feat(vcs): mark the current worktree in the Worktrees list

The worktree whose path is the window's repository root gets a check before its branch (Current worktree); drive paths compare case-insensitively. Branch names keep their width and the path is cut short instead.

src/features/vcs/common.module.css

@@ -305,6 +305,18 @@
 .manageRowSelected:hover {
   background: var(--bg-list-selected);
 }
+/* A fixed slot, so the names line up whether or not a row is marked. */
+.worktreeMark {
+  display: flex;
+  flex: none;
+  width: 14px;
+  margin-right: -4px;
+}
+/* The branch keeps its width; the path is what gets cut short. */
+.worktreeName {
+  flex: none;
+  max-width: 40%;
+}
 
 .comparisonDialog > [data-dialog-body] {
   display: flex;

src/features/vcs/gitMenuDialogs.tsx

@@ -5,12 +5,13 @@ import type { Branch, MergeOptions, Remote, Worktree } from "@/bindings";
 import { executeAction } from "@/platform/actions";
 import { call, commands } from "@/platform/ipc";
 import { notifications } from "@/workbench/contributions";
-import { Checkbox, Dialog, IconButton, Input, Select, T, type SelectOption } from "@/ui";
+import { Checkbox, Dialog, Icon, IconButton, Input, Select, T, type SelectOption } from "@/ui";
 import { sortLocal, sortRemote } from "./branches";
 import { conflictActions, openConflictsInstead, validateBranchName } from "./branchOps";
 import { confirmDialog, openDialog } from "./dialogs";
 import { errorMessage, runOp, runRemote, saveAll } from "./ops";
 import { currentRepo, loadBranches, refreshNow, repoName, selectRepo, useVcs } from "./store";
+import { isCurrentWorktree } from "./worktrees";
 import styles from "./common.module.css";
 import { tx } from "@/platform/i18n";
 
@@ -660,7 +661,13 @@ export function WorktreesPanel({ className, listClassName }: { className?: strin
             onClick={() => setSelected(w.path)}
             onDoubleClick={() => void executeAction("file.openProjectPath", w.path)}
           >
-            <span className={styles.fileName}>{w.branch ?? (w.head ? w.head.slice(0, 8) : <T>(bare)</T>)}</span>
+            {/* The worktree this window works in, as IDEA marks it. */}
+            <span className={styles.worktreeMark}>
+              {isCurrentWorktree(w.path, repo) && <Icon name="check" size={14} label={tx("Current worktree")} />}
+            </span>
+            <span className={clsx(styles.fileName, styles.worktreeName)}>
+              {w.branch ?? (w.head ? w.head.slice(0, 8) : <T>(bare)</T>)}
+            </span>
             <span className={clsx(styles.fileDir, styles.mono)}>{w.path}</span>
             {(w.main || w.locked || w.prunable) && (
               <span className={styles.fileDir}>{w.main ? "main" : w.locked ? tx("locked") : tx("prunable")}</span>

src/features/vcs/worktrees.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from "vitest";
+import { isCurrentWorktree } from "./worktrees";
+
+describe("isCurrentWorktree", () => {
+  it("matches the repository root this window works in", () => {
+    expect(isCurrentWorktree("/work/app", "/work/app")).toBe(true);
+    expect(isCurrentWorktree("/work/app-wt", "/work/app")).toBe(false);
+    expect(isCurrentWorktree("/work/app/", "/work/app")).toBe(true);
+    expect(isCurrentWorktree("/work/app", null)).toBe(false);
+  });
+
+  it("ignores the drive letter's case and separators on Windows", () => {
+    expect(isCurrentWorktree("c:/Work/app", "C:/Work/app")).toBe(true);
+    expect(isCurrentWorktree("C:\\Work\\app", "C:/Work/app")).toBe(true);
+    // Only drive paths: elsewhere the case is part of the name.
+    expect(isCurrentWorktree("/Work/App", "/work/app")).toBe(false);
+  });
+});

src/features/vcs/worktrees.ts

@@ -0,0 +1,13 @@
+/**
+ * Whether worktree `path` (as `git worktree list` prints it) is the repository root `root`
+ * this window works in. Git prints `C:/…` with the drive in either case, so drive paths
+ * compare case-insensitively; a trailing slash doesn't count.
+ */
+export function isCurrentWorktree(path: string, root: string | null | undefined): boolean {
+  if (!root) return false;
+  const norm = (p: string) => {
+    const s = p.replace(/\\/g, "/").replace(/(.)\/+$/, "$1");
+    return /^[A-Za-z]:\//.test(s) ? s.toLowerCase() : s;
+  };
+  return norm(path) === norm(root);
+}

src/platform/locales/text/zh.json

@@ -2707,6 +2707,7 @@
   "New Worktree…": "新建工作树…",
   "Worktrees…": "工作树…",
   "Worktrees": "工作树",
+  "Current worktree": "当前工作树",
   "New Worktree": "新建工作树",
   "Git Remotes": "Git 远程",
   "Define Remote": "定义远程",