Rename exec_wait tool to wait (#14983)

Summary
- document that code mode only exposes `exec` and the renamed `wait`
tool
- update code mode tool spec and descriptions to match the new tool name
- rename tests and helper references from `exec_wait` to `wait`

Testing
- Not run (not requested)

codex-rs/core/src/features.rs

@@ -87,7 +87,7 @@ pub enum Feature {
     JsRepl,
     /// Enable a minimal JavaScript mode backed by Node's built-in vm runtime.
     CodeMode,
-    /// Restrict model-visible tools to code mode entrypoints (`exec`, `exec_wait`).
+    /// Restrict model-visible tools to code mode entrypoints (`exec`, `wait`).
     CodeModeOnly,
     /// Only expose js_repl tools directly to the model.
     JsReplToolsOnly,

codex-rs/core/src/tools/code_mode/mod.rs

@@ -34,10 +34,11 @@ const CODE_MODE_BRIDGE_SOURCE: &str = include_str!("bridge.js");
 const CODE_MODE_DESCRIPTION_TEMPLATE: &str = include_str!("description.md");
 const CODE_MODE_WAIT_DESCRIPTION_TEMPLATE: &str = include_str!("wait_description.md");
 const CODE_MODE_PRAGMA_PREFIX: &str = "// @exec:";
-const CODE_MODE_ONLY_PREFACE: &str = "Use `exec/exec_wait` tool to run all other tools, do not attempt to use any other tools directly";
+const CODE_MODE_ONLY_PREFACE: &str =
+    "Use `exec/wait` tool to run all other tools, do not attempt to use any other tools directly";
 
 pub(crate) const PUBLIC_TOOL_NAME: &str = "exec";
-pub(crate) const WAIT_TOOL_NAME: &str = "exec_wait";
+pub(crate) const WAIT_TOOL_NAME: &str = "wait";
 
 pub(crate) fn is_code_mode_nested_tool(tool_name: &str) -> bool {
     tool_name != PUBLIC_TOOL_NAME && tool_name != WAIT_TOOL_NAME

codex-rs/core/src/tools/code_mode/wait_description.md

@@ -1,8 +1,8 @@
-- Use `exec_wait` only after `exec` returns `Script running with cell ID ...`.
+- Use `wait` only after `exec` returns `Script running with cell ID ...`.
 - `cell_id` identifies the running `exec` cell to resume.
-- `yield_time_ms` controls how long to wait for more output before yielding again. If omitted, `exec_wait` uses its default wait timeout.
+- `yield_time_ms` controls how long to wait for more output before yielding again. If omitted, `wait` uses its default wait timeout.
 - `max_tokens` limits how much new output this wait call returns.
 - `terminate: true` stops the running cell instead of waiting for more output.
-- `exec_wait` returns only the new output since the last yield, or the final completion or termination result for that cell.
-- If the cell is still running, `exec_wait` may yield again with the same `cell_id`.
-- If the cell has already finished, `exec_wait` returns the completed result and closes the cell.
+- `wait` returns only the new output since the last yield, or the final completion or termination result for that cell.
+- If the cell is still running, `wait` may yield again with the same `cell_id`.
+- If the cell has already finished, `wait` returns the completed result and closes the cell.

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

@@ -772,7 +772,7 @@ fn create_write_stdin_tool() -> ToolSpec {
     })
 }
 
-fn create_exec_wait_tool() -> ToolSpec {
+fn create_wait_tool() -> ToolSpec {
     let properties = BTreeMap::from([
         (
             "cell_id".to_string(),
@@ -2597,7 +2597,7 @@ pub(crate) fn build_specs_with_discoverable_tools(
         builder.register_handler(PUBLIC_TOOL_NAME, code_mode_handler);
         push_tool_spec(
             &mut builder,
-            create_exec_wait_tool(),
+            create_wait_tool(),
             /*supports_parallel_tool_calls*/ false,
             config.code_mode_enabled,
         );

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

@@ -2693,7 +2693,7 @@ fn code_mode_only_restricts_model_tools_to_exec_tools() {
         "gpt-5.1-codex",
         &features,
         Some(WebSearchMode::Live),
-        &["exec", "exec_wait"],
+        &["exec", "wait"],
     );
 }
 
@@ -2724,7 +2724,7 @@ fn code_mode_only_exec_description_includes_full_nested_tool_details() {
     assert!(!description.contains("Enabled nested tools:"));
     assert!(!description.contains("Nested tool reference:"));
     assert!(description.starts_with(
-        "Use `exec/exec_wait` tool to run all other tools, do not attempt to use any other tools directly"
+        "Use `exec/wait` tool to run all other tools, do not attempt to use any other tools directly"
     ));
     assert!(description.contains("### `update_plan` (`update_plan`)"));
     assert!(description.contains("### `view_image` (`view_image`)"));
@@ -2754,7 +2754,7 @@ fn code_mode_exec_description_omits_nested_tool_details_when_not_code_mode_only(
     };
 
     assert!(!description.starts_with(
-        "Use `exec/exec_wait` tool to run all other tools, do not attempt to use any other tools directly"
+        "Use `exec/wait` tool to run all other tools, do not attempt to use any other tools directly"
     ));
     assert!(!description.contains("### `update_plan` (`update_plan`)"));
     assert!(!description.contains("### `view_image` (`view_image`)"));