diff --git a/config/dot/quickshell/services/HomeAssistant.qml b/config/dot/quickshell/services/HomeAssistant.qml
index 4a21782..f7e0eea 100644
--- a/config/dot/quickshell/services/HomeAssistant.qml
+++ b/config/dot/quickshell/services/HomeAssistant.qml
@@ -168,6 +168,8 @@ Singleton {
     }
 
     function enqueueAction(action: var): void {
+        if (root.fixtureTransitionDraining)
+            return;
         if (!action || (action.kind !== "toggle" && action.kind !== "brightness"))
             return;
         if (typeof action.entityId !== "string" || action.entityId === "" || root.isBusy(action.entityId))
diff --git a/config/dot/quickshell/shell.qml b/config/dot/quickshell/shell.qml
index 2e3f175..e17c1ed 100644
--- a/config/dot/quickshell/shell.qml
+++ b/config/dot/quickshell/shell.qml
@@ -276,6 +276,9 @@ ShellRoot {
                 entityErrors: HomeAssistant.entityErrors,
                 actionProcessRunning: HomeAssistant.actionProcessRunning,
                 actionStreamFinished: HomeAssistant.actionStreamFinished,
+                fixtureTransitionDraining: HomeAssistant.fixtureTransitionDraining,
+                queuedActionCount: HomeAssistant.actionQueue.length,
+                actionActive: HomeAssistant.activeAction !== null,
                 lastError: HomeAssistant.lastError
             });
         }
diff --git a/tests/quickshell/control-center-services-contract.sh b/tests/quickshell/control-center-services-contract.sh
index 8355574..9e108d4 100755
--- a/tests/quickshell/control-center-services-contract.sh
+++ b/tests/quickshell/control-center-services-contract.sh
@@ -3,10 +3,30 @@
 set -euo pipefail
 
 repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
-config_path="$repo_dir/config/dot/quickshell"
 state_home="$(mktemp -d /tmp/panama-control-center-state.XXXXXX)"
+source_config_path="$repo_dir/config/dot/quickshell"
+config_path="$state_home/quickshell"
+helper_log="$state_home/home-helper.log"
 shell_log="$state_home/quickshell.log"
 
+: >"$helper_log"
+cp -a "$source_config_path" "$config_path"
+cat >"$config_path/scripts/panama-home-assistant" <<'EOF'
+#!/usr/bin/env bash
+set -euo pipefail
+
+printf '%s\n' "$*" >>"$PANAMA_HOME_HELPER_LOG"
+case "${1:-}" in
+    catalog)
+        printf '%s\n' '{"ok":false,"error":"test-helper"}'
+        ;;
+    toggle|brightness)
+        printf '%s\n' '{"ok":true}'
+        ;;
+esac
+EOF
+chmod +x "$config_path/scripts/panama-home-assistant"
+
 fail() {
     printf 'Control Center services contract: %s\n' "$1" >&2
     exit 1
@@ -14,6 +34,7 @@ fail() {
 
 qs_for_test() {
     QS_CONFIG_PATH="$config_path" XDG_STATE_HOME="$state_home" \
+        PANAMA_HOME_HELPER_LOG="$helper_log" \
         qs -p "$config_path" "$@"
 }
 
@@ -220,12 +241,39 @@ wait_for_home_status '
 qs_for_test ipc call home-assistant fixture process-no-output >/dev/null
 qs_for_test ipc call home-assistant fixture process-slow-actions >/dev/null
 qs_for_test ipc call home-assistant brightness light.fixture_desk 57 >/dev/null
-wait_for_home_status '
-    .phase == "ready" and
+jq -e '
+    .fixture == true and
+    .fixtureTransitionDraining == true and
     .busy == false and
     .busyEntityIds == [] and
     .pendingBrightness == {} and
     .entityErrors == {} and
+    .queuedActionCount == 0 and
+    .actionActive == false and
+    .actionProcessRunning == false and
+    (.entities[] |
+        select(.id == "light.fixture_desk") |
+        .active == true and .brightnessPct == 24)
+' <<<"$(qs_for_test ipc call home-assistant status)" >/dev/null \
+    || fail 'nested fixture transition accepted an action during its drain'
+wait_for_home_status '
+    .fixture == true and
+    .fixtureTransitionDraining == false and
+    .busy == false and
+    .queuedActionCount == 0 and
+    .actionActive == false and
+    .actionProcessRunning == false
+' 'nested fixture transition did not install the latest stable fixture'
+qs_for_test ipc call home-assistant brightness light.fixture_desk 57 >/dev/null
+wait_for_home_status '
+    .phase == "ready" and
+    .fixtureTransitionDraining == false and
+    .busy == false and
+    .busyEntityIds == [] and
+    .pendingBrightness == {} and
+    .entityErrors == {} and
+    .queuedActionCount == 0 and
+    .actionActive == false and
     (.entities[] |
         select(.id == "light.fixture_living") |
         .active == false and .brightnessPct == 36) and
@@ -234,6 +282,45 @@ wait_for_home_status '
         .active == true and .brightnessPct == 57)
 ' 'nested fixture transitions released the drain or corrupted the latest action'
 
+qs_for_test ipc call home-assistant fixture process-delayed-exit >/dev/null
+qs_for_test ipc call home-assistant brightness light.fixture_living 88 >/dev/null
+wait_for_home_status '
+    .fixture == true and
+    .busyEntityIds == ["light.fixture_living"] and
+    .pendingBrightness["light.fixture_living"] == 88 and
+    .actionProcessRunning == false and
+    .actionStreamFinished == true
+' 'reset-to-live setup did not reach its process drain window'
+qs_for_test ipc call home-assistant reset >/dev/null
+qs_for_test ipc call home-assistant toggle light.fixture_hall >/dev/null
+qs_for_test ipc call home-assistant brightness light.fixture_living 63 >/dev/null
+jq -e '
+    .fixture == true and
+    .fixtureTransitionDraining == true and
+    .busy == false and
+    .busyEntityIds == [] and
+    .pendingBrightness == {} and
+    .entityErrors == {} and
+    .queuedActionCount == 0 and
+    .actionActive == false and
+    .actionProcessRunning == false
+' <<<"$(qs_for_test ipc call home-assistant status)" >/dev/null \
+    || fail 'reset-to-live drain accepted an action from the old fixture'
+wait_for_home_status '
+    .fixture == false and
+    .fixtureTransitionDraining == false and
+    .busy == false and
+    .busyEntityIds == [] and
+    .pendingBrightness == {} and
+    .entityErrors == {} and
+    .queuedActionCount == 0 and
+    .actionActive == false and
+    .actionProcessRunning == false
+' 'reset-to-live left stale fixture action state or started a replacement process'
+if rg '^(toggle|brightness)( |$)' "$helper_log" >&2; then
+    fail 'reset-to-live issued a stale fixture action to the live helper'
+fi
+
 qs_for_test ipc call home-assistant fixture missing-selected >/dev/null
 jq -e '
     .fixture == true and