Task group 2 (part b) + verification of elevation-profile-hardening.
compute-days.ts no longer sums every raw point-to-point delta for
cumulative ascent/descent (which overstated day totals the same 20–50%).
It now despikes each segment, runs cumulativeFilteredTotals once over the
despiked track, and maps the running filtered ascent/descent back onto the
flat allPoints indices (carrying forward across ele-less points). Day
totals = cumulative[end] − cumulative[start] therefore match the filtered
route total by construction. DayStage shape + rounding unchanged.
Test: a two-day split over the shared noisy/spiky track reports filtered
(not inflated) per-day ascent, and the day ascents sum exactly to the
whole-route filtered ascent.
Completes the change (11/11). Verified: gpx 112/112; full pnpm typecheck
13/13, lint 13/13, test 11/11 (journal + planner compile unchanged).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Task group 2 (part a) of elevation-profile-hardening — wire the group-1
primitives into the headline stat and the chart.
- computeElevation (parse.ts): despike each segment's elevation sequence,
then take filteredTotals; gain/loss are now noise-filtered (no more
20–50% inflation from per-point jitter), the profile is built from the
despiked data, and additive gainRaw/lossRaw expose the unfiltered sums.
- elevationSeries: despike per segment (no cross-trkseg interpolation)
before downsampling, so the chart and the headline totals derive from
the same cleaned data.
- types.ts: GpxData.elevation gains gainRaw/lossRaw (additive).
Well-formed monotonic climbs are unchanged (steps exceed the 5 m
threshold → filtered == raw); a shared noisy-track test proves jitter is
filtered and a 300 m single-point spike is interpolated out of both the
totals and the chart.
Verified: gpx 111/111; full pnpm typecheck 13/13, lint 13/13, test 11/11
(journal + planner compile with the additive fields).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Task group 1 of elevation-profile-hardening. New pure module
elevation-clean.ts (not yet wired — group 2 does that):
- despike(points): interpolates out isolated peak/pit spikes (opposite-sign
slope outliers both exceeding MAX_SLOPE_PERCENT=100); steep monotonic
terrain (same-sign) is never touched; per-segment, no cross-gap interp.
- filteredTotals(points): hysteresis ascent/descent (NOISE_THRESHOLD_M=5)
that suppresses sub-threshold jitter, returning {gain,loss,gainRaw,lossRaw}.
- cumulativeFilteredTotals(points): running filtered arrays for per-day
splits (day total = cumulative[end] − cumulative[start]).
DESIGN NOTE for review: the spec's task 1.2 says the zero-filtered
fallback should "report raw", but the raw sum-of-deltas re-inflates the
very jitter we remove (a ±2 m wobble sums to several metres) — directly
contradicting task 1.4's "±2 m jitter → 0 totals". Resolved toward the
stated goal: fall back to NET change (end−start), so flat wobble reads ~0
while a genuine small net climb still surfaces. gainRaw/lossRaw still
expose the raw sums.
Verified: gpx typecheck+lint clean, 108/108; full pnpm test 11/11.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add docs/inspirations.md as the durable record of the 2026-07-05/06
prior-art research — per-project learnings with source paths, canonical
credit lines, and the changes each spawned — and extend the
acknowledgment lists in philosophy.md/architecture.md (Organic Maps,
Endurain, wanderer).
New OpenSpec changes (proposal/design/specs/tasks each):
- Organic Maps: elevation-profile-hardening, gpx-parser-robustness,
hiking-time-estimate, poi-index, hiking-foot-profile
- Endurain: account-export, activity-duplicate-review,
fit-parsing-hardening, activity-locations, self-hosting-guide,
activity-privacy-controls
- wanderer: federation-hardening, link-share-tokens
- credits-page (user-visible acknowledgments)
Updated in-flight changes with wanderer prior-art sections:
route-federation, route-discovery.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
