fix(cli): keep provider-owned sessions through implicit expiry

docs/concepts/session.md

@@ -69,6 +69,10 @@ Sessions are reused until they expire:
 
 When both daily and idle resets are configured, whichever expires first wins.
 
+Sessions with an active provider-owned CLI session are not cut by the implicit
+daily default. Use `/reset` or configure `session.reset` explicitly when those
+sessions should expire on a timer.
+
 ## Where state lives
 
 All session state is owned by the **gateway**. UI clients query the gateway for

docs/gateway/cli-backends.md

@@ -185,6 +185,9 @@ child process environment for the run.
   follow-up turns reuse the live Claude process while it is active. If the
   Gateway restarts or the idle process exits, OpenClaw resumes from the stored
   Claude session id.
+- Stored CLI sessions are provider-owned continuity. The implicit daily session
+  reset does not cut them; `/reset` and explicit `session.reset` policies still
+  do.
 
 Serialization notes: