Sets up calendar package with core infrastructure

Adds core calendar package components including:
- Base services for events, resources, and settings
- Calendar app and orchestrator
- Build and bundling configuration
- IndexedDB storage setup

Prepares foundational architecture for calendar functionality

packages/calendar/src/features/resource/ResourceRenderer.ts

@@ -0,0 +1,69 @@
+import { IRenderContext } from '../../core/IGroupingRenderer';
+import { BaseGroupingRenderer, IGroupingRendererConfig } from '../../core/BaseGroupingRenderer';
+import { ResourceService } from '../../storage/resources/ResourceService';
+import { IResource } from '../../types/CalendarTypes';
+
+export class ResourceRenderer extends BaseGroupingRenderer<IResource> {
+  readonly type = 'resource';
+
+  protected readonly config: IGroupingRendererConfig = {
+    elementTag: 'swp-resource-header',
+    idAttribute: 'resourceId',
+    colspanVar: '--resource-cols'
+  };
+
+  constructor(private resourceService: ResourceService) {
+    super();
+  }
+
+  protected getEntities(ids: string[]): Promise<IResource[]> {
+    return this.resourceService.getByIds(ids);
+  }
+
+  protected getDisplayName(entity: IResource): string {
+    return entity.displayName;
+  }
+
+  /**
+   * Override render to handle:
+   * 1. Special ordering when parentChildMap exists (resources grouped by parent)
+   * 2. Different colspan calculation (just dateCount, not childCount * dateCount)
+   */
+  async render(context: IRenderContext): Promise<void> {
+    const resourceIds = context.filter['resource'] || [];
+    const dateCount = context.filter['date']?.length || 1;
+
+    // Determine render order based on parentChildMap
+    // If parentChildMap exists, render resources grouped by parent (e.g., team)
+    // Otherwise, render in filter order
+    let orderedResourceIds: string[];
+
+    if (context.parentChildMap) {
+      // Render resources in parent-child order
+      orderedResourceIds = [];
+      for (const childIds of Object.values(context.parentChildMap)) {
+        for (const childId of childIds) {
+          if (resourceIds.includes(childId)) {
+            orderedResourceIds.push(childId);
+          }
+        }
+      }
+    } else {
+      orderedResourceIds = resourceIds;
+    }
+
+    const resources = await this.getEntities(orderedResourceIds);
+
+    // Create a map for quick lookup to preserve order
+    const resourceMap = new Map(resources.map(r => [r.id, r]));
+
+    for (const resourceId of orderedResourceIds) {
+      const resource = resourceMap.get(resourceId);
+      if (!resource) continue;
+
+      const header = this.createHeader(resource, context);
+      header.style.gridColumn = `span ${dateCount}`;
+      context.headerContainer.appendChild(header);
+    }
+  }
+}