fix(ui): enforce save semantics for default and preset chunks

src/static/presets.js

@@ -132,7 +132,7 @@ const sendEspnowMessage = (obj) => {
 
 // Send a select message for a preset to all device names in the current tab.
 // Uses the preset ID as the select key.
-const sendSelectForCurrentTabDevices = (presetId, sectionEl, saveToDevice = true) => {
+const sendSelectForCurrentTabDevices = (presetId, sectionEl) => {
   const section = sectionEl || document.querySelector('.presets-section[data-tab-id]');
   if (!section || !presetId) {
     return;
@@ -155,9 +155,6 @@ const sendSelectForCurrentTabDevices = (presetId, sectionEl, saveToDevice = true
     v: '1',
     select,
   };
-  if (saveToDevice) {
-    message.save = true;
-  }
 
   sendEspnowMessage(message);
 };
@@ -1325,9 +1322,8 @@ document.addEventListener('DOMContentLoaded', () => {
 
 // Build ESPNow messages for a single preset.
 // Send order:
-// 1) preset payload (without save)
-// 2) optional select for device names
-// 3) optional save command
+// 1) preset payload (optionally with save)
+// 2) optional select for device names (never with save)
 // saveToDevice defaults to true.
 const sendPresetViaEspNow = async (presetId, preset, deviceNames, saveToDevice = true, setDefault = false) => {
   try {
@@ -1394,11 +1390,13 @@ const sendDefaultPreset = (presetId, deviceNames) => {
     return;
   }
   // Default should only set startup preset, not trigger live selection.
+  // Save is attached to default messages.
   // When device names are provided, scope the default update to those devices.
   const targets = Array.isArray(deviceNames)
     ? deviceNames.map((n) => (n || '').trim()).filter((n) => n.length > 0)
     : [];
   const message = { v: '1', default: presetId };
+  message.save = true;
   if (targets.length > 0) {
     message.targets = targets;
   }