feat(editor): calendar view for database block (#14984)

fix #13663


#### PR Dependency Tree


* **PR #14984** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Calendar view for database blocks (month layout, entry cards,
external-source support)
  * Workspace calendar integration and new slash-menu "Calendar View"

* **Improvements**
* Create/manage database rows from calendar UI; preserve durations when
moving/resizing ranges
* Drag-and-drop, drop-preview, and hit-testing support for calendar and
docs
  * Redesigned in-menu View settings with multi-page navigation
  * Context-menu input autofocus toggle and conditional back-navigation

* **Tests**
* New unit and E2E suites covering calendar layout, interactions,
sources, and slash-menu integration
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

blocksuite/affine/blocks/database/src/database-block.ts

@@ -34,6 +34,7 @@ import {
   type SingleView,
   uniMap,
 } from '@blocksuite/data-view';
+import { CalendarExternalSourceProvider } from '@blocksuite/data-view/view-presets';
 import { widgetPresets } from '@blocksuite/data-view/widget-presets';
 import { IS_MOBILE } from '@blocksuite/global/env';
 import { Rect } from '@blocksuite/global/gfx';
@@ -150,6 +151,14 @@ export class DatabaseBlockComponent extends CaptionedBlockComponent<DatabaseBloc
             config
           );
         });
+      this.std.provider
+        .getAll(CalendarExternalSourceProvider)
+        .forEach(source => {
+          dataSource.serviceSet(
+            CalendarExternalSourceProvider(source.id),
+            source
+          );
+        });
     });
     const id = currentViewStorage.getCurrentView(this.model.id);
     if (id && dataSource.viewManager.viewGet(id)) {
@@ -293,6 +302,12 @@ export class DatabaseBlockComponent extends CaptionedBlockComponent<DatabaseBloc
       widgetPresets.tools.viewOptions,
       widgetPresets.tools.tableAddRow,
     ],
+    calendar: [
+      widgetPresets.tools.filter,
+      widgetPresets.tools.search,
+      widgetPresets.tools.viewOptions,
+      widgetPresets.tools.tableAddRow,
+    ],
   });
 
   private readonly viewSelection$ = computed(() => {
@@ -427,6 +442,7 @@ export class DatabaseBlockComponent extends CaptionedBlockComponent<DatabaseBloc
         headerWidget: this.headerWidget,
         onDrag: this.onDrag,
         clipboard: this.std.clipboard,
+        dnd: this.std.dnd,
         notification: {
           toast: message => {
             const notification = this.std.getOptional(NotificationProvider);