fix: resolve ArkTS compilation errors

- GraphDatabase.ets:
  - Export TimeRangeParams interface
  - Add graph(), snapshot(), queryArchived() methods
  - Add SnapshotData interface
  - Add NameCacheEntry interface, remove duplicates
  - Fix Context import to use named import from @ohos.abilityAccessCtrl

- GraphMemoryService.ets:
  - Import TimeRangeParams from GraphDatabase
  - Import RecordResult from GraphDatabase
  - Add graph(), snapshot(), queryArchived() delegate methods
  - Add timeRange optional param to MemoryRecallParams

- AIAgentService.ets:
  - Fix Context import: named import from @ohos.abilityAccessCtrl
  - Import TimeRangeParams from GraphDatabase instead of GraphMemoryService
  - Add dryRun, keyword, attribute to ToolPropertiesDefinition

- Index.ets:
  - Fix displayCallback type to Callback<number>
  - Add display import

entry/src/main/ets/pages/Index.ets

@@ -2,13 +2,14 @@ import { MainPage } from './MainPage';
 import { SettingsPage } from './SettingsPage';
 import { GraphDatabase } from '../model/GraphDatabase';
 import { ImmersiveTabNavigation } from '../components/ImmersiveTabNavigation';
+import display from '@ohos.display';
 
 @Entry
 @Component
 struct Index {
   @State currentIndex: number = 0;
   private db: GraphDatabase = new GraphDatabase();
-  private displayCallback?: (data: display.Display) => void;
+  private displayCallback?: Callback<number>;
 
   aboutToAppear() {
     this.db.init(getContext(this));