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trails/openspec/changes/archive/2026-06-12-journal-elevation-profile/specs/journal-elevation-profile/spec.md
Ullrich Schäfer f1cae13605
openspec: archive the detail catch-up changes, sync specs 
Archive the three implemented + merged changes (activity-sport-type,
activity-stats, journal-elevation-profile): their deltas are promoted into
openspec/specs/, the changes move to changes/archive/2026-06-12-*, and the
three new capabilities are added to the CAPABILITIES index.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-12 15:58:17 +02:00

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ADDED Requirements

Requirement: Elevation profile chart on detail pages

The route and activity detail pages SHALL render an elevation profile chart (distance on the x-axis, elevation on the y-axis) with a gradient area fill and a summary showing the highest and lowest points, whenever the activity or route has a usable elevation series. (Ascent and descent are shown in the headline stat row above the chart.)

Scenario: Chart shown for a route with elevation

  • WHEN a user views a route whose GPX contains an elevation series
  • THEN an elevation profile chart is shown with a highest/lowest summary

Scenario: Chart omitted without elevation

  • WHEN an activity's GPX has no usable elevation data
  • THEN no chart is rendered and the existing gain/loss figures remain

Requirement: Chart-to-map highlight

The detail page SHALL highlight the corresponding location on the map when the user points at a position on the elevation chart.

Scenario: Hover chart highlights map

  • WHEN the user moves the pointer along the elevation chart
  • THEN a marker appears on the map at the location matching that distance along the route

Requirement: Map-to-chart highlight

The detail page SHALL highlight the corresponding position on the elevation chart when the user points at the route line on the map.

Scenario: Hover map highlights chart

  • WHEN the user moves the pointer along the route line on the map
  • THEN the elevation chart marks the position matching the nearest point on the route

Requirement: Click chart to center map

The detail page SHALL center the map on the corresponding location when the user clicks a position on the elevation chart, without modifying any data.

Scenario: Click chart pans map

  • WHEN the user clicks a point on the elevation chart
  • THEN the map centers on the matching location
  • AND no route or activity data is changed

Requirement: Localized summary labels

The elevation summary strip SHALL render its labels and units through localized strings.

Scenario: German summary labels

  • WHEN the UI locale is German
  • THEN the highest and lowest labels render in German