ui: polish rootless home/settings behavior

Address several rootless-mode UX inconsistencies and control semantics.

- Home: fix InfoCard spacing when su path is hidden in rootless mode.
- Home: show mode label as literal 'Rootless' (not localized).
- Home: show reboot menu only when root is actually available
  (internal KP root or external root source).
- Settings: hide 'Reset su path' when running in rootless mode.
- Settings > More: invert the card transparency slider axis so the
  control matches transparency semantics while preserving stored alpha.

Author: Anatdx

app/src/main/java/com/anatdx/icepatch/ui/screen/Home.kt

@@ -119,6 +119,7 @@ import com.anatdx.icepatch.util.Version.getManagerVersion
 import com.anatdx.icepatch.util.checkNewVersion
 import com.anatdx.icepatch.util.getSELinuxStatus
 import com.anatdx.icepatch.util.reboot
+import com.anatdx.icepatch.util.rootAvailable
 import com.anatdx.icepatch.util.ui.APDialogBlurBehindUtils
 
 private val managerVersion = getManagerVersion()
@@ -139,11 +140,19 @@ fun HomeScreen(navigator: DestinationsNavigator) {
     if (kpState != APApplication.State.UNKNOWN_STATE) {
         showPatchFloatAction = false
     }
+    val canReboot by produceState(
+        initialValue = false,
+        key1 = kpState,
+        key2 = rootlessMode,
+        key3 = APApplication.superKey
+    ) {
+        value = rootAvailable()
+    }
 
     Scaffold(
         containerColor = Color.Transparent,
         topBar = {
-            TopBar(navigator = navigator, kpState = kpState)
+            TopBar(canReboot = canReboot)
         }
     ) { innerPadding ->
         Column(
@@ -435,15 +444,15 @@ fun RebootDropdownItem(@StringRes id: Int, reason: String = "") {
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun TopBar(
-    navigator: DestinationsNavigator, kpState: APApplication.State
+    canReboot: Boolean
 ) {
     var showDropdownReboot by remember { mutableStateOf(false) }
 
     TopAppBar(
         title = { Text(stringResource(R.string.app_name)) },
         colors = TopBarStyle.topAppBarColors(),
         actions = {
-        if (kpState != APApplication.State.UNKNOWN_STATE) {
+        if (canReboot) {
             IconButton(onClick = {
                 showDropdownReboot = true
             }) {
@@ -594,7 +603,7 @@ private fun KStatusCard(
                         Spacer(Modifier.height(4.dp))
                         Text(
                             text = "${Version.installedKPVString()} (${managerVersion.second}) - " + when {
-                                rootlessMode -> stringResource(R.string.home_mode_rootless)
+                                rootlessMode -> "Rootless"
                                 apState != APApplication.State.ANDROIDPATCH_NOT_INSTALLED -> stringResource(R.string.home_mode_full)
                                 else -> stringResource(R.string.home_mode_kernelpatch)
                             },
@@ -965,23 +974,33 @@ private fun InfoCard(
             }
 
             if (kpState != APApplication.State.UNKNOWN_STATE) {
+                val showKpVersion = allow("kp_version")
                 val showSuPath = !rootlessMode && allow("su_path")
+                val showApVersion =
+                    apState != APApplication.State.UNKNOWN_STATE &&
+                        apState != APApplication.State.ANDROIDPATCH_NOT_INSTALLED &&
+                        allow("ap_version")
+                val showDevice = allow("device")
+                val showKernel = allow("kernel")
+                val showSystem = allow("system")
+                val showFingerprint = allow("fingerprint")
+                val showSelinux = allow("selinux")
                 InfoCardItem(
                     stringResource(R.string.home_kpatch_version),
                     Version.installedKPVString(),
                     Icons.Filled.Healing,
-                    allow("kp_version")
+                    showKpVersion
                 )
-                if (allow("kp_version") && showSuPath) {
+                if (showKpVersion && (showSuPath || showApVersion || showDevice || showKernel || showSystem || showFingerprint || showSelinux)) {
                     Spacer(Modifier.height(16.dp))
                 }
                 InfoCardItem(
                     stringResource(R.string.home_su_path),
-                    Natives.suPath(),
+                    if (showSuPath) Natives.suPath() else "",
                     Icons.Filled.Security,
                     showSuPath
                 )
-                if (showSuPath) {
+                if (showSuPath && (showApVersion || showDevice || showKernel || showSystem || showFingerprint || showSelinux)) {
                     Spacer(Modifier.height(16.dp))
                 }
             }

app/src/main/java/com/anatdx/icepatch/ui/screen/Settings.kt

@@ -110,6 +110,7 @@ import java.util.Locale
 @OptIn(ExperimentalMaterial3Api::class)
 fun SettingScreen(navigator: DestinationsNavigator) {
     val state by APApplication.apStateLiveData.observeAsState(APApplication.State.UNKNOWN_STATE)
+    val rootlessMode by APApplication.rootlessModeLiveData.observeAsState(false)
     val kPatchReady = state != APApplication.State.UNKNOWN_STATE
     val aPatchReady =
         (state == APApplication.State.ANDROIDPATCH_INSTALLING || state == APApplication.State.ANDROIDPATCH_INSTALLED || state == APApplication.State.ANDROIDPATCH_NEED_UPDATE)
@@ -267,7 +268,7 @@ fun SettingScreen(navigator: DestinationsNavigator) {
             )
 
             // su path
-            if (kPatchReady) {
+            if (kPatchReady && !rootlessMode) {
                 ListItem(
                     leadingContent = {
                         Icon(

app/src/main/java/com/anatdx/icepatch/ui/screen/SettingsMoreScreen.kt

@@ -307,10 +307,11 @@ fun SettingsMoreScreen(navigator: DestinationsNavigator) {
                 }
 
                 Text(text = stringResource(id = R.string.settings_card_alpha))
+                val cardTransparency = 1f - cardAlpha
                 Slider(
-                    value = cardAlpha,
-                    valueRange = 0.4f..1f,
-                    onValueChange = { cardAlpha = it },
+                    value = cardTransparency,
+                    valueRange = 0f..0.6f,
+                    onValueChange = { cardAlpha = (1f - it).coerceIn(0.4f, 1f) },
                     onValueChangeFinished = {
                         prefs.edit { putFloat(StylePrefs.KEY_CARD_ALPHA, cardAlpha) }
                         refreshTheme.value = true