fix: sort upcoming fixtures by UTC kickoff time, not venue local HH:MM

SPLIT_PART sort ignored UTC offsets — a match at 18:00 UTC-7 (01:00 UTC
next day) sorted before 12:00 UTC-4 (16:00 UTC same day). Now computes
the actual UTC timestamp from date + HH:MM + offset and orders by that.

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

lib/graphql/resolvers/index.ts

@@ -134,7 +134,17 @@ export const resolvers = {
             sql`${matches.scoreFtHome} IS NULL`,
             eq(matches.isQualiPlayoff, false),
           ))
-          .orderBy(asc(matches.date), sql`SPLIT_PART(${matches.timeLocal}, ' ', 1) ASC NULLS LAST`, asc(matches.id))
+          .orderBy(
+            sql`CASE
+              WHEN ${matches.timeLocal} LIKE '% UTC%'
+              THEN ${matches.date}::date
+                   + SPLIT_PART(${matches.timeLocal}, ' ', 1)::time
+                   - (REPLACE(SPLIT_PART(${matches.timeLocal}, ' ', 2), 'UTC', '') || ' hours')::interval
+              ELSE ${matches.date}::date
+                   + COALESCE(NULLIF(SPLIT_PART(${matches.timeLocal}, ' ', 1), '')::time, '00:00'::time)
+            END ASC NULLS LAST`,
+            asc(matches.id),
+          )
           .limit(limit)
         return Promise.all(rows.map(hydrateMatch))
       } catch (e) { if (isMissingTable(e)) return []; throw e }