Keep gpt-5.1-codex the default (#6922)

Author: pakrym-oai

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

@@ -61,12 +61,9 @@ pub mod edit;
 pub mod profile;
 pub mod types;
 
-#[cfg(target_os = "windows")]
-pub const OPENAI_DEFAULT_MODEL: &str = "gpt-5.1-codex-max";
-#[cfg(not(target_os = "windows"))]
-pub const OPENAI_DEFAULT_MODEL: &str = "gpt-5.1-codex-max";
-const OPENAI_DEFAULT_REVIEW_MODEL: &str = "gpt-5.1-codex-max";
-pub const GPT_5_CODEX_MEDIUM_MODEL: &str = "gpt-5.1-codex-max";
+pub const OPENAI_DEFAULT_MODEL: &str = "gpt-5.1-codex";
+const OPENAI_DEFAULT_REVIEW_MODEL: &str = "gpt-5.1-codex";
+pub const GPT_5_CODEX_MEDIUM_MODEL: &str = "gpt-5.1-codex";
 
 /// Maximum number of bytes of the documentation that will be embedded. Larger
 /// files are *silently truncated* to this size so we do not take up too much of