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Map tiles: switch to Esri World Light Gray (OSM 403s file://)

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tiles="OpenStreetMap" returned HTTP 403 "referer is required by tile usage
policy" in the target browser — OSM graylists refererless requests and a
karte.html opened via file:// sends no Referer. Esri's Canvas/World_Light_Gray
base + reference layers need neither a key nor a Referer and keep the muted
look. New MAP_TILES / MAP_TILES_LABELS / MAP_TILES_ATTR constants; generate_map
adds them as explicit TileLayers.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Patrick Müller
2026-09-07 22:37:41 +02:00
parent 5b85596a46
commit 5eb60ec2d3
6 changed files with 62 additions and 30 deletions
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docs/architecture.md
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@@ -112,6 +112,6 @@ This is the file to ask for when diagnosing a problem on the user's laptop.
|------------|-----------|-------------------|
| Nominatim (OSM) | geocoding new/edited entries | entries save with blank coords, shown as `⚠ nicht gefunden` |
| CDN (jsdelivr, jquery, cloudflare) | rendering `karte.html` | map page loads blank / unstyled |
| OpenStreetMap tiles (`tile.openstreetmap.org`) | map background | blank/grey tiles |
| Esri tiles (`server.arcgisonline.com`) | map background | blank/grey tiles |
Existing entries that already have coordinates do **not** need the network.