Merge upstream/main into feature/catalonia-cctv-cameras

Keeps PR #595's Catalonia CCTV pack in sync with upstream's DelDOT
CCTV pack (#699) and the wind/weather doc updates from #617. The
sources.js conflict was a false positive from git's line-based diff
interleaving two structurally similar but independent loader
functions (loadCataloniaSourcesFromOpenData / loadDelDOTSourcesFromOpenData);
resolved by keeping both as complete, separate functions.

Full unit suite passes (4743/4743, 1 pre-existing Node-version skip).

server/providers/cctv/catalog.js

@@ -18,6 +18,7 @@ import {
   loadNswSourcesFromOpenData,
   loadCalgarySourcesFromOpenData,
   loadCataloniaSourcesFromOpenData,
+  loadDelDOTSourcesFromOpenData,
 } from './sources.js';
 
 /** Env kill switch: unset or anything but "0" means enabled. */
@@ -92,6 +93,11 @@ const LIVE_PACKS = [
     enabled: () => envEnabled('CCTV_CATALONIA_ENABLED'),
     load: loadCataloniaSourcesFromOpenData,
   },
+  {
+    name: 'deldot',
+    enabled: () => envEnabled('CCTV_DELDOT_ENABLED'),
+    load: loadDelDOTSourcesFromOpenData,
+  },
 ];
 /**
  * Load CCTV sources from a local JSON file (CCTV_SOURCES_FILE env or default).