docs(coding-agent): fix event bus docs - handlers persist, remove redundant note

packages/coding-agent/docs/custom-tools.md

@@ -200,9 +200,7 @@ const unsubscribe = pi.events.on("other:event", (data) => {
 });
 ```
 
-Events are session-scoped. Use namespaced channel names like `"toolname:event"` to avoid collisions.
+Event handlers persist across session switches (registered once at tool load time). Use namespaced channel names like `"toolname:event"` to avoid collisions. Handler errors (sync and async) are caught and logged.
-
-Handler errors (sync and async) are caught and logged.
 
 ### Sending Messages
 

packages/coding-agent/docs/hooks.md

@@ -904,11 +904,7 @@ const unsubscribe = pi.events.on("my:channel", handler);
 unsubscribe();
 ```
 
-Events are session-scoped (cleared when session ends). Channel names are arbitrary strings - use namespaced names like `"toolname:event"` to avoid collisions.
+Event handlers persist across session switches (registered once at hook load time). Channel names are arbitrary strings; use namespaced names like `"toolname:event"` to avoid collisions. Handler errors (sync and async) are caught and logged.
-
-Handler errors (sync and async) are caught and logged.
-
-**Important:** Use `{ triggerTurn: true }` when you want the agent to respond to the event. Without it, the message displays but the agent stays idle.
 
 ## Examples