- New src/lib/api/moon.js: fetches daily moon_phase from Open-Meteo
(independent of the NWS/Open-Meteo weather source, since NWS has no moon
data), plus pure helpers: moonName (8 phases), illumination fraction, and
nextMoonPhase, which unwraps the ~29.5-day cycle and interpolates the next
quarter boundary (new/first quarter/full/last quarter), returning its name,
date, and days until it.
- New MoonPhaseCard.svelte: renders an SVG moon (two-circle terminator that
correctly shows crescent/quarter/gibbous shapes), the current phase name,
percent illuminated, and the next phase with date. Caches per-location via
an effect; degrades gracefully when unavailable.
- Wired into WeatherDetail between Sun and UV and Temperature Range.
- 11 unit tests for moonName/illumination/interpolation/nextMoonPhase.
- Verified in headless Chromium: card renders, moon shape correct, no errors.
Replace the hidden hover-only native title with a dedicated SourceTooltip
component: a small ⓘ badge rendered inline next to Pressure and UV values
(Current + Details views) that reveals a styled tooltip on hover/focus,
so it is obvious the value came from the non-selected source (Open-Meteo)
instead of requiring discovery by hovering the data.
NWS doesn't publish pressure (its pressure series is empty) or a UV index.
When the selected source is NWS, merge current.pressure_msl, current.uv_index
and daily.uv_index_max from Open-Meteo and tag them via data._fallback so the
Current + Details views show a tooltip noting the value came from the
non-selected source (Open-Meteo) instead of showing 0 hPa / --.
- New Settings > Data source toggle (Open-Meteo global / NWS US); NWS
falls back to Open-Meteo when unavailable or outside its coverage.
- src/lib/api/nws.js: /points -> forecast/hourly/grid normalizer producing
the app's shared shape, with realistic air highs (NWS reports 104 for the
day Open-Meteo over-forecasts at 116); heat-index/feels-like falls back to
air temp since NWS returns apparentTemperature as null here.
- NWS requires a User-Agent contact; email is a build-time Vite env
(VITE_NWS_EMAIL), read from gitignored .env.local, never committed.
- Details view now shows which provider served the data.
- Fixes the identical UTC date-parse shift for NWS naive local times.
- Tests (8) + recorded live fixtures for Rogers County, OK.
