fix: parse Wikipedia 12h time format and sort upcoming matches with NULLS LAST

Wikipedia stores match times as "6:00 p.m." (1-digit hour) which didn't
match the \d{2}:\d{2} regex, producing NULL for those matches. Introduced
parseTime12h() to handle 1-2 digit hours + AM/PM and convert to 24h.
Also sort upcomingMatches by NULLS LAST so unscheduled games appear after
timed ones rather than first. Dropped "openfootball" data attribution.

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

lib/graphql/resolvers/index.ts

@@ -134,7 +134,7 @@ export const resolvers = {
             sql`${matches.scoreFtHome} IS NULL`,
             eq(matches.isQualiPlayoff, false),
           ))
-          .orderBy(asc(matches.date), asc(matches.id))
+          .orderBy(asc(matches.date), sql`${matches.timeLocal} ASC NULLS LAST`, asc(matches.id))
           .limit(limit)
         return Promise.all(rows.map(hydrateMatch))
       } catch (e) { if (isMissingTable(e)) return []; throw e }