feat: 复刻小程序四大主页面与底部导航（UI 优先，本地 mock）

core/ui/src/main/kotlin/com/mingyuan/android_client/core/ui/status/StatusBadge.kt

@@ -0,0 +1,37 @@
+package com.mingyuan.android_client.core.ui.status
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.mingyuan.android_client.core.model.CheckinStatus
+
+@Composable
+fun StatusBadge(
+    status: CheckinStatus,
+    modifier: Modifier = Modifier,
+) {
+    val color = status.statusColor()
+    Row(
+        modifier = modifier
+            .background(color.copy(alpha = 0.12f), RoundedCornerShape(50))
+            .padding(horizontal = 8.dp, vertical = 3.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Box(Modifier.size(6.dp).background(color, CircleShape))
+        Spacer(Modifier.width(4.dp))
+        Text(status.label, color = color, fontSize = 12.sp, fontWeight = FontWeight.SemiBold)
+    }
+}

core/ui/src/main/kotlin/com/mingyuan/android_client/core/ui/status/StatusColor.kt

@@ -0,0 +1,17 @@
+package com.mingyuan.android_client.core.ui.status
+
+import androidx.compose.ui.graphics.Color
+import com.mingyuan.android_client.core.designsystem.theme.StatusAbsent
+import com.mingyuan.android_client.core.designsystem.theme.StatusEarlyLeave
+import com.mingyuan.android_client.core.designsystem.theme.StatusLate
+import com.mingyuan.android_client.core.designsystem.theme.StatusLeave
+import com.mingyuan.android_client.core.designsystem.theme.StatusNormal
+import com.mingyuan.android_client.core.model.CheckinStatus
+
+fun CheckinStatus.statusColor(): Color = when (this) {
+    CheckinStatus.NORMAL -> StatusNormal
+    CheckinStatus.LATE -> StatusLate
+    CheckinStatus.LEAVE -> StatusLeave
+    CheckinStatus.ABSENT -> StatusAbsent
+    CheckinStatus.EARLY_LEAVE -> StatusEarlyLeave
+}

core/ui/src/main/kotlin/com/mingyuan/android_client/core/ui/status/StatusPill.kt

@@ -0,0 +1,60 @@
+package com.mingyuan.android_client.core.ui.status
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.shadow
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.mingyuan.android_client.core.designsystem.theme.PillIdleBorder
+import com.mingyuan.android_client.core.designsystem.theme.SecondaryText
+import com.mingyuan.android_client.core.model.CheckinStatus
+
+@Composable
+fun StatusPill(
+    status: CheckinStatus,
+    selected: Boolean,
+    onClick: () -> Unit,
+    modifier: Modifier = Modifier,
+) {
+    val color = status.statusColor()
+    val shape = RoundedCornerShape(50)
+
+    val background = if (selected) color else Color.White
+    val textColor = if (selected) Color.White else SecondaryText
+    val borderColor = if (selected) color else PillIdleBorder
+    val dotColor = if (selected) Color.White else color
+
+    Row(
+        modifier = modifier
+            .shadow(
+                elevation = if (selected) 6.dp else 0.dp,
+                shape = shape,
+                spotColor = color.copy(alpha = 0.22f),
+                ambientColor = color.copy(alpha = 0.22f),
+            )
+            .background(background, shape)
+            .border(1.dp, borderColor, shape)
+            .clickable(onClick = onClick)
+            .padding(horizontal = 14.dp, vertical = 9.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Box(Modifier.size(8.dp).background(dotColor, CircleShape))
+        Spacer(Modifier.width(6.dp))
+        Text(status.label, color = textColor, fontSize = 13.sp, fontWeight = FontWeight.SemiBold)
+    }
+}