Plugin-related environment variables
From ENV/README.md:
CLAUDE_CODE_PLUGIN_CACHE_DIR— Override the default plugin cache location (~/.claude/plugins/cache).CLAUDE_CODE_PLUGIN_SEED_DIR— Directory to pre-seed plugins at startup.CLAUDE_CODE_PLUGIN_GIT_TIMEOUT_MS— Git clone/pull timeout in milliseconds (default: 30000).CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE— Keep marketplace cache if download fails (default: true).CLAUDE_CODE_PLUGIN_USE_ZIP_CACHE— Cache downloaded plugin ZIPs locally (default: true).CLAUDE_CODE_SYNC_PLUGIN_INSTALL— Wait for plugin install to complete before returning (blocking mode).CLAUDE_CODE_SYNC_PLUGIN_INSTALL_TIMEOUT_MS— Timeout for synchronous plugin install (default: 30000).FORCE_AUTOUPDATE_PLUGINS— Automatically update all plugins to the latest version (default: false).CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL— Disable automatic sync of the official marketplace (default: false).