Merge pull request 'Release 2026.9.23' (#14) from release/2026.9.23 into main

Carries the version string and user-visible string fixes: nothing a user or
operator sees names the upstream project any more.

crates/types/src/branding.rs

@@ -71,7 +71,7 @@ pub fn env_var(name: &str) -> Result<String, std::env::VarError> {
 #[macro_export]
 macro_rules! brand_version {
     () => {
-        "2026.9.22"
+        "2026.9.23"
     };
 }