Widen seasonal hymn-doxology to cover Marian Saturday and the Assumption octave

getHymnDoxologyId now takes the whole LiturgicalDay (needed for a date-window
check) and checks a feast override for a temporal winner's id too, not just
sanctoral — matching Divinum Officium's own Common-of-the-BVM `Doxology=Nat`
rule, which is why Marian Saturdays get the Nativity doxology regardless of
season. Also ports the source's Aug 16-22 (Assumption octave) hardcoded
Nativity-doxology window, confirmed live not excluded for the Monastic/
Tridentine 1617 track.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AGjUyhUZJaSjiniEmnLdak

src/hours/prime.ts

@@ -30,7 +30,7 @@ function resolvePart(part: HourPart, date: string, day: LiturgicalDay): Resolved
   switch (part.kind) {
     case 'hymn': {
       const body = resolveCommon(part.textRef.id);
-      const doxology = resolveCommon(getHymnDoxologyId(day.season, day.winner, 'hymn-doxology-per-annum'));
+      const doxology = resolveCommon(getHymnDoxologyId(day, 'hymn-doxology-per-annum'));
       return [{ kind: 'hymn', text: appendDoxology(body, doxology) }];
     }
     case 'chapter':