feat: add Shift Planning module with full CRUD, attendance, and reporting

- Add shifts, shift_staff, and shift_attendance migrations
- Add Shift, ShiftStaff, ShiftAttendance Eloquent models with auditing
- Add ShiftService with business logic (create, start, complete, assign staff, mark attendance, reports, timesheets)
- Add ShiftResource with list, create, edit, and attendance management pages
- Add staff and attendance relation managers
- Add standalone pages: ActiveShifts, StaffManagement, ShiftReports, Timesheets
- Add dashboard widgets: ShiftOverview stats, TodaysShifts table
- Add ShiftPolicy for role-based authorization
- Add 10 shift permissions and manager role to RolePermissionSeeder
- Update User model with shift relationships
- Fix audits table migration with required columns for owen-it/laravel-auditing
- Update DatabaseSeeder to create admin user and call RolePermissionSeeder
- Switch docker-compose to MariaDB 10.11 for Docker Desktop compatibility

src/app/Filament/Pages/StaffManagement.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace App\Filament\Pages;
+
+use App\Models\User;
+use Filament\Pages\Page;
+use Filament\Tables;
+use Filament\Tables\Table;
+use Filament\Tables\Concerns\InteractsWithTable;
+use Filament\Tables\Contracts\HasTable;
+use Illuminate\Database\Eloquent\Builder;
+
+class StaffManagement extends Page implements HasTable
+{
+    use InteractsWithTable;
+
+    protected static ?string $navigationIcon = 'heroicon-o-user-group';
+
+    protected static ?string $navigationGroup = 'Shift Management';
+
+    protected static ?int $navigationSort = 3;
+
+    protected static ?string $navigationLabel = 'Staff';
+
+    protected static string $view = 'filament.pages.staff-management';
+
+    public function table(Table $table): Table
+    {
+        return $table
+            ->query(
+                User::query()
+                    ->withCount([
+                        'shifts',
+                        'shifts as upcoming_shifts_count' => fn (Builder $q) => $q->where('status', 'planned'),
+                        'shifts as active_shifts_count' => fn (Builder $q) => $q->where('status', 'in_progress'),
+                    ])
+            )
+            ->columns([
+                Tables\Columns\TextColumn::make('name')
+                    ->searchable()
+                    ->sortable(),
+                Tables\Columns\TextColumn::make('email')
+                    ->searchable(),
+                Tables\Columns\TextColumn::make('shifts_count')
+                    ->label('Total Shifts')
+                    ->sortable(),
+                Tables\Columns\TextColumn::make('upcoming_shifts_count')
+                    ->label('Upcoming')
+                    ->sortable(),
+                Tables\Columns\TextColumn::make('active_shifts_count')
+                    ->label('Active')
+                    ->sortable(),
+            ])
+            ->actions([
+                Tables\Actions\Action::make('viewTimesheet')
+                    ->label('Timesheet')
+                    ->icon('heroicon-o-clock')
+                    ->url(fn (User $record) => Timesheets::getUrl(['staff_id' => $record->id])),
+            ]);
+    }
+}