revert /name for now (#4978)

There was a regression where we'd read entire rollout contents if there
was no /name present.

codex-rs/tui/src/slash_command.rs

@@ -15,7 +15,6 @@ pub enum SlashCommand {
     Model,
     Approvals,
     Review,
-    Name,
     New,
     Init,
     Compact,
@@ -34,7 +33,6 @@ impl SlashCommand {
     /// User-visible description shown in the popup.
     pub fn description(self) -> &'static str {
         match self {
-            SlashCommand::Name => "set a name for this chat",
             SlashCommand::New => "start a new chat during a conversation",
             SlashCommand::Init => "create an AGENTS.md file with instructions for Codex",
             SlashCommand::Compact => "summarize conversation to prevent hitting the context limit",
@@ -62,8 +60,6 @@ impl SlashCommand {
     /// Whether this command can be run while a task is in progress.
     pub fn available_during_task(self) -> bool {
         match self {
-            // Naming is a local UI action; allow during tasks.
-            SlashCommand::Name => true,
             SlashCommand::New
             | SlashCommand::Init
             | SlashCommand::Compact