fix(discovery): stop auto-firing research on Accept

Accepting a row triggered a background POST to
/admin/markets/<edition>/research. The intent was to "warm up" the
edit page, but the result was discarded (fire-and-forget), the edit
page only renders research from its own form action, and the
backend's 5-minute-per-market cooldown still got set — so the
operator's first manual "Mit KI recherchieren" click hit "Bitte
warte 5 Minuten zwischen Recherche-Aufrufen" instead.

Removes the auto-fire. Research runs on user click. If we want
prefetched suggestions later, that needs server-side caching + a
load-time fetch, not fire-and-forget.

web/src/routes/admin/discovery/+page.server.ts

@@ -160,13 +160,6 @@ export const actions: Actions = {
 				cookies,
 				{ method: 'POST', fetch }
 			);
-			// Fire research asynchronously — don't await, the edit page handles streaming suggestions.
-			void serverFetch(`/admin/markets/${res.data.edition_id}/research`, cookies, {
-				method: 'POST',
-				fetch
-			}).catch(() => {
-				// Silent: the edit page shows a toast if research hasn't completed.
-			});
 			redirect(303, `/admin/maerkte/${res.data.edition_id}/bearbeiten`);
 		} catch (err) {
 			if (err instanceof Response || (err as { status?: number })?.status === 303) throw err;