move live source ownership to accounts

apps/server-rust/src/live/supervisor.rs

@@ -1,4 +1,4 @@
-//! Per-source task ownership, restart and cancellation.
+//! Per-account source task ownership, restart and cancellation.
 //!
 //! The supervisor guarantees at most one provider generation for a source ID.
 //! Reconfiguration cancels the old task before a replacement starts, preventing
@@ -27,7 +27,7 @@ struct RunningSource {
     status: watch::Receiver<SourceStatus>,
 }
 
-/// Owns exactly one provider task per account/source. Restart always cancels
+/// Owns exactly one provider task per account. Restart always cancels
 /// the prior generation before starting another, which prevents the duplicate
 /// listeners produced by the legacy `/reconnect` handler.
 #[derive(Clone)]