feat(news): the News layer reads its time from the world clock

Core's catalog passes worldClock.timeFor('news') as the layer's now, so a host that follows the clock for News can show a past time's reports with their ages, window and counts as they were then. Core does not follow the clock for the layer, so it keeps reading the wall clock.

changelog.d/0-news-world-clock.md

@@ -0,0 +1,4 @@
+- The News layer reads its time from the world clock, so a host that follows
+  the clock for News can show a past time's reports with their ages, window and
+  counts as they were then. Nothing changes while the timeline is live
+  (Denis Groshev, #0).

docs/CURRENT-STATE.md

@@ -6692,6 +6692,7 @@ request viewbox and continues searching without that geographic preference.
 ### News (November 2026)
 
 - **What it shows.** Events ▸ **News**: the last 24 hours only, or the fewer hours a server names. Zoomed out, one beacon per hotspot with its count for the window and its trend, and a breathing beacon per developing situation (still under reduced motion). Below 2,500 km (7,500 km with a hotspot chosen), the hotspot outlines with disputed areas dotted and named, and every placed report as a ground-clamped marker: fill is severity (0 grey no physical event, 1 yellow minor, 2 orange significant, 3 red major), the icon is the category, the rim is attestation (solid confirmed, dashed claim, thin single), size grows with sources and the marker fades over the day. Colour never marks a side. Up to ten picture cards (physical events with two or more sources, major or pressing) stand over their markers without overlapping. A selected report's card reads "Source: host ↗" and opens the article.
+- **Time.** The layer reads its time from the world clock (`worldClock.timeFor('news')`, passed as `now` in `src/app/constructCatalog.js`): report ages, the 24-hour window, "today", fading and the pressing and card rules all count from it. Core does not follow the clock for the layer, so this is the wall clock and nothing changes. A host whose news source can answer a past time may follow it for `news`; the layer then shows that time's news as it was then, with ages counted from the timeline.
 - **Panel.** The right-rail NEWS panel (`src/ui/newsPanel.js`, `src/ui/news/`) has a time window at the top (the server's 24 h, or 12, 6, 3 or 1 h; the hotspot counts are read for the chosen window) and two sections. **Conflicts**: hotspot chips with counts, a severity floor (significant and above by default), a category filter, the chosen event, and a continuous feed, newest first. **Local**, while the camera is below 3,000 km: every report in the area at the view centre, newest first, named at the top ("News from …") and outlined on the globe, which then shows those reports instead of the hotspots' news; at sea, reports within 500 km. A disputed area of the bundled list (11, see `src/data/local_data/natural_earth/README.md`), or a territory Natural Earth gives no country code (Somaliland, Northern Cyprus and others), is named as itself and read from no country's outlets; elsewhere Natural Earth's default country lines apply. Each card shows the publisher's picture when the event has one (hotlinked, no referrer, publisher credited), the headline (a model's English headline marked as such), a mono meta line (severity marker, category, place, sources, age), who reported it, attestation and media chips, and the service it came through ("via GDELT Project"). Open, a card plays the post's clip on request. A click flies the camera straight down from 150 km and selects the report.
 - **Notices.** A section whose key the server lacks says "{provider} key required" and names the variable; a refused key says "{provider} refused its key"; a spent daily allowance says "{provider} limit reached for today". The other section keeps working.
 - **Source.** `sources.news` (`createNewsSource`, export `./layers/news/source`) reads same-origin `/api/news/*` with a 15 s timeout, a 4 MiB cap and record-by-record validation; `newsQueryAllowed` lets a host admit exactly the client's requests. Core's local server (`server/providers/news.js`) forwards only those GET requests to `GEV_NEWS_ORIGIN` when it is set.

src/app/constructCatalog.js

@@ -1,6 +1,7 @@
 import { resolveCatalogSources } from './sourceComposition.js';
 import { createWeatherClock } from '../layers/weather/clock.js';
 import { worldClock } from '../time/worldClock.js';
+import { NEWS_LAYER_ID } from '../layers/news/model.js';
 import { createWeatherLayer } from '../layers/weather/index.js';
 import { createApplicationCyclones } from './layers/cyclones.js';
 import { createWindLayer } from '../layers/wind/index.js';
@@ -142,7 +143,12 @@ export function createApplicationCatalog({
         createApplicationDroneAirspace({
           source: sources['drone-airspace'],
         }),
-        createApplicationNews({ source: sources.news }),
+        // Ages, the window and the counts read the world clock: a host that
+        // follows it for the layer shows the news at the time on the timeline.
+        createApplicationNews({
+          source: sources.news,
+          now: worldClock.timeFor(NEWS_LAYER_ID),
+        }),
         createApplicationWildlifeSightings({
           source: sources['wildlife-sightings'],
           groundFloor: surface.groundFloor,