feat: add Statens vegvesen (Norway) road cameras as a CCTV pack

Norway's ~850 working road cameras load from one keyless GeoJSON request
to the agency's OGC API view of its DATEX 3.1 CCTV table, so no DATEX
account is needed. Faulty cameras are dropped, every camera sits under a
"Norway" category, and the ~135 that publish HLS play as live video
through the existing in-memory relay with the still as fallback. Frames
and manifests are pinned to each camera's own path on the agency hosts.

CCTV_VEGVESEN_ENABLED=0 disables the pack, CCTV_VEGVESEN_MAX_SOURCES
caps it (nearest the largest cities first) and CCTV_VEGVESEN_VIDEO=0
keeps stills only. Attributed under NLOD 2.0.

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

server/providers/cctv/constants.js

@@ -236,6 +236,34 @@ export const CALGARY_DOWNTOWN = { lat: 51.0461, lon: -114.0626 };
  * body cannot be buffered without limit. */
 export const CALGARY_MAX_CATALOG_BYTES = 4 * 1024 * 1024;
 
+/** Statens vegvesen (Norway) road cameras: the keyless OGC API Features view
+ * of the official DATEX 3.1 CCTV site table, one GeoJSON request for the whole
+ * country (~900 cameras). The raw DATEX node needs an account; this view does
+ * not. Frames are stills on the agency's camera host. */
+export const DEFAULT_VEGVESEN_CCTV_URL =
+  'https://ogckart-sn1.atlas.vegvesen.no/ogc/features/v1/collections/datex_3_1:CctvSimple/items?f=application/geo%2Bjson&limit=5000';
+/** The only origin Vegvesen camera frames may come from. */
+export const VEGVESEN_IMAGE_ORIGIN =
+  'https://kamera.atlas.vegvesen.no/api/images/';
+/** Live HLS for the ~140 cameras that publish video; only this exact
+ * per-camera manifest path is registered. */
+export const VEGVESEN_VIDEO_URL = (cameraId) =>
+  `https://kamera.vegvesen.no/public/${cameraId}/manifest.m3u8`;
+export const DEFAULT_VEGVESEN_MAX_SOURCES = 1000;
+/** Hard ceiling on the catalog body. The whole country is ~800 KB. */
+export const VEGVESEN_MAX_CATALOG_BYTES = 8 * 1024 * 1024;
+/** Prioritization anchors: the largest cities from south to north, so a cap
+ * keeps national coverage rather than just the capital region. */
+export const NORWAY_ANCHORS = [
+  { lat: 59.9139, lon: 10.7522 }, // Oslo
+  { lat: 60.3913, lon: 5.3221 }, // Bergen
+  { lat: 58.97, lon: 5.7331 }, // Stavanger
+  { lat: 63.4305, lon: 10.3951 }, // Trondheim
+  { lat: 58.1467, lon: 7.9956 }, // Kristiansand
+  { lat: 67.2804, lon: 14.4049 }, // Bodø
+  { lat: 69.6492, lon: 18.9553 }, // Tromsø
+];
+
 /** DelDOT CCTV: one keyless statewide JSON catalog; live video via RTMP-over-HTTP (rtmpt:80). */
 export const DELDOT_CCTV_URL = 'https://tmc.deldot.gov/json/videocamera.json';
 export const DEFAULT_DELDOT_MAX_SOURCES = 300;