caribou (#8265)

Welcome caribou

<img width="1536" height="1024" alt="image"
src="https://github.com/user-attachments/assets/2a67b21f-40cf-4518-aee4-691af331ab50"
/>

codex-rs/tui2/src/chatwidget/snapshots/codex_tui2__chatwidget__tests__model_selection_popup.snap

@@ -5,8 +5,8 @@ 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-max (default)  Latest Codex-optimized flagship for deep and
-                                  fast reasoning.
+› 1. gpt-5.1-codex-max (default)  Codex-optimized flagship for deep and fast
+                                  reasoning.
   2. gpt-5.1-codex-mini           Optimized for codex. Cheaper, faster, but
                                   less capable.
   3. gpt-5.2                      Latest frontier model with improvements

codex-rs/tui2/src/model_migration.rs

@@ -355,7 +355,7 @@ mod tests {
                 "gpt-5.1-codex-mini",
                 "gpt-5.1-codex-max",
                 "gpt-5.1-codex-max".to_string(),
-                Some("Latest Codex-optimized flagship for deep and fast reasoning.".to_string()),
+                Some("Codex-optimized flagship for deep and fast reasoning.".to_string()),
                 true,
             ),
         );
@@ -405,7 +405,7 @@ mod tests {
                 "gpt-5-codex",
                 "gpt-5.1-codex-max",
                 "gpt-5.1-codex-max".to_string(),
-                Some("Latest Codex-optimized flagship for deep and fast reasoning.".to_string()),
+                Some("Codex-optimized flagship for deep and fast reasoning.".to_string()),
                 false,
             ),
         );

codex-rs/tui2/src/snapshots/codex_tui2__model_migration__tests__model_migration_prompt.snap

@@ -2,13 +2,13 @@
 source: tui2/src/model_migration.rs
 expression: terminal.backend()
 ---
+
 > Try gpt-5.1-codex-max
 
   We recommend switching from gpt-5.1-codex-mini to
   gpt-5.1-codex-max.
 
-  Latest Codex-optimized flagship for deep and fast
-  reasoning.
+  Codex-optimized flagship for deep and fast reasoning.
 
   You can continue using gpt-5.1-codex-mini if you prefer.
 

codex-rs/tui2/src/snapshots/codex_tui2__model_migration__tests__model_migration_prompt_gpt5_codex.snap

@@ -2,12 +2,12 @@
 source: tui2/src/model_migration.rs
 expression: terminal.backend()
 ---
+
 > Try gpt-5.1-codex-max
 
   We recommend switching from gpt-5-codex to
   gpt-5.1-codex-max.
 
-  Latest Codex-optimized flagship for deep and fast
-  reasoning.
+  Codex-optimized flagship for deep and fast reasoning.
 
   Press enter to continue