Merge pull request #1202 from Kiln-AI/sfierro/wk-fix

wt fix

Author: sfierro

.config/wt/start.sh

@@ -26,7 +26,8 @@ export KILN_WEB_URL="http://localhost:$KILN_FRONTEND_PORT"
 
 export KILN_CODER_CMD="claude"
 # user_settings.sh is gitignored, so in worktrees we fall back to the main repo copy
-MAIN_REPO_ROOT="$(git -C "$REPO_ROOT" rev-parse --path-format=absolute --git-common-dir 2>/dev/null | sed 's|/\.git$||')"
+MAIN_REPO_ROOT="$(git -C "$REPO_ROOT" rev-parse --git-common-dir 2>/dev/null || true)"
+MAIN_REPO_ROOT="${MAIN_REPO_ROOT%/.git}"
 if [ -f "$REPO_ROOT/.config/wt/user_settings.sh" ]; then
     # shellcheck source=/dev/null
     source "$REPO_ROOT/.config/wt/user_settings.sh"