diff --git a/src/resources/extensions/gsd/commands/context.ts b/src/resources/extensions/gsd/commands/context.ts
index 7bbaa5790..f4a5aa423 100644
--- a/src/resources/extensions/gsd/commands/context.ts
+++ b/src/resources/extensions/gsd/commands/context.ts
@@ -13,7 +13,13 @@ export interface GsdDispatchContext {
 }
 
 export function projectRoot(): string {
-  const cwd = process.cwd();
+  let cwd: string;
+  try {
+    cwd = process.cwd();
+  } catch {
+    // cwd directory was deleted (e.g. worktree teardown) — fall back to HOME (#3598)
+    cwd = process.env.HOME ?? "/";
+  }
   const root = resolveProjectRoot(cwd);
   if (root !== cwd) {
     assertSafeDirectory(cwd);