Merge branch 'main' into feat/cctv-model-spec-enrichment

# Conflicts:
#	CHANGELOG.md

CHANGELOG.md

@@ -9,6 +9,24 @@
   estimate and show `SPEC FOV min–max° (CAPABILITY)` beside it (bassem chagra,
   #452).
 
+- Ship a web app manifest and raster home-screen icons, so adding the app to a
+  phone home screen or installing it on desktop uses the God's Eye View mark
+  instead of a blank tile. The icons are generated from `public/logo.svg` by
+  `node scripts/generate-icons.mjs` and committed, so a plain `vite build` needs
+  no image toolchain. The existing SVG favicon still serves the browser tab.
+  Manifest paths are relative to the manifest, so a build served under a path
+  prefix installs and launches inside that prefix.
+
+- Cyclone advisories no longer go dark while NHC publishes an advisory ahead
+  of its nominal time: advisory and position times up to 90 minutes ahead of
+  the server clock are accepted (previously 5 minutes), so the whole feed is
+  not rejected for about half an hour each advisory cycle.
+
+- Flights age out vanished aircraft again. OpenSky's routine position-less rows
+  no longer mark every snapshot partial, which had kept vanished and landed
+  aircraft at full opacity for up to five minutes; those rows retain only their
+  own aircraft, and a likely-landed one still leaves on the landed limit.
+
 - Add WSDOT highway cameras (Washington State) as a keyless CCTV source pack:
   WSDOT's official Travel Center camera layer, with frames registered only on
   WSDOT's own image host (partner-hosted cameras such as Oregon DOT and City of
@@ -73,6 +91,11 @@
   have wound down — CoGo's feed reports no stations and last moved a bike in
   March 2025. The three repointed feeds were verified live.
 
+- Add seven Brazilian Bike Itaú (Tembici) cities to the GBFS bikeshare registry:
+  São Paulo, Rio de Janeiro, Salvador, Recife, Porto Alegre, Brasília and
+  Curitiba (about 1,000 stations in total). These are the layer's first stations
+  in South America.
+
 - Add Bike Share Toronto (1,069 stations) to the bikeshare registry. The system
   publishes the same PBSC GBFS v2 feeds as the Austin, Honolulu and Chattanooga
   entries, so it needs no new plumbing; a registry test now holds every city's