feat: integrate Microsoft Power Apps SDK and enhance email handling

- Added dependency for @microsoft/power-apps to package.json.
- Updated power.config.json to include appId, environmentId, and connection references.
- Implemented sanitisation function for HTML content in App.tsx to prevent XSS.
- Enhanced error handling in email loading and marking as read functionalities.
- Updated email display logic to handle HTML content and previews.
- Refactored OutlookService to use auto-generated service from @microsoft/power-apps.
- Added new methods for sending, marking as read, and deleting emails in OutlookService.
- Updated types for Email to include bodyPreview, isHtml, hasAttachments, and importance.
- Configured Vite to exclude @microsoft/power-apps/data from the build.
- Created .gitignore to exclude build artifacts and environment files.
- Added local development shim for @microsoft/power-apps/data to support local testing.
- Defined type stubs for @microsoft/power-apps/data to facilitate local development.

src/types/index.ts

@@ -5,8 +5,12 @@ export interface Email {
   to: string;
   subject: string;
   body: string;
+  bodyPreview: string;
   receivedAt: string;
   isRead: boolean;
+  isHtml: boolean;
+  hasAttachments: boolean;
+  importance: 'Low' | 'Normal' | 'High';
   folder: 'inbox' | 'sent' | 'drafts' | 'trash';
 }
 
@@ -17,8 +21,10 @@ export interface Folder {
   unreadCount: number;
 }
 
-export interface UserProfile {
-  displayName: string;
-  email: string;
-  avatar?: string;
-}
+/** Maps UI folder ids to Outlook folderPath values */
+export const FOLDER_PATH_MAP: Record<string, string> = {
+  inbox: 'Inbox',
+  sent: 'SentItems',
+  drafts: 'Drafts',
+  trash: 'DeletedItems',
+};

src/types/power-apps.d.ts

@@ -0,0 +1,29 @@
+/**
+ * Type stub for @microsoft/power-apps/data.
+ *
+ * This module is provided by the Power Platform runtime at execution time.
+ * During local development / tsc type-checking it is not installed,
+ * so we declare just enough types for the generated service to compile.
+ */
+declare module '@microsoft/power-apps/data' {
+  export interface IOperationResult<T> {
+    data?: T;
+    error?: { message: string; code?: string };
+  }
+
+  export interface ConnectorOperation {
+    tableName: string;
+    operationName: string;
+    parameters?: unknown;
+  }
+
+  export interface ExecuteRequest {
+    connectorOperation: ConnectorOperation;
+  }
+
+  export interface IClient {
+    executeAsync<TParams, TResult>(request: ExecuteRequest): Promise<IOperationResult<TResult>>;
+  }
+
+  export function getClient(dataSourcesInfo: unknown): IClient;
+}