[SDUI][P2] Schema configurability for charts & alt list views

[xuyushun441-sys]

Context

Charts and the kanban/calendar/gantt/map views render but their runtime customization is limited — chart config is largely read-only, and the alt views rely on config carried in the legacy list-view model.

Goal

Increase the schema-driven configurability of charts and the alternate list visualizations so they can be authored/edited consistently with the rest of SDUI.

Scope

• Expose chart spec (type, axes, series, aggregation) as editable schema with a config panel.
• Ensure kanban/calendar/gantt/map options are first-class in the (new) list PageSchema.

Acceptance

• Chart visualization is editable via a config panel and persists
• Alt list viewtypes carry their options in the schema, not ad-hoc config