feat: granular workspace selection in task history

Allows you to filter tasks not just by all and current, but also by any
historic workspace directory that exists in existing HistoryItem metadata

- Added persistent workspace index with metadata (path, name, missing status, timestamp)
- Created a rich workspace selector UI with filtering and grouping capabilities
- Added visual indicators for missing workspaces (strikethrough)
- Improved loading states and feedback during workspace changes and searches
- Added special workspace paths handling ("all", "current", "unknown")
- Standardized empty/undefined workspace paths to "unknown" for legacy items that do not have workspace stored in their metadata
- Optimized batch processing for better performance

This enhancement provides users with a more intuitive and powerful way to navigate their task history across multiple workspaces.

Signed-off-by: Eric Wheeler <[email protected]>

Author: Eric Wheeler

packages/types/src/history.ts

@@ -70,6 +70,5 @@ export interface HistorySearchOptions {
 	limit?: number
 	workspacePath?: string
 	sortOption?: HistorySortOption
-	showAllWorkspaces?: boolean
 	dateRange?: { fromTs?: number; toTs?: number }
 }

src/core/webview/webviewMessageHandler.ts

@@ -453,7 +453,7 @@ export const webviewMessageHandler = async (
 			const historyResults = await getHistoryItemsForSearch(message.historySearchOptions || {})
 			provider.postMessageToWebview({
 				type: "historyItems",
-				items: historyResults.items,
+				...historyResults,
 				requestId: message.requestId, // Pass the requestId back in the response
 			})
 			break