I find it interesting that you put the instruction ("animate this") in the system prompt, while the prompt just had the existing SVG and no actual instructions on what to do with it. Anthropic's consumer-facing tools generally don't let you do this, unless maybe you're particularly clever with Claude Code command line flags (you can start Claude Code with a custom system prompt).
Do you think this had a substantial effect on the output?
Sorry, yes, that's what I meant by being "clever with Claude Code command line flags", I guess it's not really that clever. But in general if you just launch Claude Code normally and use it via the interactive CLI, you can't change the system prompt, so most users probably never do it.
Do you think this had a substantial effect on the output?