Sun card: moon-phase view after sunset — v0.17.0

[ryanbuiltthat]

What

The sun card keeps its daytime sun-path arc, and now after sunset it flips to a moon view:

• A moon-phase glyph drawn to the current illuminated fraction (all 8 phases).
• The phase name + illumination % (from an optional sensor, or computed from the phase).
• The next sunrise.
• Moonrise / moonset on a second row when those sensors are configured.

Behaviour

• Daytime → the existing sun-path arc, countdown, sunrise/sunset (extracted verbatim into _sunView, unchanged).
• After sunset (below_horizon / elevation ≤ 0) → the moon view, when show_moon is on (default) and a moon-phase sensor is available. Otherwise the arc rests with a moon on the horizon as before.

Config (new)

Key	Default	Notes
show_moon	true	Show the moon view after sunset.
moon_entity	sensor.moon	Moon-phase sensor (the Moon integration). Phase name or numeric.
moonrise_entity	—	Optional moonrise timestamp sensor.
moonset_entity	—	Optional moonset timestamp sensor.
moon_illumination_entity	—	Optional illumination-% sensor; else computed from the phase.

The editor gains a Moon section (switch + four pickers). Moon colours are theme-safe (silver lit path + secondary-text outline), and moon icons use the secondary text colour rather than the accent so the moon reads distinctly from the sun.

Implementation note

moonLitPath(cx, cy, r, k) renders the lit region as an outer semicircle on the lit side plus a terminator half-ellipse of x-radius |cos(2πk)|·r (waxing lights the right; new moon = nothing lit, full = full circle). moonInfo() maps the 8 HA phase names (or a numeric phase) to {label, k}.

Testing

• Verified in Chromium across all 8 phases: moon view active at night, correct lit geometry (first/last quarter = half-width, gibbous > half, full = complete circle, crescents thin), illumination 0→100%, correct phase labels, moonrise/moonset subrow, zero console errors.
• bash build.sh + node test/smoke.js green (added a night + moon fixture and 2 cases). Preview gains a "Sun & Moon" demo, so the showcase picks it up.

VERSION 0.16.5 → 0.17.0.

🤖 Generated with Claude Code

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Generated by Claude Code