tool(), true);
+        builder.push_spec_with_parallel_support(create_write_stdin_tool(), true);
         builder.register_handler("exec_command", unified_exec_handler.clone());
         builder.register_handler("write_stdin", unified_exec_handler);
     }
     match &config.shell_type {
         ConfigShellToolType::Default => {
-            builder.push_spec(create_shell_tool());
+            builder.push_spec_with_parallel_support(create_shell_tool(), true);
         }
         ConfigShellToolType::Local => {
-            builder.push_spec(ToolSpec::LocalShell {});
+            builder.push_spec_with_parallel_support(ToolSpec::LocalShell {}, true);
         }
         ConfigShellToolType::Streamable => {
             // Already handled by use_unified_exec.