Defer unknown TUI config fields to the shared strict-config policy (#54766)

## Why

Unknown fields in TUI keymaps and profile TUI settings fail deserialization even when strict config validation is disabled.

## What changed

Remove Serde's `deny_unknown_fields` from these settings so unknown fields are ignored during deserialization and reported by the shared strict-config policy. Keep `schemars(deny_unknown_fields)` so the generated schema continues to disallow unknown fields.

GitOrigin-RevId: 06985161bc3bbb35648712288c1d00bdd50953ba

codex-rs/config/src/profile_toml.rs

@@ -75,7 +75,6 @@ pub struct ConfigProfile {
 
 /// TUI settings supported inside a named profile.
 #[derive(Debug, Clone, Default, PartialEq, Serialize, Deserialize, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct ProfileTui {
     /// Preferred layout for resume/fork session picker results.

codex-rs/config/src/tui_keymap.rs

@@ -6,8 +6,8 @@
 //!
 //! Responsibilities:
 //!
-//! 1. Define strongly typed config contexts/actions with unknown-field
+//! 1. Define strongly typed config contexts/actions. Unknown fields are ignored
-//!    rejection.
+//!    during deserialization and reported by the shared strict-config policy.
 //! 2. Normalize accepted key aliases into canonical names.
 //! 3. Reject malformed bindings early with user-facing diagnostics.
 //!
@@ -131,7 +131,6 @@ impl KeybindingsSpec {
 
 /// Global keybindings. These are used when a context does not define an override.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiGlobalKeymap {
     /// Prefix for persistent, context-aware shortcut menus.
@@ -168,7 +167,6 @@ pub struct TuiGlobalKeymap {
 
 /// Chat context keybindings.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiChatKeymap {
     /// Open saved prompts and slash commands.
@@ -197,7 +195,6 @@ pub struct TuiChatKeymap {
 
 /// Composer context keybindings. These override corresponding `global` actions.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiComposerKeymap {
     /// Submit the current composer draft.
@@ -214,7 +211,6 @@ pub struct TuiComposerKeymap {
 
 /// Editor context keybindings for text editing inside text areas.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiEditorKeymap {
     /// Insert a newline in the editor.
@@ -388,7 +384,6 @@ pub struct TuiVimOperatorKeymap {
 
 /// Search motions shared by Vim normal and operator-pending input.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiVimSearchKeymap {
     /// Search forward in the active buffer (`/`).
@@ -403,7 +398,6 @@ pub struct TuiVimSearchKeymap {
 
 /// Vim text-object keybindings for modal editing inside text areas.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiVimTextObjectKeymap {
     /// Text object: word.
@@ -428,7 +422,6 @@ pub struct TuiVimTextObjectKeymap {
 
 /// Pager context keybindings for transcript and static overlays.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiPagerKeymap {
     /// Scroll up by one row.
@@ -457,7 +450,6 @@ pub struct TuiPagerKeymap {
 
 /// List selection context keybindings for popup-style selectable lists.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiListKeymap {
     /// Move list selection up.
@@ -484,7 +476,6 @@ pub struct TuiListKeymap {
 
 /// Shortcuts specific to the shared agents overview.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiAgentsKeymap {
     /// Open the session resume picker.
@@ -515,7 +506,6 @@ pub struct TuiAgentsKeymap {
 
 /// Approval overlay keybindings.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiApprovalKeymap {
     /// Open the full-screen approval details view.
@@ -547,7 +537,6 @@ pub struct TuiApprovalKeymap {
 /// `RuntimeKeymap` first so precedence, empty-list unbinding, and duplicate-key
 /// validation are applied consistently.
 #[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq, Default, JsonSchema)]
-#[serde(deny_unknown_fields)]
 #[schemars(deny_unknown_fields)]
 pub struct TuiKeymap {
     #[serde(default)]
@@ -767,75 +756,6 @@ mod tests {
     use super::*;
     use pretty_assertions::assert_eq;
 
-    #[test]
-    fn misplaced_action_at_keymap_root_is_rejected() {
-        // Actions placed directly under [tui.keymap] instead of a context
-        // sub-table (e.g. [tui.keymap.global]) must produce a parse error,
-        // not be silently ignored.
-        let toml_input = r#"
-            open_transcript = "ctrl-s"
-        "#;
-        let result = toml::from_str::<TuiKeymap>(toml_input);
-        assert!(
-            result.is_err(),
-            "expected error for action at keymap root, got: {result:?}"
-        );
-    }
-
-    #[test]
-    fn misspelled_action_under_context_is_rejected() {
-        let toml_input = r#"
-            [global]
-            open_transcrip = "ctrl-x"
-        "#;
-        let err = toml::from_str::<TuiKeymap>(toml_input)
-            .expect_err("expected unknown action under context");
-        assert!(
-            err.to_string().contains("open_transcrip"),
-            "expected error to mention misspelled field, got: {err}"
-        );
-    }
-
-    #[test]
-    fn misspelled_vim_text_object_action_is_rejected() {
-        let toml_input = r#"
-            [vim_text_object]
-            double_quotes = "shift-quote"
-        "#;
-        let err = toml::from_str::<TuiKeymap>(toml_input)
-            .expect_err("expected unknown vim text object action");
-        assert!(
-            err.to_string().contains("double_quotes"),
-            "expected error to mention misspelled field, got: {err}"
-        );
-    }
-
-    #[test]
-    fn removed_backtrack_actions_are_rejected() {
-        for (context, action) in [
-            ("global", "edit_previous_message"),
-            ("global", "confirm_edit_previous_message"),
-            ("chat", "edit_previous_message"),
-            ("chat", "confirm_edit_previous_message"),
-            ("pager", "edit_previous_message"),
-            ("pager", "edit_next_message"),
-            ("pager", "confirm_edit_message"),
-        ] {
-            let toml_input = format!(
-                r#"
-                [{context}]
-                {action} = "ctrl-x"
-                "#
-            );
-            let err = toml::from_str::<TuiKeymap>(&toml_input)
-                .expect_err("expected removed backtrack action to be rejected");
-            assert!(
-                err.to_string().contains(action),
-                "expected error to mention removed field {action}, got: {err}"
-            );
-        }
-    }
-
     #[test]
     fn action_under_global_context_is_accepted() {
         let toml_input = r#"

codex-rs/core/src/config/config_tests.rs

@@ -4738,21 +4738,6 @@ async fn legacy_remote_thread_store_endpoint_is_rejected() {
     assert!(err.to_string().contains("no longer supported"));
 }
 
-#[test]
-fn profile_tui_rejects_unsupported_settings() {
-    let err = toml::from_str::<ConfigToml>(
-        r#"profile = "work"
-
-[profiles.work.tui]
-theme = "dark"
-"#,
-    )
-    .expect_err("profile TUI config should only accept supported fields");
-
-    assert!(err.to_string().contains("unknown field"));
-    assert!(err.to_string().contains("theme"));
-}
-
 #[tokio::test]
 async fn runtime_config_resolves_session_picker_view_default_and_override() {
     let cfg = Config::load_from_base_config_with_overrides(