add remove option on parser failed notification

[selfint]

No description provided.

[Copilot]

Pull Request Overview

This PR adds functionality to allow users to remove corrupted parser installations when loading fails. Previously, users could only retry or dismiss error messages when parser installation failed. Now, users can choose to remove a broken parser, with different options presented based on whether the failure was during download or loading.

Key changes:

• Added "Remove" option to error notifications when parser loading fails
• Implemented removeLanguage and askRemoveLanguage functions to handle parser removal
• Removed unused parserFinishedInit promise that was previously used for initialization synchronization
• Enhanced error handling with structured error types that distinguish between download and load failures

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/Installer.ts	Added GetLanguageError type, removeLanguage and askRemoveLanguage functions; updated getLanguage to return structured errors; removed parserFinishedInit references
src/extension.ts	Updated error handling to use new askRemoveLanguage function; added conditional logic to handle download vs load failures; removed parserFinishedInit export
src/editor/CodeBlocksEditorProvider.ts	Updated error dialog to show "Remove" option for load failures and use askRemoveLanguage; improved error message formatting
src/FileTree.ts	Removed parserFinishedInit reference
src/test/suite/Installer.test.ts	Updated error message to use JSON.stringify for consistency
CHANGELOG.md	Documented the new "Remove" option feature

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[Copilot]

Corrected spelling of 'sup-optimal' to 'sub-optimal'.

Suggested change

	// sup-optimal conditional to make tsc happy
	// sub-optimal conditional to make tsc happy

[Copilot]

Missing await keyword. The removeLanguage function performs file system operations (rmSync) that could throw errors. While rmSync is synchronous, the call should be awaited or the function should handle potential errors, especially since this is called from an async context where error handling would be expected.

Suggested change

	removeLanguage(parsersDir, languageId);
	try {
	removeLanguage(parsersDir, languageId);
	} catch (err) {
	const logger = getLogger();
	logger.log(`Failed to remove parser for ${languageId}: ${err}`);
	vscode.window.showErrorMessage(`Failed to remove parser for ${languageId}: ${err}`);
	}

[Copilot]

The removeLanguage function can throw errors during file system operations, but this call is not wrapped in error handling. Consider adding try-catch or propagating errors to inform the user if removal fails.

Suggested change

	Installer.removeLanguage(this.extensionParsersDirPath, languageId);
	try {
	Installer.removeLanguage(this.extensionParsersDirPath, languageId);
	} catch (err) {
	await vscode.window.showErrorMessage(
	`Failed to remove language '${languageId}': ${err instanceof Error ? err.message : String(err)}`
	);
	}