New standalone HTML page (sfm/event_browser.html, ~470 lines, Chart.js)
that lets you browse persisted events from the SeismoDb + WaveformStore.
Companion to the existing live-device viewer at /waveform:
/waveform — connect to a unit and pull events in real time
/events — browse events already stored in the DB
Flow:
1. Page loads → GET /db/units → populate serial dropdown
2. Select serial → GET /db/events?serial=X&limit=500 → event list
3. Click event → GET /db/events/{id}/waveform.json → render
Layout is Instantel-printout-ready: channels stacked vertically in
Tran / Vert / Long / MicL order, trigger line at t=0, peak labels,
clean dark theme. Frames the future PDF-export feature without
needing extra layout work.
Smoke-tested against the dev prod-snapshot — 4 channels render with
correct peaks for K558 events (L=0.3 in/s = the offset-fault peak
we've been chasing all week).
CHANGELOG entry added under [Unreleased] per the v0.20.0 release plan.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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