feat: show all groups including unplayed, add upcoming matches per group

sync.ts: after computing standings from played matches, seed 0-0-0-0 rows
for every team in any group match, so all 12 groups always appear.

/groups: fetch all 2026 matches alongside standings; each group card now
shows results (score), live badge, and upcoming fixtures with local
kickoff time, sorted by UTC kickoff.

/tournaments/[year]: derive group list from union of standings + match
group names, so groups with no played matches still render with their
fixtures.

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

app/groups/page.tsx

@@ -10,6 +10,10 @@ const GROUPS_QUERY = gql`
       groupName pos played won drawn lost goalsFor goalsAgainst goalDiff pts
       team { id name iso2 slug }
     }
+    matches(year: 2026, isQuali: false) {
+      id group date time isLive scoreFt
+      team1 { name iso2 slug } team2 { name iso2 slug }
+    }
   }
 `
 
@@ -20,17 +24,54 @@ interface Standing {
   team: { id: number; name: string; iso2?: string | null; slug: string }
 }
 
+interface MatchRow {
+  id: number; group?: string | null; date?: string | null; time?: string | null
+  isLive: boolean; scoreFt?: number[] | null
+  team1: { name: string; iso2?: string | null; slug: string }
+  team2: { name: string; iso2?: string | null; slug: string }
+}
+
+function utcKickoff(date: string, time: string): number {
+  const m = time.match(/^(\d{2}):(\d{2})(?:\s+UTC([+-]\d+(?:\.\d+)?))?/)
+  if (!m) return new Date(date).getTime()
+  const [y, mo, d] = date.split('-').map(Number)
+  const offsetH = m[3] ? parseFloat(m[3]) : 0
+  return Date.UTC(y, mo - 1, d, parseInt(m[1]) - offsetH, parseInt(m[2]))
+}
+
+function formatKickoff(date: string, time: string | null | undefined): string {
+  if (!time) return new Date(date + 'T00:00:00').toLocaleDateString('en-GB', { weekday: 'short', day: 'numeric', month: 'short' })
+  const ms = utcKickoff(date, time)
+  const local = new Date(ms)
+  const today = new Date()
+  const tomorrow = new Date(today); tomorrow.setDate(today.getDate() + 1)
+  const isToday = local.toDateString() === today.toDateString()
+  const isTomorrow = local.toDateString() === tomorrow.toDateString()
+  const day = isToday ? 'Today' : isTomorrow ? 'Tomorrow'
+    : local.toLocaleDateString('en-GB', { weekday: 'short', day: 'numeric', month: 'short' })
+  return `${day} · ${local.toLocaleTimeString('en-GB', { hour: '2-digit', minute: '2-digit' })}`
+}
+
 export default function GroupsPage() {
   const { data, loading } = useQuery(GROUPS_QUERY, { pollInterval: 60_000 })
 
   useEffect(() => { document.title = 'Group Stage · World Cup' }, [])
 
   const standings: Standing[] = data?.groupStandings ?? []
+  const allMatches: MatchRow[] = data?.matches ?? []
+
   const byGroup = standings.reduce<Record<string, Standing[]>>((acc, s) => {
     acc[s.groupName] = [...(acc[s.groupName] ?? []), s]
     return acc
   }, {})
 
+  const matchesByGroup = allMatches
+    .filter(m => m.group)
+    .reduce<Record<string, MatchRow[]>>((acc, m) => {
+      acc[m.group!] = [...(acc[m.group!] ?? []), m]
+      return acc
+    }, {})
+
   const groups = Object.entries(byGroup).sort(([a], [b]) => a.localeCompare(b))
 
   return (
@@ -41,14 +82,14 @@ export default function GroupsPage() {
       </div>
 
       {loading && !data && (
-        <div className="grid grid-cols-[repeat(auto-fill,minmax(268px,1fr))] gap-3.5">
+        <div className="grid grid-cols-[repeat(auto-fill,minmax(300px,1fr))] gap-3.5">
           {Array.from({ length: 12 }).map((_, i) => (
-            <div key={i} className="h-56 rounded-2xl animate-pulse bg-card" />
+            <div key={i} className="h-72 rounded-2xl animate-pulse bg-card" />
           ))}
         </div>
       )}
 
-      <div className="grid grid-cols-[repeat(auto-fill,minmax(268px,1fr))] gap-3.5">
+      <div className="grid grid-cols-[repeat(auto-fill,minmax(300px,1fr))] gap-3.5">
         {groups.map(([groupName, rows]) => {
           const sorted = [...rows].sort((a, b) => {
             if (b.pts !== a.pts) return b.pts - a.pts
@@ -56,12 +97,28 @@ export default function GroupsPage() {
             return b.goalsFor - a.goalsFor
           })
           const letter = groupName.replace('Group ', '')
+
+          const groupMatches = (matchesByGroup[groupName] ?? [])
+            .sort((a, b) => {
+              if (!a.date) return 1
+              if (!b.date) return -1
+              const ta = a.time ? utcKickoff(a.date, a.time) : new Date(a.date).getTime()
+              const tb = b.time ? utcKickoff(b.date!, b.time) : new Date(b.date!).getTime()
+              return ta - tb
+            })
+          const played = groupMatches.filter(m => m.scoreFt)
+          const upcoming = groupMatches.filter(m => !m.scoreFt && !m.isLive)
+          const live = groupMatches.filter(m => m.isLive)
+
           return (
             <div key={groupName} className="glass-card">
+              {/* Header */}
               <div className="px-4 py-3 border-b border-green/10"
                 style={{ background: 'linear-gradient(90deg,color-mix(in srgb,var(--color-green) 12%,transparent) 0%,color-mix(in srgb,var(--color-green) 4%,transparent) 100%)' }}>
                 <span className="font-['Bebas_Neue'] text-[28px] text-green tracking-[0.05em]">GROUP {letter}</span>
               </div>
+
+              {/* Standings */}
               <div className="grid px-4 py-2 text-[9px] text-green-muted tracking-[0.1em] uppercase"
                 style={{ gridTemplateColumns: '1fr 22px 22px 22px 22px 22px 30px', gap: '3px' }}>
                 <span>Team</span>
@@ -87,6 +144,62 @@ export default function GroupsPage() {
                   </div>
                 </Link>
               ))}
+
+              {/* Live matches */}
+              {live.length > 0 && (
+                <div className="border-t border-green/10 px-4 py-2.5 space-y-1.5">
+                  {live.map(m => (
+                    <Link key={m.id} href={`/tournaments/2026#match-${m.id}`}>
+                      <div className="flex items-center gap-2 py-1 hover:opacity-80">
+                        <span className="text-[9px] font-bold text-green-light tracking-wider animate-pulse">LIVE</span>
+                        <TeamFlag name={m.team1.name} iso2={m.team1.iso2} size="sm" />
+                        <span className="text-[12px] text-text font-medium">{m.team1.name}</span>
+                        <span className="text-[11px] text-green-muted mx-0.5">vs</span>
+                        <span className="text-[12px] text-text font-medium">{m.team2.name}</span>
+                        <TeamFlag name={m.team2.name} iso2={m.team2.iso2} size="sm" />
+                      </div>
+                    </Link>
+                  ))}
+                </div>
+              )}
+
+              {/* Results */}
+              {played.length > 0 && (
+                <div className="border-t border-green/10 px-4 py-2.5 space-y-1">
+                  {played.map(m => (
+                    <Link key={m.id} href={`/tournaments/2026#match-${m.id}`}>
+                      <div className="flex items-center gap-2 py-1 text-[12px] hover:opacity-80">
+                        <TeamFlag name={m.team1.name} iso2={m.team1.iso2} size="sm" />
+                        <span className="text-green-sec truncate flex-1">{m.team1.name}</span>
+                        <span className="font-['Bebas_Neue'] text-[15px] text-green tabular-nums">
+                          {m.scoreFt![0]}–{m.scoreFt![1]}
+                        </span>
+                        <span className="text-green-sec truncate flex-1 text-right">{m.team2.name}</span>
+                        <TeamFlag name={m.team2.name} iso2={m.team2.iso2} size="sm" />
+                      </div>
+                    </Link>
+                  ))}
+                </div>
+              )}
+
+              {/* Upcoming */}
+              {upcoming.length > 0 && (
+                <div className="border-t border-green/[6%] px-4 py-2.5 space-y-1">
+                  {upcoming.map(m => (
+                    <Link key={m.id} href={`/tournaments/2026#match-${m.id}`}>
+                      <div className="flex items-center gap-2 py-1 text-[12px] hover:opacity-80">
+                        <TeamFlag name={m.team1.name} iso2={m.team1.iso2} size="sm" />
+                        <span className="text-green-sec truncate flex-1">{m.team1.name}</span>
+                        <span className="text-[10px] text-green-muted whitespace-nowrap tabular-nums">
+                          {m.date ? formatKickoff(m.date, m.time) : '–'}
+                        </span>
+                        <span className="text-green-sec truncate flex-1 text-right">{m.team2.name}</span>
+                        <TeamFlag name={m.team2.name} iso2={m.team2.iso2} size="sm" />
+                      </div>
+                    </Link>
+                  ))}
+                </div>
+              )}
             </div>
           )
         })}