ARM64 patch to enable worktrees in cc 2.1.50

patch-claude-worktree-arm64.sh

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

EXPECTED_SHA="4e2b23dbf2f97918d5edc95ae1de03d230a66b94d5fa31a57cc673742ec6ae22"
PATCHED_SHA="fcf070c6e28f5649578f5359b4d3d9dce27eaf6768bb3e0300072f0b13b11169"
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 arm64 (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"