fix(openai): keep Codex wire OS exact

Co-authored-by: Codex <noreply@openai.com>

backend/crates/providers/openai/src/admin.rs

@@ -202,7 +202,7 @@ impl ProviderAdmin for OpenAiAdminProvider {
             version: profile.codex_version,
             build: None,
             target: DashboardWireTarget {
-                os_type: dashboard_os_type(&profile.os_type),
+                os_type: profile.os_type,
                 os_version: profile.os_version,
                 arch: profile.arch,
                 terminal: profile.terminal,
@@ -695,13 +695,6 @@ fn account_from_record(account: &AccountRecord) -> Result<ProviderAccount, Provi
     ))
 }
 
-fn dashboard_os_type(os_type: &str) -> String {
-    match os_type {
-        "Mac OS" => "macOS".to_owned(),
-        _ => os_type.to_owned(),
-    }
-}
-
 fn dashboard_desktop_release(
     profile: &CodexWireProfile,
     snapshot: CodexDesktopReleaseSnapshot,

backend/crates/providers/openai/src/config.rs

@@ -356,7 +356,7 @@ impl From<CodexWireProfileConfig> for CodexWireProfile {
             codex_version: value.codex_version,
             desktop_version: value.desktop_version,
             desktop_build: value.desktop_build,
-            os_type: canonical_codex_os_type(value.os_type),
+            os_type: value.os_type,
             os_version: value.os_version,
             arch: value.arch,
             terminal: value.terminal,
@@ -365,13 +365,6 @@ impl From<CodexWireProfileConfig> for CodexWireProfile {
     }
 }
 
-fn canonical_codex_os_type(os_type: String) -> String {
-    match os_type.as_str() {
-        "macOS" => "Mac OS".to_owned(),
-        _ => os_type,
-    }
-}
-
 #[derive(Debug, Clone, PartialEq, Eq, thiserror::Error)]
 pub enum OpenAiConfigError {
     #[error("OpenAI configuration field is invalid: {0}")]

backend/crates/providers/openai/tests/admin.rs

@@ -119,7 +119,7 @@ async fn openai_admin_provider_exposes_live_wire_profile_and_validated_billing()
     let profile = admin.dashboard_wire_profile().expect("wire profile");
     assert_eq!(profile.version, "0.102.0");
     assert_eq!(profile.build, None);
-    assert_eq!(profile.target.os_type, "macOS");
+    assert_eq!(profile.target.os_type, "Mac OS");
     assert_eq!(profile.target.os_version, "15.5.0");
     assert_eq!(
         profile.user_agent,
@@ -795,7 +795,7 @@ fn valid_config() -> TestOpenAiConfig {
         codex_version: "0.102.0".to_owned(),
         desktop_version: "1.2026.190".to_owned(),
         desktop_build: "19012345678".to_owned(),
-        os_type: "macOS".to_owned(),
+        os_type: "Mac OS".to_owned(),
         os_version: "15.5.0".to_owned(),
         arch: "arm64".to_owned(),
         terminal: "xterm-256color".to_owned(),

backend/crates/providers/openai/tests/config.rs

@@ -137,7 +137,7 @@ fn valid_config() -> OpenAiConfig {
         codex_version: "0.102.0".to_owned(),
         desktop_version: "1.2026.190".to_owned(),
         desktop_build: "19012345678".to_owned(),
-        os_type: "macOS".to_owned(),
+        os_type: "Mac OS".to_owned(),
         os_version: "15.5.0".to_owned(),
         arch: "arm64".to_owned(),
         terminal: "xterm-256color".to_owned(),