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Colby McHenry
00f4621830
Replaces the scaffold page with the dashboard proper: 19 panels covering every
view of the PostHog dashboard this retires, driven by one filter row.
src/api.ts is the read API CG-12 specified: /api/{meta,summary,timeseries,
breakdown,activation,retention}, all range-scoped, all parameterized against a
closed set of dims and metrics, all shaped labels[] + datasets[] so the frontend
does no arithmetic. Rollups answer everything except the activation funnel,
which needs raw events and says where they start.
The frontend splits into a DOM-free panel registry (public/panels.js) and the
page that mounts it (public/app.js), so the render check can drive the same
registry the browser rendered from. Panels fail alone, refetch dims rather than
flashing, and every chart carries a table twin.
Two numbers are labelled rather than rounded off: range-wide "users" per
dimension is machine-days (the rollups cannot give distinct machines, and
per-day counts are taken as the largest single-event count so one machine's
install + index + usage is not counted three times), and recent activation and
retention cohorts are marked as still-converting instead of drawn as a cliff.
Both colour scales were run through the data-viz validator against the panel
surface, not picked by eye; the results are recorded in public/theme.js.
Verification, all against the committed fixture (12 machines over 10 days, every
expected number worked out by hand from the events, not recorded from a run):
scripts/smoke-api.sh 98 assertions
scripts/render-check.mjs 79 assertions — real Chromium over CDP, no new deps
scripts/smoke-auth.sh 54 assertions (unchanged, still green)
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>