Merge origin/main: Panoramax, bikeshare Norway/Detroit, cloud filter strength, Overpass cache

Conflicts:
- KartaView viewer moved into the shared photoViewer.js on main; its
  labels now take the provider name ("{name} street-level photo") and
  are translated there.
- Weather: main's cloud filter strength slider, with its labels in t().
- Street Level caption: translated creator line plus main's licence.

Panoramax status and error texts are marked like KartaView's, and
"Panoramax answered HTTP {status}" gets a template in the panel and the
layer row. Catalogs: es/ru 2553 messages each, complete.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+- Overpass and military-installation disk caches no longer serve answers from a
+  previously configured `OVERPASS_UPSTREAMS` instance after it is repointed.
+
 - A Radio Browser mirror answering 204, 205 or 304, or a status outside
   200–599, no longer crashes the local dev/preview server. Null-body statuses
   get an empty body; anything else that cannot become a response fails that
@@ -58,6 +61,10 @@
 
 - Regional articles retain unknown publication times when compact source dates do not identify a real calendar instant.
 
+- Add Detroit (MoGo), Pittsburgh (POGOH), Aspen (WE-cycle) and Kona & Hilo
+  (HIBike) to the GBFS bikeshare registry, the layer's first stations in
+  Michigan.
+
 - Treat explicitly current, complete empty vessel coverage as a successful update,
   clearing obsolete contacts while retaining stale or incomplete snapshots.
 
@@ -153,6 +160,36 @@
 
 ## [Unreleased]
 
+- Satellite clouds keep Clouds only / Full as quick endpoints and add a continuous
+  cloud-filter slider: 0% is Full, 100% is the existing brightness key, and
+  intermediate values blend the keyed alpha. The slider commits on release to
+  avoid restaging imagery for every drag event. Filter percentages round-trip in
+  share links; legacy mode codes retain their old endpoint meanings. Background
+  panel refreshes preserve the pending drag value until release. Contributed by
+  [NotProniss](https://github.com/NotProniss) (#1084).
+
+- Street Level: Panoramax is the fourth provider, keyless. Light its chip
+  (orange; off by default, one provider at a time): from orbit dots show
+  where the federated commons has pictures, and below about 60 km its
+  sequences draw as lines from `api.panoramax.xyz` vector tiles. A click on a
+  line opens that sequence's picture nearest the click without moving the
+  camera, flat or 360°, with cones along the sequence around it and ‹ › /
+  ← → following the picture's own links. The 360° and since filters apply,
+  in the lines and in the lookup. The caption names each picture's author
+  and licence (CC BY-SA 4.0, Licence Ouverte 2.0…) and links to it in the
+  Panoramax viewer. HD originals load once, only when the viewer is wider
+  than the 2,048 px version (a panorama: expanded), and every download stops
+  when the photo changes; an image whose header declares more than 64 MP is
+  refused before it decodes. Share links carry it as
+  `0.m.0_0.r.google-0*kartaview-0*panoramax-1` (`0.m.0_0.r.panoramax-1` works
+  too). KartaView's photo viewer
+  is now shared (`photoViewer.js`, `panorama.js`); in it, for KartaView too,
+  Esc clears the selected drive before it collapses the panel. Lines are
+  simplified and drawn within a point budget (a tile's unsimplified lines
+  over Paris hung the tab), decoded in slices so the globe keeps moving,
+  and kept; the cones' tiles have their own connection, and the open
+  picture's tile draws its cones before its neighbours arrive.
+
 - Flights and Military Flights highlight emergency transponder broadcasts in
   fleet billboards, 3D models and Cockpit contacts. Colors update when a status
   starts or clears. Emergency squawks outrank ADS-B priority statuses; GEV
@@ -235,6 +272,17 @@
   panel, resize it from any edge or corner, and double-click the header to dock
   it again. The position persists across reloads.
 
+- Add Norway's city bikes to the Bike Share layer: Oslo, Bergen and
+  Trondheim Bysykkel (Urban Sharing), Kolumbus Bysykkel in Stavanger and
+  Farte Bysykkel in Skien/Porsgrunn (Entur Mobility), and Bysykkel
+  Lillestrøm (JCDecaux), about 760 stations in all. Every feed is keyless
+  GBFS. `gbfs.urbansharing.com`, `api.entur.io` and `api.cyclocity.fr` join
+  the proxy allowlist; the last two are kept to their GBFS paths. The proxy
+  now sends `Client-Identifier: gods-eye-view` on every request and
+  `ET-Client-Name: gods-eye-view-bikeshare` to Entur, as the operators ask,
+  and accepts Entur's extensionless feed paths. Attributed under NLOD and
+  Licence Ouverte. `get_bike_share` covers the six systems too.
+
 - Add Norway's road cameras from Statens vegvesen as a CCTV pack. The camera
   list is one keyless GeoJSON request to the agency's OGC API view of its
   DATEX 3.1 CCTV table, so no DATEX account is needed. Every working camera