Workstream B of the usability wave (#2 hints, #3 conditions, #4 errors):
- GET /api/conditions (new backend/app/routes/conditions.py): composes
celestial veil_thinness with the cached NOAA Kp reading; lenient lon
parsing (junk degrades to moon-only, never 422); geomagnetic may be
null on a cold cache. Route tests stub the cache — no live NOAA calls.
- VeilConditions strip in the séance side column: moon glyph + phase,
% lit, veil-thinness phrase, Kp line only when data exists. Polls
every 10 min; renders nothing while loading; no error state.
- ModeHint: per-mode in-fiction one-liner after ~15s idle, suppressed
once the mode's sensor runs this session, dismissal persisted in
localStorage (qm_hint_<mode>). One mount line per panel.
- Error copy upgraded to detect-and-redirect: mic denied points at site
settings and the ouija board/wire; WebUSB-unsupported suggests EVP.
- i18n en/es parity for every new string; coverage-check template
domains extended for the new template-key call sites.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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