Hold Cockpit regional news to the last 24 hours, and tell its states apart

Regional News showed "REGIONAL NEWS UNAVAILABLE" above populated rows and a
static "RECENT" footer over months-old articles. The status banner kept
`display: grid` when hidden, every non-empty answer carried the unavailable
text, and nothing limited or sorted articles by age.

- One window (regionalNewsWindow.js, 24 h): the local proxy asks Google News
  with `when:1d` and GDELT for 24 h, drops undated, older or future-dated
  articles, sorts newest first, and reports newsWindowHours/newsFetchedAt.
- The Cockpit labels four states: fresh (banner hidden, "LAST 24 H"),
  kept after a failed refresh ("CACHED · REFRESH FAILED"), no news in the
  window, and unavailable. The footer lives in the news state, so it
  survives page and tab changes, and the client drops out-of-window rows.
- `.cockpit-brief-status[hidden]` now hides the banner.

src/i18n/locales/de.json

@@ -399,13 +399,14 @@
   "Cycle briefing pages automatically every 9 seconds (Signals → News → Local). Pauses while you hover or focus the panel. Live signal data refreshes continuously either way.": "Briefing-Seiten automatisch alle 9 Sekunden wechseln (Signale → News → Lokal). Pausiert, solange sich der Mauszeiger über dem Bereich befindet oder dieser den Fokus hat. Live-Signaldaten werden in beiden Fällen laufend aktualisiert.",
   "ACQUIRING REGIONAL NEWS": "REGIONALE NEWS WERDEN ERFASST",
   "REGIONAL NEWS UNAVAILABLE": "REGIONALE NEWS NICHT VERFÜGBAR",
+  "CACHED · REFRESH FAILED": "CACHE · AKTUALISIERUNG FEHLGESCHLAGEN",
   "RESOLVING REGION": "REGION WIRD ERMITTELT",
   "REGION UNAVAILABLE": "REGION NICHT VERFÜGBAR",
-  "NO RECENT LOCATION MATCHES": "KEINE AKTUELLEN ORTSTREFFER",
+  "NO NEWS IN THE LAST {hours} H": "KEINE NEWS IN DEN LETZTEN {hours} H",
   "{domain} · {age}": "{domain} · {age}",
   "CLOUD {pct}%": "WOLKEN {pct} %",
   "CLOUD UNKNOWN": "WOLKEN UNBEKANNT",
-  "{source} · LOCATION QUERY": "{source} · ORTSABFRAGE",
+  "{source} · CACHED {age}": "{source} · CACHE {age}",
   "REGIONAL NEWS": "REGIONALE NEWS",
   "CONTEXT STANDBY": "KONTEXT STANDBY",
   "ENABLE GLOBAL CONTEXT FOR PROXIMITY PINGS": "GLOBALEN KONTEXT FÜR NÄHE-PINGS AKTIVIEREN",
@@ -2094,7 +2095,7 @@
   "ADS-B PRIORITY · {status}": "ADS-B-PRIORITÄT · {status}",
   "ADS-B EMERGENCY · {status}": "ADS-B-NOTFALL · {status}",
   "{aircraftClass} · {emergency} · {feedState}": "{aircraftClass} · {emergency} · {feedState}",
-  "{source} · LOCATION QUERY · RECENT": "{source} · ORTSABFRAGE · AKTUELL",
+  "{source} · LAST {hours} H": "{source} · LETZTE {hours} H",
   "Rendered globe frames per second · toggle with `": "Gerenderte Globus-Frames pro Sekunde · umschalten mit `",
   "Ground heights could not be refreshed. Try the file again when the map has loaded.": "Geländehöhen konnten nicht aktualisiert werden. Die Datei erneut laden, wenn die Karte geladen ist.",
   "{count} map objects": {