diff --git a/custom_components/gree_controller/manifest.json b/custom_components/gree_controller/manifest.json
index 2deec23..d28e5e3 100644
--- a/custom_components/gree_controller/manifest.json
+++ b/custom_components/gree_controller/manifest.json
@@ -1,7 +1,7 @@
 {
   "domain": "gree_controller",
   "name": "GREE Controller",
-  "version": "0.15.8",
+  "version": "0.15.9",
   "config_flow": true,
   "integration_type": "hub",
   "iot_class": "local_polling",
diff --git a/gree-controller/CHANGELOG.md b/gree-controller/CHANGELOG.md
index c35ccfd..d11fb24 100644
--- a/gree-controller/CHANGELOG.md
+++ b/gree-controller/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.15.9
+
+- Visual Flow `on_change` events are now latched while their upstream condition remains true and are acknowledged only after the downstream action executes successfully, so cooldowns, ownership suppression and same-cycle target conflicts no longer silently consume a change event.
+- Rolling mean/median blocks now require one complete configured time window after their runtime window starts or restarts before they can match; unavailable sources reset the rolling window instead of reusing partial history.
+- Thermostat action summaries now show explicit power and HVAC mode alongside the preset/target, so `power=false` is displayed as OFF instead of looking like a preset-only Auto action.
+- The Flow canvas adds drag-box multi-selection, keeps Shift/Ctrl/Cmd additive selection and moves the whole selection together.
+- Selected Flow blocks can be copied/pasted or duplicated with internal connections preserved; Ctrl/Cmd+C, Ctrl/Cmd+V and Ctrl/Cmd+D are supported.
+
 ## 0.15.8
 
 - Visual Flow exports now include the Shared Input definitions referenced by the graph.
diff --git a/gree-controller/README.md b/gree-controller/README.md
index fbd5548..071fc9b 100644
--- a/gree-controller/README.md
+++ b/gree-controller/README.md
@@ -2,7 +2,7 @@
 
 Local GREE HVAC controller packaged as a Home Assistant add-on, with Web UI, HTTP/WebSocket API, built-in Swagger API documentation, UDP discovery/control, `amd64` and `aarch64` support, ingress, and database backup from `/data/gree-controller.db`.
 
-Version 0.15.8 makes Visual Flow exports portable with referenced Shared Inputs and keeps the Interpretation / Flow cycle details collapsed until opened.
+Version 0.15.9 strengthens Visual Flow execution and editing with latched change events, full rolling-stat windows, clearer thermostat action summaries, box selection and multi-block copy/paste/duplicate.
 
 ![Home Assistant OS + GREE + VLAN topology](https://git.linuxiarz.pl/gru/gree-controller-ha-addon/raw/branch/master/gree-controller/topology-ha-vlan-gree-en.png)
 
diff --git a/gree-controller/config.yaml b/gree-controller/config.yaml
index c0fe536..54a3c29 100644
--- a/gree-controller/config.yaml
+++ b/gree-controller/config.yaml
@@ -1,5 +1,5 @@
 name: "GREE Controller"
-version: "0.15.8"
+version: "0.15.9"
 slug: "gree_controller"
 description: "Local GREE HVAC controller with Web UI, API, and Home Assistant integration"
 url: "https://git.linuxiarz.pl/gru/gree-controller-ha-addon/"