Fix lint warnings: remove unused variable, replace monthNumber, use range check

- Remove unused currentWeeksCount variable and onWeeksChanged callback
- Replace deprecated monthNumber with month.number (requires explicit import)
- Remove all @Suppress("DEPRECATION") annotations for monthNumber
- Convert double comparison to range check (today in weekMonday..weekSunday)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

shared/src/commonMain/kotlin/plus/rua/project/CalendarViewModel.kt

@@ -12,6 +12,7 @@ import kotlinx.datetime.LocalDate
 import kotlinx.datetime.TimeZone
 import kotlinx.datetime.daysUntil
 import kotlinx.datetime.minus
+import kotlinx.datetime.number
 import kotlinx.datetime.plus
 import kotlinx.datetime.todayIn
 import kotlin.time.Clock
@@ -42,8 +43,7 @@ class CalendarViewModel(private val coroutineScope: CoroutineScope) {
     val collapseProgress: Float get() = _collapseAnimatable.value
 
     val currentYear: Int get() = selectedDate.year
-    @Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
-    val currentMonth: Int get() = selectedDate.monthNumber
+    val currentMonth: Int get() = selectedDate.month.number
 
     fun selectDate(date: LocalDate) {
         selectedDate = date
@@ -132,7 +132,6 @@ class CalendarViewModel(private val coroutineScope: CoroutineScope) {
         return diff / 7 + 1
     }
 
-    @Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
     fun getMonthDays(year: Int, month: Int): List<CalendarDay> {
         val firstOfMonth = LocalDate(year, month, 1)
         val dayOfWeekOffset = firstOfMonth.dayOfWeek.ordinal
@@ -146,7 +145,7 @@ class CalendarViewModel(private val coroutineScope: CoroutineScope) {
             val date = startDate.plus(DatePeriod(days = i))
             CalendarDay(
                 date = date,
-                isCurrentMonth = date.monthNumber == month && date.year == year,
+                isCurrentMonth = date.month.number == month && date.year == year,
                 isToday = date == today,
                 isSelected = date == selectedDate
             )

shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthPage.kt

@@ -17,6 +17,7 @@ import androidx.compose.ui.zIndex
 import kotlinx.datetime.DatePeriod
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.minus
+import kotlinx.datetime.number
 import kotlinx.datetime.plus
 
 /**
@@ -141,7 +142,6 @@ private data class DayData(
     val isCurrentMonth: Boolean
 )
 
-@Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
 private fun generateMonthDays(year: Int, month: Int): List<DayData> {
     val firstOfMonth = LocalDate(year, month, 1)
     val offset = firstOfMonth.dayOfWeek.ordinal
@@ -155,7 +155,7 @@ private fun generateMonthDays(year: Int, month: Int): List<DayData> {
         val date = startDate.plus(DatePeriod(days = i))
         DayData(
             date = date,
-            isCurrentMonth = date.monthNumber == month && date.year == year
+            isCurrentMonth = date.month.number == month && date.year == year
         )
     }
 }

shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarMonthView.kt

@@ -24,6 +24,7 @@ import androidx.compose.ui.unit.dp
 import kotlinx.datetime.DatePeriod
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.TimeZone
+import kotlinx.datetime.number
 import kotlinx.datetime.plus
 import kotlinx.datetime.todayIn
 import kotlin.math.abs
@@ -56,8 +57,6 @@ fun CalendarMonthView(
     var monthHeaderHeightPx by remember { mutableIntStateOf(0) }
     var weekdayHeaderHeightPx by remember { mutableIntStateOf(0) }
     var rowHeightPx by remember { mutableIntStateOf(0) }
-    @Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
-    var currentWeeksCount by remember { mutableIntStateOf(calculateWeeksCount(today.year, today.monthNumber)) }
     var screenWidthPx by remember { mutableIntStateOf(0) }
     var screenHeightPx by remember { mutableIntStateOf(0) }
 
@@ -153,11 +152,10 @@ fun CalendarMonthView(
                     onDateClick = { date -> viewModel.selectDate(date) },
                     onWeekChanged = { weekMonday ->
                         val weekSunday = weekMonday.plus(DatePeriod(days = 6))
-                        val date = if (today >= weekMonday && today <= weekSunday) today else weekMonday
+                        val date = if (today in weekMonday..weekSunday) today else weekMonday
                         viewModel.selectDate(date)
                         currentYear = date.year
-                        @Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
-                        currentMonth = date.monthNumber
+                        currentMonth = date.month.number
                     }
                 )
             } else {
@@ -166,7 +164,7 @@ fun CalendarMonthView(
                     today = today,
                     onDateClick = { date -> viewModel.selectDate(date) },
                     onMonthChanged = { year, month ->
-                        val date = if (year == today.year && today.monthNumber == month) today
+                        val date = if (year == today.year && today.month.number == month) today
                                    else LocalDate(year, month, 1)
                         viewModel.selectDate(date)
                         currentYear = year
@@ -175,9 +173,6 @@ fun CalendarMonthView(
                     collapseProgress = viewModel.collapseProgress,
                     rowHeightPx = rowHeightPx,
                     effectiveWeeks = effectiveWeeks,
-                    onWeeksChanged = { weeks ->
-                        currentWeeksCount = weeks
-                    },
                     onRowHeightMeasured = { h ->
                         if (h > 0 && rowHeightPx == 0) rowHeightPx = h
                     },
@@ -201,10 +196,9 @@ fun CalendarMonthView(
 
 private fun lerp(start: Float, end: Float, fraction: Float): Float = start + (end - start) * fraction
 
-@Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
 private fun calculateWeeksCountForPage(page: Int, today: LocalDate): Int {
     val initialYear = today.year
-    val initialMonth = today.monthNumber
+    val initialMonth = today.month.number
     val offset = page - START_PAGE
     val totalMonths = initialYear * 12 + (initialMonth - 1) + offset
     val year = totalMonths / 12

shared/src/commonMain/kotlin/plus/rua/project/ui/CalendarPager.kt

@@ -15,6 +15,7 @@ import kotlinx.coroutines.launch
 import kotlinx.datetime.DatePeriod
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.minus
+import kotlinx.datetime.number
 
 /** 无限分页中心页，用于 HorizontalPager 的起始位置 */
 private const val START_PAGE = Int.MAX_VALUE / 2
@@ -39,7 +40,6 @@ fun CalendarPager(
     collapseProgress: Float,
     rowHeightPx: Int,
     effectiveWeeks: Float,
-    onWeeksChanged: ((Int) -> Unit)? = null,
     onRowHeightMeasured: ((Int) -> Unit)? = null,
     pagerState: PagerState,
     modifier: Modifier = Modifier
@@ -51,7 +51,6 @@ fun CalendarPager(
     LaunchedEffect(pagerState) {
         snapshotFlow { pagerState.settledPage }.drop(1).collect { page ->
             val yearMonth = pageToYearMonth(page, initialYearMonth)
-            onWeeksChanged?.invoke(calculateWeeksCount(yearMonth.first, yearMonth.second))
             onMonthChanged(yearMonth.first, yearMonth.second)
         }
     }
@@ -89,8 +88,7 @@ fun CalendarPager(
     }
 }
 
-@Suppress("DEPRECATION") // monthNumber 无替代 API，kotlinx-datetime 尚未提供新接口
-private fun LocalDate.toYearMonth(): Pair<Int, Int> = Pair(year, monthNumber)
+private fun LocalDate.toYearMonth(): Pair<Int, Int> = Pair(year, month.number)
 
 // 页码→年月：偏移量 + 初始月份的绝对月数，再拆分回年月
 private fun pageToYearMonth(page: Int, initial: Pair<Int, Int>): Pair<Int, Int> {