ECharts Use this skill to build, audit, or fix Apache ECharts charts without turning the task into an option-reference lookup. Match the project's existing setup first; only introduce wrappers or new dependencies when the project has none. Decision Tree Core Workflow 1. Inspect first: find existing ECharts usage, themes, and shared option helpers before writing a new chart. 2. Size the container: the container element must have non-zero width and height before runs; a chart in a display:none or unmounted tab renders blank. 3. Own the lifecycle: one per container, on container size change, on…