feat: monthly view for staff schedule + week/month toggle

Add month view to SchedulePage — toggle between Неделя/Месяц, navigate
by month, compact 31-column grid with sticky employee names, weekend
highlighting, shift start time or В badge in each cell.

src/pages/SchedulePage.tsx

@@ -4,7 +4,10 @@ import { api, type ScheduleEntry } from '../lib/api'
 import { useAuth } from '../contexts/AuthContext'
 import type { User } from '../types'
 import { cn } from '../lib/utils'
-import { format, startOfWeek, addDays, addWeeks, subWeeks, isToday, parseISO } from 'date-fns'
+import {
+  format, startOfWeek, addDays, addWeeks, subWeeks, isToday, parseISO,
+  startOfMonth, endOfMonth, eachDayOfInterval, addMonths, subMonths, getDay,
+} from 'date-fns'
 import { ru } from 'date-fns/locale'
 
 const ROLE_COLORS: Record<string, string> = {
@@ -48,6 +51,12 @@ function fmtTime(t: string | null | undefined) {
   return t.slice(0, 5)
 }
 
+/** Returns true if the date is Saturday (6) or Sunday (0) */
+function isWeekend(d: Date): boolean {
+  const dow = getDay(d)
+  return dow === 0 || dow === 6
+}
+
 interface CellEditorProps {
   userId: string
   date: string
@@ -168,18 +177,27 @@ export function SchedulePage() {
   const slug = user?.hotelSlug ?? ''
   const isManager = ['hotel_admin', 'manager', 'super_admin'].includes(user?.role ?? '')
 
+  const [viewMode, setViewMode] = useState<'week' | 'month'>('week')
+
   const [weekStart, setWeekStart] = useState(() =>
     startOfWeek(new Date(), { weekStartsOn: 1 })
   )
+  const [monthStart, setMonthStart] = useState(() =>
+    startOfMonth(new Date())
+  )
+
   const [users, setUsers]       = useState<User[]>([])
   const [schedule, setSchedule] = useState<ScheduleEntry[]>([])
   const [loading, setLoading]   = useState(true)
   const [roleFilter, setRoleFilter] = useState<string>('all')
   const [editing, setEditing]   = useState<{ userId: string; date: string } | null>(null)
 
+  // Compute date range depending on view mode
   const weekDays = getWeekDays(weekStart)
-  const from = fmtDate(weekDays[0])
-  const to   = fmtDate(weekDays[6])
+  const monthDays = eachDayOfInterval({ start: monthStart, end: endOfMonth(monthStart) })
+
+  const from = viewMode === 'week' ? fmtDate(weekDays[0]) : fmtDate(monthStart)
+  const to   = viewMode === 'week' ? fmtDate(weekDays[6]) : fmtDate(endOfMonth(monthStart))
 
   const loadData = useCallback(async () => {
     if (!slug) return
@@ -232,12 +250,16 @@ export function SchedulePage() {
     roleFilter === 'all' || u.role === roleFilter
   )
 
-  // Count scheduled shifts this week per user
-  const getWeekCount = (userId: string) =>
+  // Count scheduled shifts per user in current range
+  const getShiftCount = (userId: string) =>
     schedule.filter(s => s.userId === userId && !s.isDayOff).length
 
   const allRoles = [...new Set(users.map(u => u.role))].filter(Boolean).sort()
 
+  // Navigation handlers
+  const goTodayWeek  = () => setWeekStart(startOfWeek(new Date(), { weekStartsOn: 1 }))
+  const goTodayMonth = () => setMonthStart(startOfMonth(new Date()))
+
   return (
     <div className="p-4 md:p-6 space-y-5">
       {/* Header */}
@@ -247,8 +269,36 @@ export function SchedulePage() {
           <p className="text-sm text-slate-500 dark:text-slate-400">{users.length} сотрудников</p>
         </div>
 
-        {/* Week navigation */}
-        <div className="flex items-center gap-2">
+        <div className="flex items-center gap-2 flex-wrap">
+          {/* View mode toggle */}
+          <div className="flex rounded-lg border border-slate-200 dark:border-slate-700 overflow-hidden text-sm">
+            <button
+              onClick={() => setViewMode('week')}
+              className={cn(
+                'px-3 py-1.5 transition-colors',
+                viewMode === 'week'
+                  ? 'bg-brand-600 text-white'
+                  : 'bg-white dark:bg-slate-800 text-slate-600 dark:text-slate-400 hover:bg-slate-50 dark:hover:bg-slate-700'
+              )}
+            >
+              Неделя
+            </button>
+            <button
+              onClick={() => setViewMode('month')}
+              className={cn(
+                'px-3 py-1.5 border-l border-slate-200 dark:border-slate-700 transition-colors',
+                viewMode === 'month'
+                  ? 'bg-brand-600 text-white'
+                  : 'bg-white dark:bg-slate-800 text-slate-600 dark:text-slate-400 hover:bg-slate-50 dark:hover:bg-slate-700'
+              )}
+            >
+              Месяц
+            </button>
+          </div>
+
+          {/* Navigation */}
+          {viewMode === 'week' ? (
+            <>
               <button onClick={() => setWeekStart(w => subWeeks(w, 1))} className="btn-secondary p-2">
                 <ChevronLeft size={16} />
               </button>
@@ -258,12 +308,26 @@ export function SchedulePage() {
               <button onClick={() => setWeekStart(w => addWeeks(w, 1))} className="btn-secondary p-2">
                 <ChevronRight size={16} />
               </button>
-          <button
-            onClick={() => setWeekStart(startOfWeek(new Date(), { weekStartsOn: 1 }))}
-            className="btn-secondary text-sm"
-          >
+              <button onClick={goTodayWeek} className="btn-secondary text-sm">
                 Сегодня
               </button>
+            </>
+          ) : (
+            <>
+              <button onClick={() => setMonthStart(m => subMonths(m, 1))} className="btn-secondary p-2">
+                <ChevronLeft size={16} />
+              </button>
+              <div className="text-sm font-medium text-slate-700 dark:text-slate-300 min-w-[140px] text-center capitalize">
+                {format(monthStart, 'LLLL yyyy', { locale: ru })}
+              </div>
+              <button onClick={() => setMonthStart(m => addMonths(m, 1))} className="btn-secondary p-2">
+                <ChevronRight size={16} />
+              </button>
+              <button onClick={goTodayMonth} className="btn-secondary text-sm">
+                Сегодня
+              </button>
+            </>
+          )}
         </div>
       </div>
 
@@ -305,7 +369,8 @@ export function SchedulePage() {
             ? 'Нет сотрудников. Добавьте их на странице «Сотрудники».'
             : 'Нет сотрудников с выбранной ролью.'}
         </div>
-      ) : (
+      ) : viewMode === 'week' ? (
+        /* ── WEEK VIEW ── */
         <div className="overflow-x-auto rounded-2xl border border-slate-200 dark:border-slate-700">
           <table className="w-full min-w-[700px] border-collapse">
             <thead>
@@ -392,9 +457,116 @@ export function SchedulePage() {
                     )
                   })}
 
-                  {/* Week shift count */}
+                  {/* Shift count */}
                   <td className="px-3 py-2.5 text-center text-sm font-semibold text-slate-500 dark:text-slate-400">
-                    {getWeekCount(u.id)}
+                    {getShiftCount(u.id)}
+                  </td>
+                </tr>
+              ))}
+            </tbody>
+          </table>
+        </div>
+      ) : (
+        /* ── MONTH VIEW ── */
+        <div className="overflow-x-auto rounded-2xl border border-slate-200 dark:border-slate-700">
+          <table className="border-collapse" style={{ minWidth: `${180 + monthDays.length * 36 + 44}px` }}>
+            <thead>
+              <tr className="bg-slate-50 dark:bg-slate-800/50">
+                {/* Employee column */}
+                <th className="sticky left-0 z-10 bg-slate-50 dark:bg-slate-800/50 text-left px-3 py-2 text-xs font-semibold text-slate-500 dark:text-slate-400 w-44 border-b border-slate-200 dark:border-slate-700">
+                  Сотрудник
+                </th>
+                {monthDays.map(day => (
+                  <th key={fmtDate(day)}
+                    className={cn(
+                      'px-0.5 py-2 text-center text-[10px] font-semibold border-b border-slate-200 dark:border-slate-700 w-9',
+                      isWeekend(day) && 'bg-slate-100 dark:bg-slate-700/50',
+                      isToday(day) ? 'text-brand-600 dark:text-brand-400' : 'text-slate-500 dark:text-slate-400'
+                    )}
+                  >
+                    <div className="leading-tight">{format(day, 'EEE', { locale: ru }).slice(0, 2)}</div>
+                    <div className={cn(
+                      'font-bold text-xs leading-tight',
+                      isToday(day) ? 'text-brand-600 dark:text-brand-400' : 'text-slate-700 dark:text-slate-300'
+                    )}>
+                      {format(day, 'd')}
+                    </div>
+                  </th>
+                ))}
+                {/* Shift count column */}
+                <th className="px-2 py-2 text-[10px] font-semibold text-slate-400 border-b border-slate-200 dark:border-slate-700 text-center w-11">
+                  Смен
+                </th>
+              </tr>
+            </thead>
+            <tbody>
+              {filteredUsers.map((u, idx) => (
+                <tr key={u.id}
+                  className={cn(
+                    'border-b border-slate-100 dark:border-slate-700/50 last:border-0',
+                    idx % 2 === 0 ? 'bg-white dark:bg-slate-800' : 'bg-slate-50/30 dark:bg-slate-800/30'
+                  )}
+                >
+                  {/* Employee info — sticky */}
+                  <td className={cn(
+                    'sticky left-0 z-10 px-3 py-1.5 border-r border-slate-100 dark:border-slate-700/50',
+                    idx % 2 === 0 ? 'bg-white dark:bg-slate-800' : 'bg-slate-50/30 dark:bg-slate-800/30'
+                  )}>
+                    <div className="font-medium text-xs text-slate-900 dark:text-slate-100 truncate max-w-[140px]">
+                      {u.name}
+                    </div>
+                    <span className={cn('text-[9px] px-1 py-0.5 rounded font-medium', ROLE_COLORS[u.role] ?? 'bg-slate-100 text-slate-600')}>
+                      {ROLE_LABELS[u.role] ?? u.role}
+                    </span>
+                  </td>
+
+                  {/* Day cells — compact */}
+                  {monthDays.map(day => {
+                    const dateStr = fmtDate(day)
+                    const entry = getEntry(u.id, dateStr)
+                    const weekend = isWeekend(day)
+                    return (
+                      <td key={dateStr}
+                        className={cn(
+                          'px-0.5 py-0.5 text-center align-middle',
+                          weekend && 'bg-slate-50 dark:bg-slate-700/20',
+                          isToday(day) && 'bg-brand-50/40 dark:bg-brand-900/10',
+                        )}
+                      >
+                        <button
+                          onClick={() => isManager && setEditing({ userId: u.id, date: dateStr })}
+                          title={
+                            entry?.isDayOff
+                              ? 'Выходной'
+                              : entry?.shiftStart
+                              ? `${fmtTime(entry.shiftStart)} – ${fmtTime(entry.shiftEnd)}`
+                              : dateStr
+                          }
+                          className={cn(
+                            'w-8 h-7 rounded text-[10px] font-semibold transition-all flex items-center justify-center mx-auto',
+                            isManager && 'hover:ring-1 hover:ring-brand-300',
+                            entry?.isDayOff
+                              ? 'bg-red-100 dark:bg-red-900/30 text-red-600 dark:text-red-400'
+                              : entry?.shiftStart
+                              ? 'bg-emerald-100 dark:bg-emerald-900/30 text-emerald-700 dark:text-emerald-300'
+                              : 'bg-slate-50 dark:bg-slate-700/30 text-slate-300 dark:text-slate-600',
+                          )}
+                        >
+                          {entry?.isDayOff ? (
+                            <span>В</span>
+                          ) : entry?.shiftStart ? (
+                            <span>{fmtTime(entry.shiftStart).slice(0, 5)}</span>
+                          ) : (
+                            <span className="text-xs leading-none">+</span>
+                          )}
+                        </button>
+                      </td>
+                    )
+                  })}
+
+                  {/* Monthly shift count */}
+                  <td className="px-2 py-1.5 text-center text-xs font-semibold text-slate-500 dark:text-slate-400">
+                    {getShiftCount(u.id)}
                   </td>
                 </tr>
               ))}