R4 gap fixed: TimeGroup now accepts scheduledDayChange + actualDayChange props
separately so each time type renders its own independent badge. FlightCard
updated to pass them independently (scheduled vs actual/estimated); expanded
row time block also now shows per-type badges.
R5 tooltip fixed: dayChangeBadgeTooltip() uses string-based date extraction
(no TZ reprojection via new Date()) — avoids viewer-TZ shift for SSR and
cross-TZ correctness. Returns "День" for ±1, DD.MM.YYYY for ±2+.
New shared helper dayChange.ts exports computeDayChange(), dayChangeBadgeTooltip(),
formatDayChangeBadge(). 27 unit tests cover +0/+1/+2/-1/-2, null, malformed
input, month/year boundaries, and per-time-type independence (R4).
R1–R3, R6 confirmed correct (API supplies dayChange per ITimesSet; badge
adjacent to time; hidden when 0). R8 (mobile tooltip suppression) deferred.
Final C-gap sub-feature: calendarRange pure helpers
(getMinDate/getMaxDate/buildDisabledDates/findNextEnabledDate), snap-to-
nearest-enabled effect in FlightsMapFilter, and useGeolocationDefault
hook that pre-fills departure from browser position on mount when no
dep/arr is already set.
Covers the final four Angular-parity gaps: filterRoutes pure helper,
buildBuyTicketUrl + escapeHtml, routesToPolylines/intermediateCityIds
airport→city normalization, and FlightsMapStartPage wiring for the
auto-fallback effect plus departure/arrival buy-ticket popups.
Covers the polyline layer: routesToPolylines pure function, city-code-
based IMapPolyline shape, MapCanvas polyline sync via markerIndexRef
with visibility filtering, intermediate-city tooltip force-open pass.
Captures the data-layer scope for the flights-map rebuild: useDictionaries
hook, parallel fetch of world_regions/countries/cities/airports, transform
rules matching Angular DictionariesService, and the testing contract.
Defines a Playwright-based pipeline for visual screenshot diffing,
behavioral E2E verification, and gap analysis between the Angular
and React implementations. Documents known gaps in flight details,
popular requests logic, and flights map.
@isaacs/ttlcache has no byte cap (only count). A 100MB hard limit needs
lru-cache v10's maxSize + sizeCalculation. Aligns design spec with
Phase 1 master plan contract revision.
Captures the dual-mode Modern.js architecture, strangler-fig phasing,
parity contracts, and customer-requirement mapping so implementation
plans can be derived per phase without re-litigating architectural
decisions.
gnezim