From 8ad6c7246011520c674a8e13cf6629f097d4e19b Mon Sep 17 00:00:00 2001
From: kamiya <kamiya@gv1157.local>
Date: Wed, 10 Jun 2026 14:37:33 +0900
Subject: [PATCH] fix: Replace bash4-only lowercase expansion with bash3.2
 compatible tr

${var,,} is a bash 4.0+ feature not available in bash 3.2 (macOS default).
Replace with portable POSIX-compatible tr '[:upper:]' '[:lower:]'.

Fixes startup failure on macOS where /bin/bash is 3.2:
  lib/cli_adapter.sh: bad substitution
---
 lib/cli_adapter.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/cli_adapter.sh b/lib/cli_adapter.sh
index 4cc4fb7a2..f8d9faf28 100644
--- a/lib/cli_adapter.sh
+++ b/lib/cli_adapter.sh
@@ -26,7 +26,7 @@ CLI_ADAPTER_ALLOWED_CLIS="claude codex copilot kimi opencode antigravity"
 # CLI種別の互換aliasを正規名へ正規化する。
 _cli_adapter_normalize_cli_type() {
     local cli_type="${1:-}"
-    cli_type="${cli_type,,}"
+    cli_type="$(echo "$cli_type" | tr '[:upper:]' '[:lower:]')"
     case "$cli_type" in
         gemini|agy) echo "antigravity" ;;
         *)          echo "$cli_type" ;;