Add a CLI command to compile chart JSON to SVG

[chen1plus]

Hi! I use Flint via the MCP server and really like that chart specs are human-editable JSON

One pain point: whenever I tweak the spec or data by hand, I have to go back through the agent to re-render the SVG

Would you consider adding a small CLI command, e.g. flint compile chart.json --format svg, so users can compile a saved spec to SVG locally? This would make manual data edits much more convenient

Thanks!

[Chenglong-MS]

yeah that absolutely makes sense! In the progress of working on interactive flint so will probably work this out next week. :)

(or any one in the community to give a hand on this :) and do a PR to the dev branch)