Update Motion Creative Plugin

Pull the latest version of the motion-creative plugin from GitHub and refresh the local cache.

Step 1: Locate Plugin Paths

Find the marketplace clone and cache directories:

MARKETPLACE_DIR="$HOME/.claude/plugins/marketplaces/motion-creative"
CACHE_BASE="$HOME/.claude/plugins/cache/motion-creative/motion-creative"

If $MARKETPLACE_DIR doesn't exist, tell the user the plugin isn't installed via marketplace and stop.

Step 2: Check Current State