Refactored the scheduler and source interfaces to accommondate both polling (e.g., HTTP) sources and streaming (e.g., message queue) sources.

sources/source.go

@@ -6,6 +6,12 @@ import (
 	"gitea.maximumdirect.net/ejr/feedkit/event"
 )
 
+// Input is the common surface shared by all source types.
+type Input interface {
+	Name() string
+	Kind() event.Kind
+}
+
 // Source is a configured polling job that emits 0..N events per poll.
 //
 // Source implementations live in domain modules (weatherfeeder/newsfeeder/...)
@@ -28,3 +34,12 @@ type Source interface {
 	// Implementations should honor ctx.Done() for network calls and other I/O.
 	Poll(ctx context.Context) ([]event.Event, error)
 }
+
+// StreamSource is an event-driven source (NATS/RabbitMQ/MQTT/etc).
+//
+// Run should block, producing events into `out` until ctx is cancelled or a fatal error occurs.
+// It MUST NOT close out (the scheduler/daemon owns the bus).
+type StreamSource interface {
+	Input
+	Run(ctx context.Context, out chan<- event.Event) error
+}