Migrate codex max (#7566)

- make codex max the default
- fix: we were doing some async work in sync function which caused tui
to panic

codex-rs/tui/src/app.rs

@@ -63,7 +63,7 @@ use tokio::sync::mpsc::unbounded_channel;
 use crate::history_cell::UpdateAvailableHistoryCell;
 
 const GPT_5_1_MIGRATION_AUTH_MODES: [AuthMode; 2] = [AuthMode::ChatGPT, AuthMode::ApiKey];
-const GPT_5_1_CODEX_MIGRATION_AUTH_MODES: [AuthMode; 1] = [AuthMode::ChatGPT];
+const GPT_5_1_CODEX_MIGRATION_AUTH_MODES: [AuthMode; 2] = [AuthMode::ChatGPT, AuthMode::ApiKey];
 
 #[derive(Debug, Clone)]
 pub struct AppExitInfo {
@@ -1438,7 +1438,7 @@ mod tests {
             Some(AuthMode::ChatGPT),
             HIDE_GPT_5_1_CODEX_MAX_MIGRATION_PROMPT_CONFIG,
         ));
-        assert!(!migration_prompt_allows_auth_mode(
+        assert!(migration_prompt_allows_auth_mode(
             Some(AuthMode::ApiKey),
             HIDE_GPT_5_1_CODEX_MAX_MIGRATION_PROMPT_CONFIG,
         ));

codex-rs/tui/src/chatwidget.rs

@@ -2031,7 +2031,7 @@ impl ChatWidget {
     }
 
     fn lower_cost_preset(&self) -> Option<ModelPreset> {
-        let models = self.models_manager.available_models.blocking_read();
+        let models = self.models_manager.available_models.try_read().ok()?;
         models
             .iter()
             .find(|preset| preset.model == NUDGE_MODEL_SLUG)
@@ -2138,13 +2138,17 @@ impl ChatWidget {
     /// a second popup is shown to choose the reasoning effort.
     pub(crate) fn open_model_popup(&mut self) {
         let current_model = self.config.model.clone();
-        let presets: Vec<ModelPreset> = self
-            .models_manager
-            .available_models
-            .blocking_read()
-            .iter()
-            .cloned()
-            .collect();
+        let presets: Vec<ModelPreset> =
+            // todo(aibrahim): make this async function
+            if let Ok(models) = self.models_manager.available_models.try_read() {
+                models.clone()
+            } else {
+                self.add_info_message(
+                    "Models are being updated; please try /model again in a moment.".to_string(),
+                    None,
+                );
+                return;
+            };
 
         let mut items: Vec<SelectionItem> = Vec::new();
         for preset in presets.into_iter() {

codex-rs/tui/src/chatwidget/snapshots/codex_tui__chatwidget__tests__model_selection_popup.snap

@@ -5,9 +5,11 @@ expression: popup
   Select Model and Effort
   Access legacy models by running codex -m <model_name> or in your config.toml
 
-› 1. gpt-5.1-codex       Optimized for codex.
-  2. gpt-5.1-codex-mini  Optimized for codex. Cheaper, faster, but less
+› 1. gpt-5.1-codex-max   Latest Codex-optimized flagship for deep and fast
+                         reasoning.
+  2. gpt-5.1-codex       Optimized for codex.
+  3. gpt-5.1-codex-mini  Optimized for codex. Cheaper, faster, but less
                          capable.
-  3. gpt-5.1             Broad world knowledge with strong general reasoning.
+  4. gpt-5.1             Broad world knowledge with strong general reasoning.
 
   Press enter to select reasoning effort, or esc to dismiss.