v2 Phase 2: match previews + team profiles

- buildPreviewData.ts: precomputes from 150y of results → h2h.json (825 WC-team
  pairings, full records + recent meetings) + scorers.json (top-10 all-time
  scorers per team). Committed goalscorers.csv.
- server/src/preview.ts: assembles MatchPreview / TeamProfile from three layers —
  historical (h2h, scorers), DB enrichment (ESPN form/lineups/venue), live model
  (W/D/L, xG, odds, Elo). /api/preview/:num + /api/team/:name.
- Client: rich /match/:num page (model expectation, recent form chips, H2H record
  + recent meetings, lineups-or-key-players) and /team/:name profile (Elo, odds,
  standing, fixtures, all-time scorers). Match cards now link to previews;
  cross-linking between matches and teams.
- Verified: Mexico-SA preview (81% W, 2-0, form, H2H 2-1-1, Borgetti 37) and
  Argentina profile (Messi 63) render; 22 tests pass; build clean.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
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import { useEffect, useState } from 'react';
import { Link, useParams } from '@tanstack/react-router';
import { ArrowLeft } from 'lucide-react';
import { Card, CardBody, CardHeader } from '@/components/ui/Card';
import { Badge } from '@/components/ui/Badge';
import { teamFlag } from '@/lib/teams';
import { kickoffDay, kickoffTime } from '@/lib/format';
import type { Fixture, TeamProfile } from '@/lib/types';
const pct = (x: number | null) => (x == null ? '—' : `${(x * 100).toFixed(1)}%`);
function FixtureRow({ f, team }: { f: Fixture; team: string }) {
const isHome = f.home.team === team;
const opp = isHome ? f.away : f.home;
const done = f.status === 'finished' || f.status === 'live';
const us = isHome ? f.homeScore : f.awayScore;
const them = isHome ? f.awayScore : f.homeScore;
const res = done && us != null && them != null ? (us > them ? 'W' : us < them ? 'L' : 'D') : null;
return (
<Link to="/match/$num" params={{ num: String(f.num) }} className="flex items-center gap-2 rounded-md px-2 py-1.5 text-sm hover:bg-elevated">
<span className="w-10 text-xs text-faint">{f.group ? `Grp ${f.group}` : f.round.replace('Round of', 'R')}</span>
<span className="text-faint">{isHome ? 'vs' : '@'}</span>
<span aria-hidden>{opp.team ? teamFlag(opp.team) : '⚽'}</span>
<span className="truncate text-ink">{opp.label}</span>
<span className="ml-auto tnum text-faint">
{done && us != null ? <span className="text-ink">{us}{them}</span> : `${kickoffDay(f.kickoff)} ${kickoffTime(f.kickoff)}`}
</span>
{res && <span className={`grid h-5 w-5 place-items-center rounded text-[11px] font-bold ${res === 'W' ? 'bg-win/20 text-win' : res === 'L' ? 'bg-loss/20 text-loss' : 'bg-draw/20 text-draw'}`}>{res}</span>}
</Link>
);
}
export function TeamProfilePage() {
const { name } = useParams({ strict: false }) as { name: string };
const [profile, setProfile] = useState<TeamProfile | null>(null);
const [failed, setFailed] = useState(false);
useEffect(() => {
let alive = true;
setProfile(null);
setFailed(false);
fetch(`/api/team/${encodeURIComponent(name)}`)
.then((r) => (r.ok ? r.json() : Promise.reject()))
.then((d: TeamProfile) => alive && setProfile(d))
.catch(() => alive && setFailed(true));
return () => { alive = false; };
}, [name]);
if (failed) return <div className="py-16 text-center text-muted">Unknown team. <Link to="/groups" className="text-accent">All teams</Link></div>;
if (!profile) return <div className="h-80 animate-pulse rounded-xl border border-line bg-panel" />;
const s = profile.standing;
return (
<div className="space-y-5">
<Link to="/groups" className="inline-flex items-center gap-1.5 text-sm text-muted hover:text-ink">
<ArrowLeft size={15} /> Groups
</Link>
<Card>
<CardBody className="flex flex-wrap items-center gap-4">
<span aria-hidden className="text-5xl">{teamFlag(profile.team)}</span>
<div>
<h1 className="font-display text-2xl font-extrabold text-ink">{profile.team}</h1>
<div className="mt-1 flex flex-wrap items-center gap-2 text-sm">
{profile.group && <Badge tone="neutral">Group {profile.group}</Badge>}
<Badge tone="muted">Elo {profile.elo}</Badge>
<Badge tone="gold">Title {pct(profile.championOdds)}</Badge>
<Badge tone="accent">Advance {pct(profile.qualifyOdds)}</Badge>
</div>
</div>
{s && (
<div className="ml-auto text-right text-sm">
<div className="text-faint text-xs">Group standing</div>
<div className="tnum text-ink">#{s.rank} · {s.points} pts · {s.won}-{s.drawn}-{s.lost} · GD {s.gd > 0 ? `+${s.gd}` : s.gd}</div>
</div>
)}
</CardBody>
</Card>
<div className="grid gap-5 md:grid-cols-[1.3fr_1fr]">
<Card>
<CardHeader><span className="font-display font-bold text-ink">Fixtures</span></CardHeader>
<CardBody className="space-y-0.5">
{profile.fixtures.map((f) => <FixtureRow key={f.num} f={f} team={profile.team} />)}
</CardBody>
</Card>
<Card>
<CardHeader><span className="font-display font-bold text-ink">All-time top scorers</span></CardHeader>
<CardBody>
{profile.keyPlayers.length ? (
<ol className="space-y-1.5">
{profile.keyPlayers.map((p, i) => (
<li key={p.name} className="flex items-center gap-2 text-sm">
<span className="w-4 text-right text-xs font-bold text-faint">{i + 1}</span>
<span className="truncate text-ink-soft">{p.name}</span>
<span className="tnum ml-auto font-semibold text-ink">{p.goals}</span>
{p.pens ? <span className="text-[11px] text-faint">{p.pens}p</span> : null}
</li>
))}
</ol>
) : <p className="text-sm text-faint">No data.</p>}
</CardBody>
</Card>
</div>
</div>
);
}