Add launcher shape setting

server.js

@@ -337,10 +337,11 @@ function defaultSettings() {
     desktop: { side: "right", bottomPx: 22, sideOffsetPx: 22, widthPx: 370 },
     mobile: { side: "right", bottomPx: 14, sideOffsetPx: 12, widthPx: 340 },
     launcherEffects: {
+      shape: "bubble",
       breathe: true,
       ring: true,
       hoverLabel: true,
-      avatar: true
+      avatar: false
     },
     notifications: {
       pulseOnAdminReply: true,
@@ -2051,6 +2052,7 @@ function formatSite(site) {
   const settings = parseJson(site.settings_json, defaultSettings());
   settings.notifications = { ...defaultSettings().notifications, ...(settings.notifications || {}) };
   settings.launcherEffects = { ...defaultSettings().launcherEffects, ...(settings.launcherEffects || {}) };
+  settings.launcherEffects.shape = normalizeLauncherShape(settings.launcherEffects.shape);
   settings.widgetLanguage = normalizeWidgetLanguageSettings(settings.widgetLanguage);
   settings.widgetCopy = normalizeWidgetCopy(settings.widgetCopy || {}, settings);
   syncLegacyWidgetCopy(settings);
@@ -2077,6 +2079,10 @@ function formatSite(site) {
   };
 }
 
+function normalizeLauncherShape(value) {
+  return ["circle", "bubble", "messenger", "whatsapp"].includes(value) ? value : "bubble";
+}
+
 function snippetFor(site) {
   const settings = parseJson(site.settings_json, defaultSettings());
   const languageSettings = normalizeWidgetLanguageSettings(settings.widgetLanguage);