diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 02b4032..e238289 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -48,6 +48,10 @@
         <activity
             android:name=".DateCheckerActivity"
             android:exported="false" />
+
+        <activity
+            android:name=".ShiftPatternActivity"
+            android:exported="false" />
     </application>
 
-</manifest>
\ No newline at end of file
+</manifest>
diff --git a/app/src/main/kotlin/plus/rua/project/MainActivity.kt b/app/src/main/kotlin/plus/rua/project/MainActivity.kt
index f9a24a4..7760b68 100644
--- a/app/src/main/kotlin/plus/rua/project/MainActivity.kt
+++ b/app/src/main/kotlin/plus/rua/project/MainActivity.kt
@@ -21,6 +21,9 @@ class MainActivity : BaseActivity() {
                     },
                     onNavigateToTools = {
                         startActivityWithSlide(Intent(this, ToolsActivity::class.java))
+                    },
+                    onNavigateToShiftSettings = {
+                        startActivityWithSlide(Intent(this, ShiftPatternActivity::class.java))
                     }
                 )
             }
diff --git a/app/src/main/kotlin/plus/rua/project/ShiftPatternActivity.kt b/app/src/main/kotlin/plus/rua/project/ShiftPatternActivity.kt
new file mode 100644
index 0000000..18ddb51
--- /dev/null
+++ b/app/src/main/kotlin/plus/rua/project/ShiftPatternActivity.kt
@@ -0,0 +1,18 @@
+package plus.rua.project
+
+import android.os.Bundle
+import androidx.activity.compose.setContent
+import plus.rua.project.ui.ShiftPatternScreen
+import plus.rua.project.ui.theme.YaYaTheme
+
+class ShiftPatternActivity : BaseActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        setContent {
+            YaYaTheme {
+                ShiftPatternScreen(onBack = { finishWithSlideBack() })
+            }
+        }
+    }
+}
diff --git a/core/src/main/kotlin/plus/rua/project/CalendarViewModel.kt b/core/src/main/kotlin/plus/rua/project/CalendarViewModel.kt
index 00d0473..5256691 100644
--- a/core/src/main/kotlin/plus/rua/project/CalendarViewModel.kt
+++ b/core/src/main/kotlin/plus/rua/project/CalendarViewModel.kt
@@ -59,7 +59,8 @@ data class CalendarUiState(
  * @param clock 时钟源，默认系统时钟；测试时可注入固定时钟
  */
 class CalendarViewModel(
-    private val clock: Clock = Clock.System
+    private val clock: Clock = Clock.System,
+    private val shiftStorage: ShiftPatternStorage? = null
 ) : ViewModel() {
     private val today: LocalDate = clock.todayIn(TimeZone.currentSystemDefault())
 
@@ -112,17 +113,30 @@ class CalendarViewModel(
 
     /**
      * 个人轮班。与法定节假日完全独立,不受调休影响。
-     * MVP 默认:2026-05-15 起,2 班 2 休循环。后续接入设置页与持久化。
+     * 从 [shiftStorage] 加载;storage 为空或未存时回退到 [DEFAULT_PATTERN]。
      */
-    private val _shiftPattern = MutableStateFlow<ShiftPattern?>(
-        ShiftPattern(
+    private val _shiftPattern = MutableStateFlow(loadShiftPattern())
+    val shiftPattern: StateFlow<ShiftPattern?> = _shiftPattern.asStateFlow()
+
+    private fun loadShiftPattern(): ShiftPattern =
+        shiftStorage?.load() ?: DEFAULT_PATTERN
+
+    /**
+     * 设置页返回后调用,从 storage 重新加载,立即生效。
+     */
+    fun refreshShiftPattern() {
+        _shiftPattern.value = loadShiftPattern()
+    }
+
+    fun shiftKindAt(date: LocalDate): ShiftKind? = shiftPattern.value?.kindAt(date)
+
+    companion object {
+        /** 默认轮班:2026-05-15 起,2 班 2 休循环。 */
+        val DEFAULT_PATTERN = ShiftPattern(
             anchorDate = LocalDate(2026, 5, 15),
             cycle = listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF)
         )
-    )
-    val shiftPattern: StateFlow<ShiftPattern?> = _shiftPattern.asStateFlow()
-
-    fun shiftKindAt(date: LocalDate): ShiftKind? = shiftPattern.value?.kindAt(date)
+    }
 
     /**
      * 是否在右上角显示法定调休角标。默认禁用,此时右上角让位给个人排班。
diff --git a/core/src/main/kotlin/plus/rua/project/ShiftPattern.kt b/core/src/main/kotlin/plus/rua/project/ShiftPattern.kt
index d34037f..37a8c61 100644
--- a/core/src/main/kotlin/plus/rua/project/ShiftPattern.kt
+++ b/core/src/main/kotlin/plus/rua/project/ShiftPattern.kt
@@ -8,26 +8,56 @@ import kotlinx.datetime.daysUntil
  */
 enum class ShiftKind { WORK, OFF }
 
+/**
+ * 相位断点:从 [date] 起重排周期相位,[cycleOffset] 指定当天对应 cycle 的第几位。
+ *
+ * @param date 断点生效日(含当天)
+ * @param cycleOffset 该天对应的 cycle 索引(0 = cycle[0])
+ */
+data class PhaseBreak(
+    val date: LocalDate,
+    val cycleOffset: Int
+)
+
 /**
  * 个人轮班周期。
  *
- * 与法定节假日完全独立:周期内某天是 WORK 还是 OFF,只看
- * `(date - anchorDate) mod cycle.size` 在 cycle 中的取值,不受任何节假日/调休影响。
+ * 与法定节假日完全独立。某天的班/休由以下顺序决定:
+ * 1. 若 [overrides] 命中该天,取 override 值(单日翻转);
+ * 2. 否则取该天"活跃锚点"(最近的 phaseBreak 或基础 anchorDate)起算的 cycle 索引。
  *
- * @param anchorDate 周期基准日,对应 cycle[0]
+ * @param anchorDate 基础周期基准日,对应 cycle[0]
  * @param cycle 一个周期内的班次序列,例如 [WORK, WORK, OFF, OFF] 表示 "2 班 2 休"
- * @param name 方案名,用于后续多套方案场景
+ * @param overrides 单日翻转映射(调班),key 为日期
+ * @param phaseBreaks 相位断点列表,从某天起重排周期相位
+ * @param name 方案名
  */
 data class ShiftPattern(
     val anchorDate: LocalDate,
     val cycle: List<ShiftKind>,
+    val overrides: Map<LocalDate, ShiftKind> = emptyMap(),
+    val phaseBreaks: List<PhaseBreak> = emptyList(),
     val name: String = "默认"
 ) {
+    /**
+     * 返回 [date] 当天的班次。优先级:overrides → 活跃锚点的 cycle 索引。
+     * cycle 为空时返回 null。
+     */
     fun kindAt(date: LocalDate): ShiftKind? {
         if (cycle.isEmpty()) return null
-        val diff = anchorDate.daysUntil(date)
+        // 1. 单日翻转优先
+        overrides[date]?.let { return it }
+        // 2. 找活跃锚点:phaseBreaks 中 date <= 当天 的最大那个;无则用基础锚点
+        val (anchor, offset) = activeAnchor(date)
+        val diff = anchor.daysUntil(date)
         val size = cycle.size
-        val idx = ((diff % size) + size) % size
+        val idx = (((diff + offset) % size) + size) % size
         return cycle[idx]
     }
+
+    private fun activeAnchor(date: LocalDate): Pair<LocalDate, Int> {
+        val applicable = phaseBreaks.filter { it.date <= date }.maxByOrNull { it.date }
+        return if (applicable != null) applicable.date to applicable.cycleOffset
+        else anchorDate to 0
+    }
 }
diff --git a/core/src/main/kotlin/plus/rua/project/ShiftPatternStorage.kt b/core/src/main/kotlin/plus/rua/project/ShiftPatternStorage.kt
new file mode 100644
index 0000000..600e9bc
--- /dev/null
+++ b/core/src/main/kotlin/plus/rua/project/ShiftPatternStorage.kt
@@ -0,0 +1,85 @@
+package plus.rua.project
+
+import android.content.Context
+import android.content.SharedPreferences
+import kotlinx.datetime.LocalDate
+
+/**
+ * 个人轮班设置持久化。照抄 [DateCheckerStorage] 模式。
+ *
+ * 编码格式(无 JSON 依赖):
+ * - 锚点:ISO 日期串 "2026-07-08"
+ * - 周期:逗号分隔的 1/0 串 "1,1,0,0"(1=WORK,0=OFF)
+ * - overrides/breaks:逗号分隔的 "日期:值" 对
+ *   - overrides 值:1=WORK,0=OFF
+ *   - breaks 值:cycleOffset(整数)
+ */
+class ShiftPatternStorage(private val prefs: SharedPreferences) {
+
+    companion object {
+        private const val KEY_ANCHOR = "shift_anchor"
+        private const val KEY_CYCLE = "shift_cycle"
+        private const val KEY_OVERRIDES = "shift_overrides"
+        private const val KEY_BREAKS = "shift_breaks"
+        private const val KEY_NAME = "shift_name"
+        private const val SEP = ","
+
+        fun fromContext(context: Context): ShiftPatternStorage =
+            ShiftPatternStorage(
+                context.getSharedPreferences("shift_pattern", Context.MODE_PRIVATE)
+            )
+    }
+
+    fun save(pattern: ShiftPattern) {
+        val cycleStr = pattern.cycle.joinToString(SEP) { if (it == ShiftKind.WORK) "1" else "0" }
+        val overridesStr = pattern.overrides.entries
+            .joinToString(SEP) { "${it.key}:${if (it.value == ShiftKind.WORK) 1 else 0}" }
+        val breaksStr = pattern.phaseBreaks
+            .joinToString(SEP) { "${it.date}:${it.cycleOffset}" }
+        prefs.edit()
+            .putString(KEY_ANCHOR, pattern.anchorDate.toString())
+            .putString(KEY_CYCLE, cycleStr)
+            .putString(KEY_OVERRIDES, overridesStr)
+            .putString(KEY_BREAKS, breaksStr)
+            .putString(KEY_NAME, pattern.name)
+            .apply()
+    }
+
+    fun load(): ShiftPattern? {
+        val anchorStr = prefs.getString(KEY_ANCHOR, null) ?: return null
+        val cycleStr = prefs.getString(KEY_CYCLE, null) ?: return null
+        return try {
+            val anchor = LocalDate.parse(anchorStr)
+            val cycle = if (cycleStr.isBlank()) {
+                emptyList()
+            } else {
+                cycleStr.split(SEP).map { if (it.trim() == "1") ShiftKind.WORK else ShiftKind.OFF }
+            }
+            val overrides = parseOverrides(prefs.getString(KEY_OVERRIDES, null))
+            val breaks = parseBreaks(prefs.getString(KEY_BREAKS, null))
+            ShiftPattern(anchor, cycle, overrides, breaks, name = prefs.getString(KEY_NAME, null) ?: "默认")
+        } catch (e: Exception) {
+            null
+        }
+    }
+
+    private fun parseOverrides(s: String?): Map<LocalDate, ShiftKind> {
+        if (s.isNullOrBlank()) return emptyMap()
+        return s.split(SEP).associate { pair ->
+            val parts = pair.split(":")
+            LocalDate.parse(parts[0]) to (if (parts[1].trim() == "1") ShiftKind.WORK else ShiftKind.OFF)
+        }
+    }
+
+    private fun parseBreaks(s: String?): List<PhaseBreak> {
+        if (s.isNullOrBlank()) return emptyList()
+        return s.split(SEP).map { pair ->
+            val parts = pair.split(":")
+            PhaseBreak(LocalDate.parse(parts[0]), parts[1].trim().toInt())
+        }
+    }
+
+    fun clear() {
+        prefs.edit().clear().apply()
+    }
+}
diff --git a/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt b/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
index 8e458e4..f894432 100644
--- a/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
+++ b/core/src/main/kotlin/plus/rua/project/ui/CalendarMonthView.kt
@@ -93,7 +93,15 @@ import plus.rua.project.composeTraceBeginSection
 import plus.rua.project.composeTraceEndSection
 import kotlin.math.abs
 import kotlin.time.Clock
+import androidx.compose.runtime.DisposableEffect
+import androidx.compose.ui.platform.LocalContext
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
+import androidx.lifecycle.compose.LocalLifecycleOwner
 import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.lifecycle.viewmodel.initializer
+import androidx.lifecycle.viewmodel.viewModelFactory
+import plus.rua.project.ShiftPatternStorage
 
 /**
  * 日历主界面，包含月/周视图切换、折叠动画和年视图转场。
@@ -107,12 +115,34 @@ import androidx.lifecycle.viewmodel.compose.viewModel
 fun CalendarMonthView(
     modifier: Modifier = Modifier,
     onNavigateToAbout: () -> Unit = {},
-    onNavigateToTools: () -> Unit = {}
+    onNavigateToTools: () -> Unit = {},
+    onNavigateToShiftSettings: () -> Unit = {}
 ) {
-    val viewModel = viewModel<CalendarViewModel>()
+    val context = LocalContext.current.applicationContext
+    val viewModel: CalendarViewModel = viewModel(
+        factory = viewModelFactory {
+            initializer {
+                CalendarViewModel(
+                    clock = Clock.System,
+                    shiftStorage = ShiftPatternStorage.fromContext(context)
+                )
+            }
+        }
+    )
+
+    // 设置页返回后 onResume 重读 storage,立即刷新班次
+    val lifecycleOwner = LocalLifecycleOwner.current
+    DisposableEffect(lifecycleOwner) {
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_RESUME) viewModel.refreshShiftPattern()
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
+    }
     val today = remember { Clock.System.todayIn(TimeZone.currentSystemDefault()) }
 
     val uiState by viewModel.uiState.collectAsState()
+    val shiftPattern by viewModel.shiftPattern.collectAsState()
     val selectedDate = uiState.selectedDate
     val currentYear = selectedDate.year
     val currentMonth = selectedDate.month.number
@@ -241,7 +271,7 @@ fun CalendarMonthView(
                                     viewModel.selectDate(date)
                                 }
                             }
-                            val shiftKindAt = remember(viewModel) {
+                            val shiftKindAt = remember(viewModel, shiftPattern) {
                                 { date: LocalDate -> viewModel.shiftKindAt(date) }
                             }
                             val onRowHeightMeasured = remember {
@@ -427,6 +457,14 @@ fun CalendarMonthView(
                             viewModel.toggleShowLegalHoliday()
                         }
                     )
+                    MenuItem(
+                        text = "班次设置",
+                        selected = false,
+                        onClick = {
+                            isMenuExpanded = false
+                            onNavigateToShiftSettings()
+                        }
+                    )
                     HorizontalDivider(
                         thickness = 1.dp,
                         color = MaterialTheme.colorScheme.outlineVariant,
@@ -589,6 +627,7 @@ private fun BottomCardArea(
     val shouldShow = hasLoaded
 
     val uiState by viewModel.uiState.collectAsState()
+    val shiftPattern by viewModel.shiftPattern.collectAsState()
     val shiftKind = viewModel.shiftKindAt(uiState.selectedDate)
 
     if (shouldShow) {
diff --git a/core/src/main/kotlin/plus/rua/project/ui/ShiftCalendarGrid.kt b/core/src/main/kotlin/plus/rua/project/ui/ShiftCalendarGrid.kt
new file mode 100644
index 0000000..7d0a658
--- /dev/null
+++ b/core/src/main/kotlin/plus/rua/project/ui/ShiftCalendarGrid.kt
@@ -0,0 +1,229 @@
+package plus.rua.project.ui
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ChevronLeft
+import androidx.compose.material.icons.filled.ChevronRight
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import kotlinx.datetime.DatePeriod
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.Month
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.isoDayNumber
+import kotlinx.datetime.minus
+import kotlinx.datetime.number
+import kotlinx.datetime.plus
+import kotlinx.datetime.todayIn
+import kotlin.time.Clock
+import plus.rua.project.PhaseBreak
+import plus.rua.project.ShiftKind
+import plus.rua.project.ShiftPattern
+
+/**
+ * 班次设置页用的迷你月历。点某天翻转班/休,长按设/清相位断点。
+ *
+ * 月份可前后翻页,每格显示日期数字与班次角标(班/休/断)。
+ * 点击翻转该天的班/休 override;长按切换相位断点。
+ *
+ * @param pattern 当前轮班配置(只读),由 [onPatternChange] 修改
+ * @param onPatternChange 修改后的新 pattern 回调
+ * @param modifier 外部布局修饰符
+ */
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+fun ShiftCalendarGrid(
+    pattern: ShiftPattern,
+    onPatternChange: (ShiftPattern) -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val today = remember { Clock.System.todayIn(TimeZone.currentSystemDefault()) }
+    var viewYear by remember { mutableStateOf(today.year) }
+    var viewMonth by remember { mutableStateOf(today.month.number) }
+
+    val firstOfMonth = LocalDate(viewYear, Month(viewMonth), 1)
+    val daysInMonth = firstOfMonth.plus(DatePeriod(months = 1)).minus(DatePeriod(days = 1)).day
+    val firstWeekdayOffset = firstOfMonth.dayOfWeek.isoDayNumber - 1
+
+    Card(
+        modifier = modifier.fillMaxWidth(),
+        shape = RoundedCornerShape(12.dp),
+        elevation = CardDefaults.cardElevation(defaultElevation = 0.dp),
+        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceContainerLow)
+    ) {
+        Column(Modifier.padding(8.dp)) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                IconButton(onClick = {
+                    if (viewMonth == 1) { viewMonth = 12; viewYear -= 1 } else viewMonth -= 1
+                }) {
+                    Icon(Icons.Filled.ChevronLeft, contentDescription = "上个月")
+                }
+                Text(
+                    text = "${viewYear}年 ${viewMonth}月",
+                    style = MaterialTheme.typography.titleSmall,
+                    fontWeight = FontWeight.SemiBold
+                )
+                IconButton(onClick = {
+                    if (viewMonth == 12) { viewMonth = 1; viewYear += 1 } else viewMonth += 1
+                }) {
+                    Icon(Icons.Filled.ChevronRight, contentDescription = "下个月")
+                }
+            }
+
+            val weekTitles = listOf("一", "二", "三", "四", "五", "六", "日")
+            Row(Modifier.fillMaxWidth()) {
+                weekTitles.forEach { w ->
+                    Text(
+                        text = w,
+                        modifier = Modifier.weight(1f),
+                        style = MaterialTheme.typography.labelSmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        textAlign = TextAlign.Center
+                    )
+                }
+            }
+
+            (0 until 6).forEach { row ->
+                Row(Modifier.fillMaxWidth()) {
+                    (0 until 7).forEach { col ->
+                        val cellIndex = row * 7 + col
+                        val dayNum = cellIndex - firstWeekdayOffset + 1
+                        if (dayNum in 1..daysInMonth) {
+                            val date = LocalDate(viewYear, Month(viewMonth), dayNum)
+                            ShiftDayCell(
+                                date = date,
+                                pattern = pattern,
+                                onClick = { onPatternChange(toggleOverride(pattern, date)) },
+                                onLongClick = { onPatternChange(togglePhaseBreak(pattern, date)) },
+                                modifier = Modifier.weight(1f)
+                            )
+                        } else {
+                            Box(Modifier.weight(1f).aspectRatio(1f))
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+/**
+ * 翻转某天的班/休 override。翻转后若与基础周期值一致,则移除 override。
+ */
+private fun toggleOverride(pattern: ShiftPattern, date: LocalDate): ShiftPattern {
+    val current = pattern.kindAt(date) ?: return pattern
+    val newVal = if (current == ShiftKind.WORK) ShiftKind.OFF else ShiftKind.WORK
+    val tempPattern = pattern.copy(overrides = pattern.overrides - date)
+    val base = tempPattern.kindAt(date)
+    val newOverrides = if (newVal == base) pattern.overrides - date
+                       else pattern.overrides + (date to newVal)
+    return pattern.copy(overrides = newOverrides)
+}
+
+/**
+ * 切换某天的相位断点:已有则清除,没有则新增(cycleOffset=0)。
+ */
+private fun togglePhaseBreak(pattern: ShiftPattern, date: LocalDate): ShiftPattern {
+    val existing = pattern.phaseBreaks.find { it.date == date }
+    return if (existing != null) {
+        pattern.copy(phaseBreaks = pattern.phaseBreaks - existing)
+    } else {
+        pattern.copy(phaseBreaks = pattern.phaseBreaks + PhaseBreak(date, 0))
+    }
+}
+
+/**
+ * 迷你月历的单日格子。显示日期数字与班次角标。
+ *
+ * @param date 该格对应的日期
+ * @param pattern 当前轮班配置(只读)
+ * @param onClick 点击回调(翻转班/休)
+ * @param onLongClick 长按回调(设/清相位断点)
+ * @param modifier 外部布局修饰符
+ */
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+private fun ShiftDayCell(
+    date: LocalDate,
+    pattern: ShiftPattern,
+    onClick: () -> Unit,
+    onLongClick: () -> Unit,
+    modifier: Modifier = Modifier
+) {
+    val kind = pattern.kindAt(date)
+    val isBreak = pattern.phaseBreaks.any { it.date == date }
+
+    val badgeColor = when {
+        isBreak -> MaterialTheme.colorScheme.tertiary
+        kind == ShiftKind.WORK -> MaterialTheme.colorScheme.primary
+        kind == ShiftKind.OFF -> MaterialTheme.colorScheme.error
+        else -> Color.Transparent
+    }
+    val badgeText = when {
+        isBreak -> "断"
+        kind == ShiftKind.WORK -> "班"
+        kind == ShiftKind.OFF -> "休"
+        else -> ""
+    }
+
+    Box(
+        modifier = modifier
+            .aspectRatio(1f)
+            .combinedClickable(onClick = onClick, onLongClick = onLongClick),
+        contentAlignment = Alignment.Center
+    ) {
+        Text(
+            text = date.day.toString(),
+            fontSize = 13.sp,
+            color = MaterialTheme.colorScheme.onSurface
+        )
+        if (badgeText.isNotEmpty()) {
+            Box(
+                modifier = Modifier
+                    .align(Alignment.TopEnd)
+                    .padding(top = 2.dp, end = 2.dp)
+                    .background(badgeColor, CircleShape)
+                    .padding(horizontal = 3.dp, vertical = 1.dp)
+            ) {
+                Text(
+                    text = badgeText,
+                    color = MaterialTheme.colorScheme.onPrimary,
+                    fontSize = 8.sp,
+                    fontWeight = FontWeight.Bold,
+                    lineHeight = 8.sp
+                )
+            }
+        }
+    }
+}
diff --git a/core/src/main/kotlin/plus/rua/project/ui/ShiftPatternScreen.kt b/core/src/main/kotlin/plus/rua/project/ui/ShiftPatternScreen.kt
new file mode 100644
index 0000000..3fb57c0
--- /dev/null
+++ b/core/src/main/kotlin/plus/rua/project/ui/ShiftPatternScreen.kt
@@ -0,0 +1,220 @@
+package plus.rua.project.ui
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ChevronLeft
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Card
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.DatePicker
+import androidx.compose.material3.DatePickerDialog
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.material3.rememberDatePickerState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import kotlinx.datetime.LocalDate
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.atStartOfDayIn
+import kotlinx.datetime.toLocalDateTime
+import plus.rua.project.CalendarViewModel
+import plus.rua.project.ShiftKind
+import plus.rua.project.ShiftPattern
+import plus.rua.project.ShiftPatternStorage
+import kotlin.time.Instant
+
+/**
+ * 班次设置页。照抄 DateCheckerScreen 的 storage 创建 + 自动存盘模式。
+ *
+ * 用户在页面内修改 → [LaunchedEffect] 自动存 storage → 返回主界面后
+ * CalendarViewModel.onResume 重读 → 日历立即刷新。
+ *
+ * 页面结构三段:
+ * 1. 基础周期:锚点日期、当前周期展示;
+ * 2. 预设方案:1班1休 / 2班2休 / 3班3休 / 4班4休 快捷切换;
+ * 3. 调班设置:迷你月历(点=翻转班/休,长按=设/清相位断点)+ 恢复默认。
+ *
+ * @param onBack 返回回调(由 Activity 触发 finishWithSlideBack)
+ */
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
+@Composable
+fun ShiftPatternScreen(onBack: () -> Unit) {
+    val context = LocalContext.current.applicationContext
+    val storage = remember { ShiftPatternStorage.fromContext(context) }
+    val saved = remember { storage.load() }
+    var pattern by remember { mutableStateOf(saved ?: CalendarViewModel.DEFAULT_PATTERN) }
+    LaunchedEffect(pattern) { storage.save(pattern) }
+
+    var showAnchorPicker by remember { mutableStateOf(false) }
+    var showResetDialog by remember { mutableStateOf(false) }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text("班次设置") },
+                navigationIcon = {
+                    IconButton(onClick = onBack) {
+                        Icon(Icons.Filled.ChevronLeft, contentDescription = "返回")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+                .verticalScroll(rememberScrollState())
+                .padding(horizontal = 16.dp, vertical = 8.dp),
+            verticalArrangement = Arrangement.spacedBy(16.dp)
+        ) {
+            Text("基础周期", style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+
+            Card(
+                modifier = Modifier.fillMaxWidth(),
+                shape = RoundedCornerShape(12.dp),
+                elevation = CardDefaults.cardElevation(defaultElevation = 0.dp),
+                colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceContainerLow)
+            ) {
+                Column(Modifier.padding(16.dp), verticalArrangement = Arrangement.spacedBy(12.dp)) {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text("锚点日期", style = MaterialTheme.typography.bodyMedium)
+                        TextButton(onClick = { showAnchorPicker = true }) {
+                            Text(pattern.anchorDate.toString())
+                        }
+                    }
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        Text("周期", style = MaterialTheme.typography.bodyMedium)
+                        Text(
+                            pattern.cycle.joinToString(" ") { if (it == ShiftKind.WORK) "班" else "休" },
+                            style = MaterialTheme.typography.bodyMedium,
+                            color = MaterialTheme.colorScheme.primary,
+                            fontWeight = FontWeight.SemiBold
+                        )
+                    }
+                }
+            }
+
+            Text("预设方案", style = MaterialTheme.typography.labelLarge)
+            val presets = listOf(
+                "1班1休" to listOf(ShiftKind.WORK, ShiftKind.OFF),
+                "2班2休" to listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF),
+                "3班3休" to listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF, ShiftKind.OFF),
+                "4班4休" to listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF, ShiftKind.OFF, ShiftKind.OFF)
+            )
+            FlowRow(horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                presets.forEach { (label, cycle) ->
+                    FilterChip(
+                        selected = pattern.cycle == cycle,
+                        onClick = {
+                            pattern = pattern.copy(
+                                cycle = cycle,
+                                overrides = emptyMap(),
+                                phaseBreaks = emptyList()
+                            )
+                        },
+                        label = { Text(label) }
+                    )
+                }
+            }
+
+            Text("调班设置", style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+            ShiftCalendarGrid(pattern = pattern, onPatternChange = { pattern = it })
+            Text(
+                text = "点某天 = 翻转班/休,长按某天 = 设/清相位断点",
+                style = MaterialTheme.typography.labelSmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Text(
+                text = "图例:班(蓝)/休(红)/断点(琥珀)",
+                style = MaterialTheme.typography.labelSmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant
+            )
+
+            OutlinedButton(
+                onClick = { showResetDialog = true },
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text("恢复默认")
+            }
+        }
+    }
+
+    if (showAnchorPicker) {
+        val state = rememberDatePickerState(
+            initialSelectedDateMillis = pattern.anchorDate.toEpochMillis()
+        )
+        DatePickerDialog(
+            onDismissRequest = { showAnchorPicker = false },
+            confirmButton = {
+                TextButton(onClick = {
+                    state.selectedDateMillis?.let { pattern = pattern.copy(anchorDate = it.toLocalDate()) }
+                    showAnchorPicker = false
+                }) { Text("确定") }
+            },
+            dismissButton = {
+                TextButton(onClick = { showAnchorPicker = false }) { Text("取消") }
+            }
+        ) {
+            DatePicker(state = state)
+        }
+    }
+
+    if (showResetDialog) {
+        AlertDialog(
+            onDismissRequest = { showResetDialog = false },
+            title = { Text("恢复默认") },
+            text = { Text("将清空所有调班与断点设置,恢复为 2 班 2 休。确认?") },
+            confirmButton = {
+                TextButton(onClick = {
+                    pattern = CalendarViewModel.DEFAULT_PATTERN
+                    showResetDialog = false
+                }) { Text("确定") }
+            },
+            dismissButton = {
+                TextButton(onClick = { showResetDialog = false }) { Text("取消") }
+            }
+        )
+    }
+}
+
+private fun LocalDate.toEpochMillis(): Long =
+    this.atStartOfDayIn(TimeZone.UTC).toEpochMilliseconds()
+
+private fun Long.toLocalDate(): LocalDate =
+    Instant.fromEpochMilliseconds(this).toLocalDateTime(TimeZone.UTC).date
diff --git a/core/src/test/kotlin/plus/rua/project/CalendarViewModelTest.kt b/core/src/test/kotlin/plus/rua/project/CalendarViewModelTest.kt
index 065b97c..3b46641 100644
--- a/core/src/test/kotlin/plus/rua/project/CalendarViewModelTest.kt
+++ b/core/src/test/kotlin/plus/rua/project/CalendarViewModelTest.kt
@@ -1,9 +1,11 @@
 package plus.rua.project
 
+import android.content.SharedPreferences
 import kotlinx.datetime.Clock
 import kotlinx.datetime.Instant
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.number
+import plus.rua.project.ShiftKind
 import kotlin.test.Test
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
@@ -127,4 +129,126 @@ class CalendarViewModelTest {
         val selectedCell = days.first { it.isSelected }
         assertEquals(15, selectedCell.date.day)
     }
+
+    // ---- shiftPattern: 默认值与 refresh ----
+
+    @Test
+    fun shiftPattern_noStorage_returnsDefault() {
+        val vm = createViewModel()   // 不传 storage
+        assertEquals(ShiftKind.WORK, vm.shiftKindAt(LocalDate(2026, 5, 15)))
+        assertEquals(ShiftKind.OFF, vm.shiftKindAt(LocalDate(2026, 5, 17)))
+    }
+
+    @Test
+    fun refreshShiftPattern_reloadsFromStorage() {
+        val prefs = CalendarVmTestPrefs()
+        val storage = ShiftPatternStorage(prefs)
+        // storage 里存一个 1班1休,锚点 2026-01-01
+        storage.save(
+            ShiftPattern(
+                anchorDate = LocalDate(2026, 1, 1),
+                cycle = listOf(ShiftKind.WORK, ShiftKind.OFF)
+            )
+        )
+        val vm = CalendarViewModel(clock = testClock, shiftStorage = storage)
+        // 初始即从 storage 读
+        assertEquals(ShiftKind.WORK, vm.shiftKindAt(LocalDate(2026, 1, 1)))
+        assertEquals(ShiftKind.OFF, vm.shiftKindAt(LocalDate(2026, 1, 2)))
+    }
+
+    @Test
+    fun refreshShiftPattern_reloadsAfterStorageChange() {
+        val prefs = CalendarVmTestPrefs()
+        val storage = ShiftPatternStorage(prefs)
+        // 初始:2 班 2 休(默认),构造 VM(不传 storage → 用 DEFAULT_PATTERN)
+        val vm = CalendarViewModel(clock = testClock, shiftStorage = storage)
+        // 2026-05-15 = WORK(默认 2班2休 锚点)
+        assertEquals(ShiftKind.WORK, vm.shiftKindAt(LocalDate(2026, 5, 15)))
+        // 改 storage 为 1班1休,锚点 2026-01-01
+        storage.save(
+            ShiftPattern(
+                anchorDate = LocalDate(2026, 1, 1),
+                cycle = listOf(ShiftKind.WORK, ShiftKind.OFF)
+            )
+        )
+        // refresh 前:VM 还持有旧 pattern
+        assertEquals(ShiftKind.WORK, vm.shiftKindAt(LocalDate(2026, 5, 15)))
+        // 调用 refresh
+        vm.refreshShiftPattern()
+        // refresh 后:VM 已从 storage 重读
+        // 2026-05-15 距 2026-01-01 = 134 天,134 % 2 = 0 → cycle[0] = WORK
+        assertEquals(ShiftKind.WORK, vm.shiftKindAt(LocalDate(2026, 5, 15)))
+        // 2026-01-02 距锚点 1 天,1 % 2 = 1 → cycle[1] = OFF
+        assertEquals(ShiftKind.OFF, vm.shiftKindAt(LocalDate(2026, 1, 2)))
+    }
+}
+
+private class CalendarVmTestPrefs : SharedPreferences {
+
+    private val data = mutableMapOf<String, Any?>()
+
+    override fun getAll(): Map<String, *> = data.toMap()
+
+    override fun getString(key: String, defValue: String?): String? =
+        data[key] as? String ?: defValue
+
+    override fun getStringSet(key: String, defValues: Set<String>?): Set<String>? =
+        data[key] as? Set<String> ?: defValues
+
+    override fun getInt(key: String, defValue: Int): Int =
+        data[key] as? Int ?: defValue
+
+    override fun getLong(key: String, defValue: Long): Long =
+        data[key] as? Long ?: defValue
+
+    override fun getFloat(key: String, defValue: Float): Float =
+        data[key] as? Float ?: defValue
+
+    override fun getBoolean(key: String, defValue: Boolean): Boolean =
+        data[key] as? Boolean ?: defValue
+
+    override fun contains(key: String): Boolean = data.containsKey(key)
+
+    override fun edit(): SharedPreferences.Editor = CalendarVmTestPrefsEditor(data)
+
+    override fun registerOnSharedPreferenceChangeListener(listener: SharedPreferences.OnSharedPreferenceChangeListener?) {}
+
+    override fun unregisterOnSharedPreferenceChangeListener(listener: SharedPreferences.OnSharedPreferenceChangeListener?) {}
+}
+
+private class CalendarVmTestPrefsEditor(private val data: MutableMap<String, Any?>) : SharedPreferences.Editor {
+
+    private val pending = mutableMapOf<String, Any?>()
+    private var clearPending = false
+
+    override fun putString(key: String, value: String?): SharedPreferences.Editor = apply {
+        pending[key] = value
+    }
+
+    override fun putStringSet(key: String, values: Set<String>?): SharedPreferences.Editor = apply {
+        pending[key] = values
+    }
+
+    override fun putInt(key: String, value: Int): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putLong(key: String, value: Long): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putFloat(key: String, value: Float): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putBoolean(key: String, value: Boolean): SharedPreferences.Editor = apply { pending[key] = value }
+
+    override fun remove(key: String): SharedPreferences.Editor = apply { pending[key] = null }
+
+    override fun clear(): SharedPreferences.Editor = apply { clearPending = true }
+
+    override fun commit(): Boolean {
+        apply()
+        return true
+    }
+
+    override fun apply() {
+        if (clearPending) {
+            data.clear()
+            clearPending = false
+        }
+        data.putAll(pending)
+        pending.clear()
+    }
 }
diff --git a/core/src/test/kotlin/plus/rua/project/ShiftPatternStorageTest.kt b/core/src/test/kotlin/plus/rua/project/ShiftPatternStorageTest.kt
new file mode 100644
index 0000000..238188a
--- /dev/null
+++ b/core/src/test/kotlin/plus/rua/project/ShiftPatternStorageTest.kt
@@ -0,0 +1,170 @@
+package plus.rua.project
+
+import android.content.SharedPreferences
+import kotlinx.datetime.LocalDate
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertNull
+
+class ShiftPatternStorageTest {
+
+    private val prefs = ShiftPatternTestPrefs()
+    private val storage = ShiftPatternStorage(prefs)
+
+    @Test
+    fun load_noSavedData_returnsNull() {
+        storage.clear()
+        assertNull(storage.load())
+    }
+
+    @Test
+    fun saveAndLoad_roundTrips_basicPattern() {
+        storage.clear()
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 5, 15),
+            cycle = listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF)
+        )
+        storage.save(pattern)
+        val result = storage.load()
+        assertEquals(pattern, result)
+    }
+
+    @Test
+    fun saveAndLoad_roundTrips_withOverridesAndBreaks() {
+        storage.clear()
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 7, 8),
+            cycle = listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF),
+            overrides = mapOf(
+                LocalDate(2026, 7, 12) to ShiftKind.OFF,
+                LocalDate(2026, 7, 14) to ShiftKind.WORK
+            ),
+            phaseBreaks = listOf(PhaseBreak(LocalDate(2026, 7, 18), 0))
+        )
+        storage.save(pattern)
+        val result = storage.load()
+        assertEquals(pattern, result)
+    }
+
+    @Test
+    fun saveAndLoad_emptyOverridesAndBreaks() {
+        storage.clear()
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 5, 15),
+            cycle = listOf(ShiftKind.WORK, ShiftKind.OFF),
+            overrides = emptyMap(),
+            phaseBreaks = emptyList()
+        )
+        storage.save(pattern)
+        assertEquals(pattern, storage.load())
+    }
+
+    @Test
+    fun load_corruptOverrides_returnsNull() {
+        storage.clear()
+        // 通过底层 prefs 注入损坏的 overrides 值
+        prefs.edit()
+            .putString("shift_anchor", "2026-05-15")
+            .putString("shift_cycle", "1,1,0,0")
+            .putString("shift_overrides", "not-a-date:1")
+            .apply()
+        assertNull(storage.load())
+    }
+
+    @Test
+    fun saveAndLoad_customName_preserved() {
+        storage.clear()
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 5, 15),
+            cycle = listOf(ShiftKind.WORK, ShiftKind.OFF),
+            name = "我的方案"
+        )
+        storage.save(pattern)
+        val loaded = storage.load()
+        assertEquals(pattern, loaded)
+        assertEquals("我的方案", loaded?.name)
+    }
+
+    @Test
+    fun saveAndLoad_emptyCycle_roundTrips() {
+        storage.clear()
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 5, 15),
+            cycle = emptyList()
+        )
+        storage.save(pattern)
+        val loaded = storage.load()
+        assertEquals(pattern, loaded)
+    }
+}
+
+// 复制自 DateCheckerStorageTest(其为 private,无法共享);重命名以避免同包下 private 类同名冲突
+private class ShiftPatternTestPrefs : SharedPreferences {
+
+    private val data = mutableMapOf<String, Any?>()
+
+    override fun getAll(): Map<String, *> = data.toMap()
+
+    override fun getString(key: String, defValue: String?): String? =
+        data[key] as? String ?: defValue
+
+    override fun getStringSet(key: String, defValues: Set<String>?): Set<String>? =
+        data[key] as? Set<String> ?: defValues
+
+    override fun getInt(key: String, defValue: Int): Int =
+        data[key] as? Int ?: defValue
+
+    override fun getLong(key: String, defValue: Long): Long =
+        data[key] as? Long ?: defValue
+
+    override fun getFloat(key: String, defValue: Float): Float =
+        data[key] as? Float ?: defValue
+
+    override fun getBoolean(key: String, defValue: Boolean): Boolean =
+        data[key] as? Boolean ?: defValue
+
+    override fun contains(key: String): Boolean = data.containsKey(key)
+
+    override fun edit(): SharedPreferences.Editor = ShiftPatternTestPrefsEditor(data)
+
+    override fun registerOnSharedPreferenceChangeListener(listener: SharedPreferences.OnSharedPreferenceChangeListener?) {}
+
+    override fun unregisterOnSharedPreferenceChangeListener(listener: SharedPreferences.OnSharedPreferenceChangeListener?) {}
+}
+
+private class ShiftPatternTestPrefsEditor(private val data: MutableMap<String, Any?>) : SharedPreferences.Editor {
+
+    private val pending = mutableMapOf<String, Any?>()
+    private var clearPending = false
+
+    override fun putString(key: String, value: String?): SharedPreferences.Editor = apply {
+        pending[key] = value
+    }
+
+    override fun putStringSet(key: String, values: Set<String>?): SharedPreferences.Editor = apply {
+        pending[key] = values
+    }
+
+    override fun putInt(key: String, value: Int): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putLong(key: String, value: Long): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putFloat(key: String, value: Float): SharedPreferences.Editor = apply { pending[key] = value }
+    override fun putBoolean(key: String, value: Boolean): SharedPreferences.Editor = apply { pending[key] = value }
+
+    override fun remove(key: String): SharedPreferences.Editor = apply { pending[key] = null }
+
+    override fun clear(): SharedPreferences.Editor = apply { clearPending = true }
+
+    override fun commit(): Boolean {
+        apply()
+        return true
+    }
+
+    override fun apply() {
+        if (clearPending) {
+            data.clear()
+            clearPending = false
+        }
+        data.putAll(pending)
+        pending.clear()
+    }
+}
diff --git a/core/src/test/kotlin/plus/rua/project/ShiftPatternTest.kt b/core/src/test/kotlin/plus/rua/project/ShiftPatternTest.kt
index 1958796..9ebb401 100644
--- a/core/src/test/kotlin/plus/rua/project/ShiftPatternTest.kt
+++ b/core/src/test/kotlin/plus/rua/project/ShiftPatternTest.kt
@@ -176,4 +176,116 @@ class ShiftPatternTest {
         assertEquals(a, b)
         assertEquals(a.hashCode(), b.hashCode())
     }
+
+    // ---- kindAt: 单日 override ----
+
+    @Test
+    fun kindAt_overrideOnBaseDay_flipsToOff() {
+        // 基础周期下 5/15 = WORK(锚点),override 为 OFF
+        val pattern = twoOnTwoOff.copy(
+            overrides = mapOf(LocalDate(2026, 5, 15) to ShiftKind.OFF)
+        )
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 15)))
+        // 隔天不受影响
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 16)))
+    }
+
+    @Test
+    fun kindAt_overrideOnOffDay_flipsToWork() {
+        // 基础周期下 5/17 = OFF,override 为 WORK
+        val pattern = twoOnTwoOff.copy(
+            overrides = mapOf(LocalDate(2026, 5, 17) to ShiftKind.WORK)
+        )
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 17)))
+    }
+
+    // ---- kindAt: 相位断点 phaseBreak ----
+
+    @Test
+    fun kindAt_phaseBreak_restartsCycleFromBreakDate() {
+        // 断点设在 5/19,从这天起重新 cycle[0]
+        val pattern = twoOnTwoOff.copy(
+            phaseBreaks = listOf(PhaseBreak(LocalDate(2026, 5, 19), 0))
+        )
+        // 5/19 = cycle[0] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 19)))
+        // 5/20 = cycle[1] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 20)))
+        // 5/21 = cycle[2] = OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 21)))
+        // 断点之前保持原相位:5/18 = (18-15)%4=3 = OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 18)))
+    }
+
+    @Test
+    fun kindAt_phaseBreakWithOffset_shiftsPhase() {
+        // 断点 5/19,cycleOffset=2:5/19 对应 cycle[2]=OFF(而非 cycle[0]=WORK)
+        val pattern = twoOnTwoOff.copy(
+            phaseBreaks = listOf(PhaseBreak(LocalDate(2026, 5, 19), 2))
+        )
+        // 5/19 = cycle[(0+2)%4] = cycle[2] = OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 19)))
+        // 5/20 = cycle[(1+2)%4] = cycle[3] = OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 20)))
+        // 5/21 = cycle[(2+2)%4] = cycle[0] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 21)))
+    }
+
+    @Test
+    fun kindAt_multiplePhaseBreaks_usesLatestApplicable() {
+        // 两个断点:5/19(offset 0) 和 5/25(offset 1)
+        val pattern = twoOnTwoOff.copy(
+            phaseBreaks = listOf(
+                PhaseBreak(LocalDate(2026, 5, 19), 0),
+                PhaseBreak(LocalDate(2026, 5, 25), 1)
+            )
+        )
+        // 5/19-5/24 受第一个断点支配(offset 0)
+        // 5/19 = cycle[0] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 19)))
+        // 5/24 = cycle[(5)%4] = cycle[1] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 24)))
+        // 5/25 起受第二个断点支配(offset 1)
+        // 5/25 = cycle[(0+1)%4] = cycle[1] = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 5, 25)))
+        // 5/26 = cycle[(1+1)%4] = cycle[2] = OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 5, 26)))
+    }
+
+    // ---- kindAt: override + phaseBreak 组合(用户原始例子)----
+
+    @Test
+    fun kindAt_userExample_combinedOverridesAndPhaseBreak() {
+        // 基础锚点 7/8,周期 [WORK,WORK,OFF,OFF]
+        val pattern = ShiftPattern(
+            anchorDate = LocalDate(2026, 7, 8),
+            cycle = listOf(ShiftKind.WORK, ShiftKind.WORK, ShiftKind.OFF, ShiftKind.OFF),
+            overrides = mapOf(
+                LocalDate(2026, 7, 12) to ShiftKind.OFF,  // 班→休
+                LocalDate(2026, 7, 14) to ShiftKind.WORK, // 休→班
+                LocalDate(2026, 7, 15) to ShiftKind.WORK, // 休→班
+                LocalDate(2026, 7, 16) to ShiftKind.OFF,  // 班→休
+                LocalDate(2026, 7, 17) to ShiftKind.OFF   // 班→休
+            ),
+            phaseBreaks = listOf(PhaseBreak(LocalDate(2026, 7, 18), 0))
+        )
+        // 7/10,11 = 基础周期自动算 (idx 2,3) = OFF,OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 10)))
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 11)))
+        // 7/12 = override OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 12)))
+        // 7/13 = 基础周期 (idx 5%4=1) = WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 7, 13)))
+        // 7/14,15 = override WORK
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 7, 14)))
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 7, 15)))
+        // 7/16,17 = override OFF
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 16)))
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 17)))
+        // 7/18 起 phaseBreak 重排:cycle[0,1,2,3] = WORK,WORK,OFF,OFF
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 7, 18)))
+        assertEquals(ShiftKind.WORK, pattern.kindAt(LocalDate(2026, 7, 19)))
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 20)))
+        assertEquals(ShiftKind.OFF, pattern.kindAt(LocalDate(2026, 7, 21)))
+    }
 }