refactor(device-settings): Group Reactions items with dividers

Three dividers separate the logical clusters inside the Reactions section: ear-detection behaviors, AAP auto-behaviors (when connected), connection settings, and pop-up notifications. AAP divider only renders when at least one AAP item is shown.

app/src/main/java/eu/darken/capod/main/ui/devicesettings/DeviceSettingsScreen.kt

@@ -352,9 +352,12 @@ fun DeviceSettingsScreen(
                                     text = stringResource(R.string.settings_eardetection_info_description),
                                 )
                             }
+                            ReactionsDivider()
                         }
                         if (device.isAapConnected) {
                             val convAwareness = device.conversationalAwareness
+                            val hasAnyAapReaction =
+                                (features.hasConversationAwareness && convAwareness != null) || features.hasSleepDetection
                             if (features.hasConversationAwareness && convAwareness != null) {
                                 SettingsSwitchItem(
                                     icon = Icons.TwoTone.Hearing,
@@ -378,6 +381,9 @@ fun DeviceSettingsScreen(
                                     requiresUpgrade = !isPro,
                                 )
                             }
+                            if (hasAnyAapReaction) {
+                                ReactionsDivider()
+                            }
                         }
                         SettingsSwitchItem(
                             icon = Icons.TwoTone.BluetoothConnected,
@@ -393,6 +399,7 @@ fun DeviceSettingsScreen(
                             onClick = { if (reactions.autoConnect) showAutoConnectConditionDialog = true },
                             enabled = reactions.autoConnect,
                         )
+                        ReactionsDivider()
                         if (features.hasCase) {
                             SettingsSwitchItem(
                                 icon = Icons.AutoMirrored.TwoTone.Message,
@@ -681,6 +688,14 @@ fun DeviceSettingsScreen(
     }
 }
 
+@Composable
+private fun ReactionsDivider() {
+    HorizontalDivider(
+        modifier = Modifier.padding(horizontal = 16.dp, vertical = 4.dp),
+        color = MaterialTheme.colorScheme.outlineVariant,
+    )
+}
+
 @Composable
 private fun ToneVolumeSlider(
     level: Int,