Implements the profile-stats change (specs/profile-stats):
- getActivityStats(ownerId, { publicOnly }) in activities.server.ts: one indexed
aggregate over stored columns (count, sum distance/ascent/elapsed duration) +
a rolling last-4-weeks count. No cache table, no schema change, no GPX parsing
(design §D1).
- Profile loader computes it scoped to the viewer (public-only for visitors,
full totals for the owner); ProfileStats header renders count · distance ·
ascent · time + "N in the last 4 weeks" via the shared StatRow + stats.ts
formatters; hidden when there are no visible activities.
- i18n journal.profileStats.* in en + de.
Tests: ProfileStats component (jsdom: totals, empty, last-4-weeks toggle);
e2e asserts the owner roll-up counts their activities. typecheck + lint + unit
(journal 318) green; verified in the browser.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Lifetime totals (count · distance · ascent · elapsed time) + a last-4-weeks
count on the profile, viewer-scoped (public-only for visitors, full for the
owner).
Design records the cost decision: compute on the fly with a single aggregate
over stored columns on the owner_id-leading indexes (cheap even for power
users) — no cache table, no schema change — with a documented escape hatch to
a user_activity_stats cache if profiling ever shows it's hot.
Validates with `openspec validate --strict`. Specs only; no code.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
