Adds a 6th basemap option ("S2") backed by EOX's free, public,
CORS-open Sentinel-2 cloudless WMTS service. Annual mosaics from 2016
to 2024 (2025/2026 not yet shipped by EOX); 10 m/pixel resolution
good for large-scale rural change detection (deforestation,
greenhouses, halls, agriculture) but not for individual buildings.
Companion to the Wayback basemap shipped earlier — Wayback gives
high-res city detail at irregular snapshot dates, Sentinel-2 gives
predictable yearly cadence at coarse rural-scale resolution.
UI mirrors Wayback: when "S2" is selected the switcher reveals a year
dropdown beneath the basemap row; the map-viewer rebuilds the raster
source with the right EOX layer ID. Default year = latest (2024).
Note on licensing: EOX's 2018+ mosaics are CC BY-NC-SA 4.0 — non-
commercial. The UI surfaces this + the commercial-licence pointer
(cloudless.eox.at). 2016 (s2cloudless) + 2017 are CC BY 4.0, no
non-commercial restriction.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds a 5th basemap option ("Istoric") that loads historical ESRI World
Imagery snapshots from the public Wayback service. Free, CORS-open,
193+ releases dating back to 2014; each release is identified by a
numeric id baked into the tile URL pattern.
How it works:
- wayback-catalog.ts fetches the public waybackconfig.json once per
24h, parses each release's title for an ISO date, and exposes a
newest-first list of { id, date, title, itemUrl }.
- BasemapSwitcher reveals a date dropdown beneath the basemap buttons
when "Istoric" is selected. Auto-picks the latest release on first
show; user can pick any past date.
- map-viewer rebuilds the MapLibre style when basemap=="wayback" with
the user-picked release id patched into the raster source tiles[].
Tile URL format (WMTS, {z}/{y}/{x} not {z}/{x}/{y}):
https://wayback.maptiles.arcgis.com/arcgis/rest/services
/World_Imagery/WMTS/1.0.0/default028mm/MapServer
/tile/<releaseId>/{z}/{y}/{x}
Esri's edge deduplicates identical tiles via 301 → another release id
(MapLibre/browser follows the redirect transparently), so picking a
random old date doesn't always show a different image when nothing
changed in that pixel — that's a feature of Wayback, not a bug.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Claude VM