feat: add unified HomeBottomSpacer to adapt floating nav mode

Replace static bottom spacers in all 7 home variants with a reactive
HomeBottomSpacer that dynamically adjusts height based on floating
navigation bar visibility and system navigation bar insets.

Author: matsuzaka-yuki

app/src/main/java/me/bmax/apatch/ui/screen/Home.kt

@@ -145,6 +145,7 @@ import me.bmax.apatch.util.Version.getManagerVersion
 import me.bmax.apatch.util.getSELinuxStatus
 import me.bmax.apatch.util.reboot
 import me.bmax.apatch.util.ui.APDialogBlurBehindUtils
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 private val managerVersion = getManagerVersion()
 
@@ -226,7 +227,7 @@ fun HomeScreenV1(
         if (!hideApatchCard) {
             LearnMoreCard()
         }
-        Spacer(Modifier)
+        HomeBottomSpacer()
     }
 }
 
@@ -254,7 +255,7 @@ fun HomeScreenSign(
         if (!hideApatchCard) {
             LearnMoreCard()
         }
-        Spacer(Modifier)
+        HomeBottomSpacer()
     }
 }
 

app/src/main/java/me/bmax/apatch/ui/screen/HomeCircle.kt

@@ -47,6 +47,7 @@ import me.bmax.apatch.ui.theme.BackgroundConfig
 import androidx.compose.material3.surfaceColorAtElevation
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.withContext
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 @Composable
 fun HomeScreenCircle(
@@ -207,7 +208,7 @@ fun HomeScreenCircle(
             LearnMoreCardCircle()
         }
 
-        Spacer(Modifier)
+        HomeBottomSpacer()
     }
 }
 

app/src/main/java/me/bmax/apatch/ui/screen/HomeStats.kt

@@ -36,6 +36,7 @@ import me.bmax.apatch.ui.viewmodel.TimeSeriesData
 import me.bmax.apatch.util.AppData
 import me.bmax.apatch.ui.theme.BackgroundConfig
 import kotlin.math.roundToInt
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 @Composable
 fun HomeScreenStats(
@@ -722,4 +723,6 @@ private fun StatsGridTopSection(
     if (kpState != APApplication.State.UNKNOWN_STATE && apState != APApplication.State.ANDROIDPATCH_INSTALLED) {
         AStatusCard(apState)
     }
+
+    HomeBottomSpacer()
 }

app/src/main/java/me/bmax/apatch/ui/screen/HomeV2.kt

@@ -39,6 +39,7 @@ import coil.request.ImageRequest
 import android.os.Build
 import me.bmax.apatch.apApp
 import me.bmax.apatch.util.Version.getManagerVersion
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 private val managerVersion = getManagerVersion()
 
@@ -174,7 +175,7 @@ fun HomeScreenV2(
             LearnMoreCard()
         }
 
-        Spacer(Modifier.height(16.dp))
+        HomeBottomSpacer()
     }
 }
 

app/src/main/java/me/bmax/apatch/ui/screen/HomeV3.kt

@@ -40,6 +40,7 @@ import me.bmax.apatch.util.Version
 import me.bmax.apatch.util.Version.getManagerVersion
 import me.bmax.apatch.util.getSELinuxStatus
 import me.bmax.apatch.util.rootShellForResult
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 private val managerVersion = getManagerVersion()
 
@@ -178,7 +179,7 @@ fun HomeScreenV3(
                 StorageCard(isWallpaperMode = isWallpaperMode)
             }
 
-            Spacer(Modifier.height(16.dp))
+            HomeBottomSpacer()
         }
     }
 }

app/src/main/java/me/bmax/apatch/ui/screen/HomeV4.kt

@@ -120,6 +120,7 @@ import me.bmax.apatch.util.Version.getManagerVersion
 import me.bmax.apatch.util.getSELinuxStatus
 import me.bmax.apatch.util.reboot
 import me.bmax.apatch.util.rootShellForResult
+import me.bmax.apatch.util.ui.HomeBottomSpacer
 
 private val managerVersion = getManagerVersion()
 
@@ -314,7 +315,7 @@ fun HomeScreenV4(
             }
         }
 
-        Spacer(Modifier)
+        HomeBottomSpacer()
     }
 }
 

app/src/main/java/me/bmax/apatch/util/ui/HomeBottomSpacer.kt

@@ -0,0 +1,34 @@
+package me.bmax.apatch.util.ui
+
+import androidx.compose.animation.core.animateDpAsState
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.asPaddingValues
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.navigationBars
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import me.bmax.apatch.ui.LocalBottomBarVisible
+import me.bmax.apatch.ui.LocalIsFloatingNavMode
+
+@Composable
+fun HomeBottomSpacer(modifier: Modifier = Modifier) {
+    val isFloatingMode = LocalIsFloatingNavMode.current
+    val bottomBarVisible = LocalBottomBarVisible.current.value
+    val navBarBottom = WindowInsets.navigationBars.asPaddingValues().calculateBottomPadding()
+
+    val targetHeight by animateDpAsState(
+        targetValue = when {
+            isFloatingMode && bottomBarVisible -> 80.dp + navBarBottom
+            isFloatingMode -> navBarBottom
+            else -> 16.dp
+        },
+        animationSpec = tween(durationMillis = 300),
+        label = "homeBottomSpacer"
+    )
+
+    Spacer(modifier.height(targetHeight))
+}