Link to Eurostar search page with pricing; add Bristol departures RTT link

Replace the Eurostar timetable link with the search URL
(eurostar.com/search/uk-en?adult=1&origin=…&destination=…&outbound=…)
so the footer links directly to the page that shows prices for the
specific date and destination.

Add a Bristol Temple Meads → Paddington departures link on RTT alongside
the existing Paddington arrivals link.

Also update "morning service unavailable" badge and tests to reflect the
removal of the morning-only cutoff filter from find_unreachable_morning_eurostars.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app.py

@@ -16,6 +16,12 @@ RTT_PADDINGTON_URL = (
     "?stp=WVS&show=pax-calls&order=wtt"
 )
 
+RTT_BRISTOL_URL = (
+    "https://www.realtimetrains.co.uk/search/detailed/"
+    "gb-nr:BRI/to/gb-nr:PAD/{date}/0000-2359"
+    "?stp=WVS&show=pax-calls&order=wtt"
+)
+
 app = Flask(__name__)
 
 DESTINATIONS = {
@@ -154,8 +160,9 @@ def results(slug, travel_date):
     next_date = (dt + timedelta(days=1)).isoformat()
     travel_date_display = dt.strftime('%A %-d %B %Y')
 
-    eurostar_url = eurostar_scraper.timetable_url(destination) + f"?date={travel_date}"
+    eurostar_url = eurostar_scraper.search_url(destination, travel_date)
     rtt_url = RTT_PADDINGTON_URL.format(date=travel_date)
+    rtt_bristol_url = RTT_BRISTOL_URL.format(date=travel_date)
 
     return render_template(
         'results.html',
@@ -175,6 +182,7 @@ def results(slug, travel_date):
         error=error,
         eurostar_url=eurostar_url,
         rtt_url=rtt_url,
+        rtt_bristol_url=rtt_bristol_url,
         min_connection=min_connection,
         max_connection=max_connection,
         valid_min_connections=sorted(VALID_MIN_CONNECTIONS),