radio: Opa's update - Haagse ronde on scanner 1-3, QO-100 net (weekend reminder), antenna tip

- data (scripts/radio-2026-10-27-opa.sql): 145.450 in bank 1 ch 3 (ISS APRS UHF moved to ch 7),
  NL/EN notes for the Haagse ronde (scanner, not the WebSDR: trolls), new QO-100 satellietronde
  (daily 09:30, 10489.700 USB) with its reminder on Sat/Sun only
- migration: radio.nets.remind_days (null = every day of the net); scripts/radio.ts honours it,
  and `upcoming [hours]` prints the day too
- links: BATC/Goonhilly QO-100 WebSDR (via Opa, 27 Oct 2026); PI1DFT note about trolls
- Radioweetjes: Haagse ronde on the scanner, QO-100 net, magnetic antenna on a radiator

src/lib/radio/links.ts

@@ -9,8 +9,8 @@ export type RadioLink = {
 	/** An http(s) URL, or "#anchor" for a section on this page. */
 	url: string;
 	about: Text;
-	/** How it reached us: Opa by email or WhatsApp, or a supporting link we added. */
-	via: 'email' | 'whatsapp' | 'added';
+	/** How it reached us: Opa by email or WhatsApp, from Opa (channel not noted), or a link we added. */
+	via: 'email' | 'whatsapp' | 'opa' | 'added';
 	/** Date Opa sent it (YYYY-MM-DD), when known. */
 	sent?: string;
 	status: LinkStatus;
@@ -19,7 +19,7 @@ export type RadioLink = {
 };
 export type LinkCategory = { id: string; title: Text; links: RadioLink[] };
 
-export const LINKS_CHECKED = '2026-10-24';
+export const LINKS_CHECKED = '2026-10-27';
 
 export const LINK_CATEGORIES: LinkCategory[] = [
 	{
@@ -69,7 +69,22 @@ export const LINK_CATEGORIES: LinkCategory[] = [
 				},
 				via: 'email',
 				status: 'online',
-				sent: '2025-03-07'
+				sent: '2025-03-07',
+				note: {
+					nl: 'Opa raadt deze WebSDR niet meer aan voor de Haagse ronde: trollen verstoren hem daar. Luister op de scanner, bank 1 kanaal 3.',
+					en: 'Opa no longer recommends this WebSDR for the Hague net: trolls disrupt it there. Listen on the scanner, bank 1 channel 3.'
+				}
+			},
+			{
+				title: 'QO-100 WebSDR (BATC / Goonhilly)',
+				url: 'https://eshail.batc.org.uk/nb/',
+				about: {
+					nl: 'Smalband-transponder van satelliet QO-100 (Es\u2019hail-2), voor de QO-100 satellietronde op 10489.700 MHz',
+					en: 'Narrowband transponder of the QO-100 (Es\u2019hail-2) satellite, for the QO-100 satellite net on 10489.700 MHz'
+				},
+				via: 'opa',
+				status: 'online',
+				sent: '2026-10-27'
 			},
 			{
 				title: 'WebSDR Utrecht (PI4UTR)',