Patch issue with worktrees

patch-claude-worktree.sh

#!/usr/bin/env bash
set -euo pipefail

EXPECTED_SHA="74042739197c58a4791c1f67414c0d8956639ec2f2e935280872b83d4317be78"
PATCHED_SHA="f098915988a2ac5a5747334147e4893bbca94eacd02bb36ee4c0e7d8f6df1c74"
TARGET="${1:-$(readlink -f "$(which claude)")}"

if [[ ! -f "$TARGET" ]]; then
    echo "Error: file not found: $TARGET" >&2
    exit 1
fi

ACTUAL_SHA=$(sha256sum "$TARGET" | awk '{print $1}')

if [[ "$ACTUAL_SHA" == "$PATCHED_SHA" ]]; then
    echo "Already patched: $TARGET"
    exit 0
fi

if [[ "$ACTUAL_SHA" != "$EXPECTED_SHA" ]]; then
    echo "Error: SHA256 mismatch for $TARGET" >&2
    echo "  Expected: $EXPECTED_SHA" >&2
    echo "  Got:      $ACTUAL_SHA" >&2
    echo "This script only patches Claude Code v2.1.50 (unpatched)." >&2
    exit 1
fi

cp "$TARGET" "$TARGET.bak"
sed -i 's/tengu_worktree_mode",!1/tengu_worktree_mode",!0/g' "$TARGET"

NEW_SHA=$(sha256sum "$TARGET" | awk '{print $1}')
if [[ "$NEW_SHA" != "$PATCHED_SHA" ]]; then
    echo "Error: unexpected SHA after patching, restoring backup" >&2
    mv "$TARGET.bak" "$TARGET"
    exit 1
fi

echo "Patched: $TARGET"
echo "Backup:  $TARGET.bak"