feat(ui): simplify family UI - hide advanced settings/apps, sane defaults

Hide from Settings: Bluetooth, Development, MCP Screen, Power,
Region & Language, Time & Date (APP_MANIFEST_FLAG_HIDDEN).

Hide from Apps list: App Hub, Chat, I2C Scanner, Notes,
Screenshot, System Info, Web Server.

Defaults: MCP on, WebServer on, America/New_York timezone,
12-hour time format.

Tactility/Source/settings/time.cpp

@@ -75,7 +75,7 @@ std::string getTimeZoneName() {
             }
         }
     }
-    return "Europe/Amsterdam";
+    return "America/New_York";
 }
 
 bool hasTimeZone() {
@@ -105,13 +105,13 @@ std::string getTimeZoneCode() {
             }
         }
     }
-    return "CET-1CEST,M3.5.0,M10.5.0/3";  // Default: Europe/Amsterdam
+    return "EST5EDT,M3.2.0,M11.1.0";  // Default: America/New_York
 }
 
 bool isTimeFormat24Hour() {
     SystemSettings properties;
     if (!loadSystemSettings(properties)) {
-        return true;
+        return false;
     } else {
         return properties.timeFormat24h;
     }