refactor: use git API for worktree operations instead of child_process

- Use repository.state.worktrees to find worktrees for a branch
- Use repository.deleteWorktree() to remove worktrees
- Add Worktree interface to api.d.ts
- Remove env/node/gitWorktree.ts and env/browser/gitWorktree.ts
- Remove webpack alias for gitWorktree

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

src/api/api.d.ts

@@ -53,6 +53,14 @@ export interface Remote {
 	readonly isReadOnly: boolean;
 }
 
+export interface Worktree {
+	readonly path: string;
+	readonly name: string;
+	readonly ref: string;
+	readonly main: boolean;
+	readonly detached: boolean;
+}
+
 export { Status } from './api1';
 
 export interface Change {

src/env/browser/gitWorktree.ts

@@ -60,7 +60,6 @@ import { EventType } from '../common/timelineEvent';
 import { Schemes } from '../common/uri';
 import { AsyncPredicate, batchPromiseAll, compareIgnoreCase, formatError, Predicate } from '../common/utils';
 import { PULL_REQUEST_OVERVIEW_VIEW_TYPE } from '../common/webview';
-import { getWorktreeForBranch as envGetWorktreeForBranch, removeWorktree as envRemoveWorktree } from '../env/node/gitWorktree';
 import { BRANCHES_ASSOCIATED_WITH_PRS, LAST_USED_EMAIL, NEVER_SHOW_PULL_NOTIFICATION, REPO_KEYS, ReposState } from '../extensionState';
 import { git } from '../gitProviders/gitCommands';
 import { IThemeWatcher } from '../themeWatcher';
@@ -2451,18 +2450,29 @@ export class FolderRepositoryManager extends Disposable {
 		return await PullRequestGitHelper.getBranchNRemoteForPullRequest(this.repository, pullRequest);
 	}
 
-	async getWorktreeForBranch(branchName: string): Promise<string | undefined> {
-		try {
-			return await envGetWorktreeForBranch(branchName, this.repository.rootUri.fsPath);
-		} catch (e) {
-			Logger.error(`Failed to get worktree for branch ${branchName}: ${e}`, this.id);
+	getWorktreeForBranch(branchName: string): string | undefined {
+		const worktrees = this.repository.state.worktrees;
+		if (!worktrees) {
+			return undefined;
 		}
-		return undefined;
+		const refsHeadsPrefix = 'refs/heads/';
+		const worktree = worktrees.find(wt => {
+			if (wt.main) {
+				return false;
+			}
+			const ref = wt.ref.startsWith(refsHeadsPrefix) ? wt.ref.substring(refsHeadsPrefix.length) : wt.ref;
+			return ref === branchName;
+		});
+		return worktree?.path;
 	}
 
 	async removeWorktree(worktreePath: string): Promise<void> {
+		if (!this.repository.deleteWorktree) {
+			Logger.error(`deleteWorktree is not available on this repository`, this.id);
+			return;
+		}
 		try {
-			await envRemoveWorktree(worktreePath, this.repository.rootUri.fsPath);
+			await this.repository.deleteWorktree(worktreePath);
 		} catch (e) {
 			Logger.error(`Failed to remove worktree ${worktreePath}: ${e}`, this.id);
 			throw e;

src/env/node/gitWorktree.ts

@@ -336,7 +336,7 @@ export namespace PullRequestReviewCommon {
 				});
 			}
 
-			const worktreePath = await folderRepositoryManager.getWorktreeForBranch(branchInfo.branch);
+			const worktreePath = folderRepositoryManager.getWorktreeForBranch(branchInfo.branch);
 			if (worktreePath) {
 				const preferredWorktreeDeletion = vscode.workspace
 					.getConfiguration(PR_SETTINGS_NAMESPACE)
@@ -526,7 +526,7 @@ export namespace PullRequestReviewCommon {
 			.getConfiguration(PR_SETTINGS_NAMESPACE)
 			.get<boolean>(`${DEFAULT_DELETION_METHOD}.${SELECT_WORKTREE}`, false);
 		if (branchInfo && deleteWorktree) {
-			const worktreePath = await folderRepositoryManager.getWorktreeForBranch(branchInfo.branch);
+			const worktreePath = folderRepositoryManager.getWorktreeForBranch(branchInfo.branch);
 			if (worktreePath) {
 				selectedActions.push({ type: 'worktree', worktreePath });
 			}

src/github/folderRepositoryManager.ts

@@ -349,7 +349,6 @@ async function getExtensionConfig(target, mode, env) {
 						'../env/node/net': path.resolve(__dirname, 'src', 'env', 'browser', 'net'),
 						'../env/node/ssh': path.resolve(__dirname, 'src', 'env', 'browser', 'ssh'),
 						'../../env/node/ssh': path.resolve(__dirname, 'src', 'env', 'browser', 'ssh'),
-						'../env/node/gitWorktree': path.resolve(__dirname, 'src', 'env', 'browser', 'gitWorktree'),
 						'./env/node/gitProviders/api': path.resolve(
 							__dirname,
 							'src',