v0.8.21

docs/API.md

@@ -1,6 +1,6 @@
 # GREE Controller API reference
 
-HTTP and WebSocket API for GREE Controller **0.8.20**.
+HTTP and WebSocket API for GREE Controller **0.8.21**.
 
 [← Main documentation](../README.md)
 
@@ -212,7 +212,7 @@ Response:
 {
   "status": "ok",
   "name": "gree-controller",
-  "version": "0.8.20",
+  "version": "0.8.21",
   "uptime_seconds": 1234,
   "control_ready": true,
   "time": "2026-08-30T06:54:00Z"
@@ -236,7 +236,7 @@ Returns the initial Web UI snapshot:
   "settings": {},
   "outdoor_temperature": null,
   "system": {
-    "version": "0.8.20",
+    "version": "0.8.21",
     "uptime_seconds": 1234,
     "auth_required": false,
     "control_ready": true,
@@ -669,6 +669,8 @@ All fields optional:
 
 A custom setpoint creates the same temporary manual override for every member zone and normally expires at that zone's next schedule boundary. Returns a group control/result object including updated members/state.
 
+Group power is a per-group gate. Whole-house `power=false` closes all group gates. If one group is later switched back on, only that group is reopened; other groups remain off and their own member zones stay disabled. A zone is never blocked merely because a different, unrelated group is on. If a zone belongs to multiple groups, any disabled membership remains authoritative.
+
 ---
 
 ## Whole-house control