feat(data): add seven Brazilian Bike Itaú cities to the GBFS registry

São Paulo, Rio de Janeiro, Salvador, Recife, Porto Alegre, Brasília and
Curitiba run on the same PBSC platform as the existing Austin, Honolulu
and Chattanooga entries, so they need no new feed handling and no proxy
allowlist change — isAllowedGbfsHost already accepts *.publicbikesystem.net.

These are the layer's first stations outside the United States: 1,017
stations across the seven systems.

DATA_SOURCES.md

@@ -35,7 +35,7 @@ How to read this:
 | **City of Austin Open Data** | CCTV camera catalog + frames | City of Austin Open Data Terms of Use | "City of Austin, TX — data.austintexas.gov" |
 | **Caltrans (cwwp2.dot.ca.gov)** | CCTV camera catalogs + frames, California districts | Public Caltrans traffic camera data | "Caltrans — cwwp2.dot.ca.gov" (courtesy) |
 | **TfL Open Data (JamCams)** | CCTV camera catalog + frames, London | [TfL Open Data terms](https://tfl.gov.uk/info-for/open-data-users/) — attribution REQUIRED | "Powered by TfL Open Data. Contains OS data © Crown copyright and database rights" |
-| **GBFS (Lyft / BCycle)** | Bikeshare availability | Per-feed (attribution-only) | Credit the operator (e.g. Austin BCycle) + its `license_url` |
+| **GBFS (Lyft / BCycle / PBSC)** | Bikeshare availability | Per-feed (attribution-only) | Credit the operator (e.g. Austin BCycle, Bike Itaú/Tembici) + its `license_url` |
 | **Radio Browser** | Geolocated internet-radio station directory and station-level tags | Public-domain directory data under PDDL 1.0; individual broadcaster stream terms apply | "Radio Browser" plus a link to the selected broadcaster |
 | **Re:Earth Terrain** (Mapterhorn) | Terrain (keyless globe stacks — OSM etc. — + `/api/terrain/heights` ellipsoidal-height lookups) | Terrain mesh: CC BY 4.0; geoid: EGM2008 (NGA, public domain) | "Terrain (keyless globe stacks): Re:Earth Terrain / Mapterhorn (CC BY 4.0) / EGM2008 (NGA)" |