Marc-André Bombeck 861fe7ad0d test(charts): comparisonBaseline data correctness end-to-end ...

Pins the comparison-overlay shift across the edges Marc flagged worry
about. The existing `shiftDailySeriesForward` implementation is correct
— integer-day forward addition, no DST surprises because every input
timestamp is anchored at UTC-noon (well clear of the 02:00-03:00 wall-
clock jump). No production fix needed; this is a regression-floor
suite so a future refactor cannot silently change the contract.

Pinned scenarios:
  - DST forward shift (Mar 31 2024 Berlin spring-forward) — calendar
    day preserved
  - DST backward shift (Oct 27 2024 Berlin fall-back) — calendar day
    preserved
  - Leap-year alignment — Feb 29 2024 + 365 days lands on Feb 28 2025
    (the contract is "365 days ago", not "same calendar date last
    year")
  - Insufficient prior data (60 days history + `lastYear` request) →
    overlay renders empty so the chart drops the comparison cleanly
    without rendering a "kein Vergleich" placeholder (per Marc directive
    2026-05-14)
  - Partial prior-period coverage flags `hasComparisonData = true`
  - Tile-caption math (`averageValue` + `computeComparisonDelta`)
    returns null cleanly when the prior window is empty

2026-05-14 13:23:13 +02:00

..

__tests__

test(charts): comparisonBaseline data correctness end-to-end

2026-05-14 13:23:13 +02:00

bucket-time-series.ts

chore(style): repo-wide prettier sweep before v1.4.6 tag

2026-05-09 02:27:17 +02:00

comparison-shift.ts

style(prettier): sweep formatting across the tree

2026-05-10 11:05:40 +02:00

reduced-motion.ts

style(prettier): sweep formatting across the tree

2026-05-10 11:05:40 +02:00

x-axis-density.ts

style: prettier on v1.4.25 W3 files

2026-05-14 12:07:23 +02:00