Adds work week configuration feature

Implements configurable work week presets, allowing users to customize the days displayed in the calendar.

This includes:
- Defining work week settings (work days, day names, total days).
- Providing predefined work week presets (standard, compressed, weekend, full week).
- Adding UI elements to switch between presets.
- Updating grid and header rendering logic to reflect the selected work week.
- Emitting events when the work week changes, triggering necessary UI updates and data re-renders.

This provides a more flexible and personalized calendar experience.

src/core/CalendarConfig.ts

@@ -35,6 +35,17 @@ interface DateViewSettings {
   showAllDay: boolean; // Show all-day event row
 }
 
+/**
+ * Work week configuration settings
+ */
+interface WorkWeekSettings {
+  id: string;
+  workDays: number[];    // [1,2,3,4,5] for mon-fri
+  dayNames: string[];    // ['Mon','Tue','Wed','Thu','Fri'] 
+  totalDays: number;     // 5
+  firstWorkDay: number;  // 1 = Monday
+}
+
 /**
  * View settings for resource-based calendar mode
  */
@@ -57,6 +68,7 @@ export class CalendarConfig {
   private gridSettings: GridSettings;
   private dateViewSettings: DateViewSettings;
   private resourceViewSettings: ResourceViewSettings;
+  private currentWorkWeek: string = 'standard';
 
   constructor() {
     this.config = {
@@ -422,6 +434,83 @@ export class CalendarConfig {
       date: date
     });
   }
+
+  /**
+   * Get work week presets
+   */
+  private getWorkWeekPresets(): { [key: string]: WorkWeekSettings } {
+    return {
+      'standard': { 
+        id: 'standard',
+        workDays: [1,2,3,4,5], 
+        dayNames: ['Mon','Tue','Wed','Thu','Fri'], 
+        totalDays: 5,
+        firstWorkDay: 1
+      },
+      'compressed': { 
+        id: 'compressed',
+        workDays: [1,2,3,4], 
+        dayNames: ['Mon','Tue','Wed','Thu'], 
+        totalDays: 4,
+        firstWorkDay: 1
+      },
+      'midweek': { 
+        id: 'midweek',
+        workDays: [3,4,5], 
+        dayNames: ['Wed','Thu','Fri'], 
+        totalDays: 3,
+        firstWorkDay: 3
+      },
+      'weekend': { 
+        id: 'weekend',
+        workDays: [6,0], 
+        dayNames: ['Sat','Sun'], 
+        totalDays: 2,
+        firstWorkDay: 6
+      },
+      'fullweek': { 
+        id: 'fullweek',
+        workDays: [0,1,2,3,4,5,6], 
+        dayNames: ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'], 
+        totalDays: 7,
+        firstWorkDay: 0
+      }
+    };
+  }
+
+  /**
+   * Get current work week settings
+   */
+  getWorkWeekSettings(): WorkWeekSettings {
+    const presets = this.getWorkWeekPresets();
+    return presets[this.currentWorkWeek] || presets['standard'];
+  }
+
+  /**
+   * Set work week preset
+   */
+  setWorkWeek(workWeekId: string): void {
+    const presets = this.getWorkWeekPresets();
+    if (presets[workWeekId]) {
+      this.currentWorkWeek = workWeekId;
+      
+      // Update dateViewSettings to match work week
+      this.dateViewSettings.weekDays = presets[workWeekId].totalDays;
+      
+      // Emit work week change event
+      eventBus.emit(EventTypes.WORKWEEK_CHANGED, {
+        workWeekId: workWeekId,
+        settings: presets[workWeekId]
+      });
+    }
+  }
+
+  /**
+   * Get current work week ID
+   */
+  getCurrentWorkWeek(): string {
+    return this.currentWorkWeek;
+  }
 }
 
 // Create singleton instance