rename worker to actor

interfaces/websocket/server/docs/webhooks.md

@@ -30,7 +30,7 @@ graph TB
     
     subgraph "Backend"
         L[Redis]
-        M[Rhai Worker]
+        M[Rhai Actor]
     end
     
     A --> |POST /webhooks/stripe/{circle_pk}| E
@@ -94,7 +94,7 @@ sequenceDiagram
     participant WV as Webhook Verifier
     participant SD as Script Supervisor
     participant RC as RhaiSupervisor
-    participant RW as Rhai Worker
+    participant RW as Rhai Actor
 
     WS->>CS: POST /webhooks/stripe/{circle_pk}
     CS->>CS: Extract circle_pk from URL