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

crates/application/src/channels/commands.rs

@@ -3,20 +3,16 @@ use uuid::Uuid;
 use domain::models::ScheduleConfig;
 use domain::value_objects::RecyclePolicy;
 
-/// Create a new channel.
 pub struct CreateChannelCommand {
     pub owner_id: Uuid,
     pub name: String,
     pub timezone: String,
 }
 
-/// Update an existing channel (partial — only `Some` fields are applied).
 pub struct UpdateChannelCommand {
     pub channel_id: Uuid,
-    /// Used for ownership check.
     pub owner_id: Uuid,
     pub name: Option<String>,
-    /// `Some(None)` clears the description; `None` leaves it unchanged.
     pub description: Option<Option<String>>,
     pub timezone: Option<String>,
     pub schedule_config: Option<ScheduleConfig>,
@@ -24,9 +20,7 @@ pub struct UpdateChannelCommand {
     pub auto_schedule: Option<bool>,
 }
 
-/// Delete a channel.
 pub struct DeleteChannelCommand {
     pub channel_id: Uuid,
-    /// Used for ownership check.
     pub owner_id: Uuid,
 }