diff --git a/apps/desktop/src/plugins/hermes-bots/bot-state.ts b/apps/desktop/src/plugins/hermes-bots/bot-state.ts
index a478189ff8..a3000c4a0e 100644
--- a/apps/desktop/src/plugins/hermes-bots/bot-state.ts
+++ b/apps/desktop/src/plugins/hermes-bots/bot-state.ts
@@ -23,7 +23,7 @@ export const rosterWatermarks = new Map<string, number>()
 // sessions are room plumbing — neither is a scratch conversation, and a
 // 6-member room would otherwise dump six identical "Group: ..." rows into
 // recents. Backed by the core generic `hidden` session flag (session.create
-// hidden:true / session.set_hidden). Older gateways ignore the flag and the
+// hidden:true / REST PATCH /api/sessions/{id}). Older gateways ignore the flag and the
 // sessions simply stay visible there.
 
 /** Bot the Routines tile is scoped to. Follows the live gateway profile
diff --git a/apps/desktop/src/plugins/hermes-bots/session-sweep.ts b/apps/desktop/src/plugins/hermes-bots/session-sweep.ts
index 0f032bc5e7..7f29f0ab1a 100644
--- a/apps/desktop/src/plugins/hermes-bots/session-sweep.ts
+++ b/apps/desktop/src/plugins/hermes-bots/session-sweep.ts
@@ -24,8 +24,9 @@ interface HideSweepContext {
 /** One-time reconciliation: Bot Mode sessions are always hidden, but rooms
  *  and Bot Chats created before this policy (or while the old pref was off)
  *  left visible rows behind. On every plugin load, sweep the session ids we
- *  own by id (each group room's member sessions) through the core
- *  session.set_hidden RPC, then run the TITLE-based ownership sweep for
+ *  own by id (each group room's member sessions) through the source
+ *  primary's REST PATCH /api/sessions/{id} (a 404 prunes the seat), then
+ *  run the TITLE-based ownership sweep for
  *  everything else — canonical Bot Chats are identified by name (the
  *  registry row titled "Bot Chat"), so the title sweep is what hides them;
  *  no stored-id pointer is consulted. Idempotent (the DB setter is a no-op