Keep the upstream project's name out of user-visible strings

The first-party application descriptions and the telemetry service name and
instrumentation scope are shown to operators, and the unpacked-application
temp directory carried the name too.

Left alone deliberately: the OAuth key-derivation contexts (renaming them
would invalidate every sealed token and client id), the migration defaults
that read an upstream installation, links to upstream's upgrade guide, the
wire-protocol identifiers, and upstream's own license and templates.

crates/common/src/manager/application.rs

@@ -522,7 +522,7 @@ mod tests {
     }
 
     async fn fixture(name: &str, client_id: Option<&str>) -> (WebApplications, TempDir) {
-        let dir = TempDir::new(std::env::temp_dir().join(format!("stalwart-app-{name}")));
+        let dir = TempDir::new(std::env::temp_dir().join(format!("inbuxa-app-{name}")));
         dir.clean().await.unwrap();
         tokio::fs::write(dir.path.join("index.html"), INDEX)
             .await