Sky events: payload types for comets, meteor showers, aurora and solar eclipses #870

What the operator sees: the painted sky can draw comets, meteor showers, aurora nights and solar eclipses, but no calendar event can ask for them, so they never appear.

Why: a moon-night event's payload is only {type, moons} with five types (blood, magic, conjunction, eclipse, harvest). The signed sky pane mockup places its other events by more fields: compass point and height, colour, duration, peak hour, meteor rate, comet tail length, and solar vs. lunar eclipse.

What fixing it takes:

• New event payload types and fields on the server, validated like the existing ones.
• An editor for them (the mockup's "how an event of your own appears" editor is the signed design).
• static/js/widgets/sky_events.js then ports the mockup's shower, comet, aurora, custom and solar-eclipse placement; the shader already draws all of them.

Related: #842 (the painted sky), #833 (each sky event's own view).

Generated by Claude Code