refactor(application): strip comments, DRY ownership check + parse_content_type

crates/application/src/config_snapshots/save.rs

@@ -5,9 +5,6 @@ use domain::{DomainError, DomainResult};
 use super::commands::SaveSnapshotCommand;
 use super::deps::ConfigSnapshotDeps;
 
-/// Save a snapshot of the channel's current schedule config.
-///
-/// Flow: find channel -> snapshot its current config -> return snapshot.
 pub async fn execute(
     deps: &ConfigSnapshotDeps,
     cmd: SaveSnapshotCommand,