Session 51: Complete Team Hub (2234 tests)

Research-depth team view: /team/[abbr] with roster, archetypes, stats, props.

- Team API: mlbStatsAdapter.getTeams/resolveTeam/getTeamRoster (statsapi, abbr→id
  + active roster, cached). teamService.getTeamHub assembles roster → per-player
  season stats (bounded concurrency) + archetype (snapshot grade or classify) +
  tonight's graded props from grades:{sport}; whole hub cached 15min. MLB real;
  NBA/WNBA graceful snapshot roster. GET /api/team/:abbr (404 unknown) + proxy.
- Team Hub page: server page.tsx (generateMetadata) + TeamHub client — header,
  sort (archetype/graded/A-Z), archetype filter chips, roster rows (archetype +
  player link + position + stats + graded props + parlay "+"), "No active props"
  greyed state, loading/error.
- Game cards: team abbreviations are now TeamLinks → /team/:abbr?sport= (green
  hover, stops propagation). Team Hub has "← Back to Slate".

Backend 2215 -> 2234 tests (+19), 190 suites. Web build clean (exit 0).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/services/adapters/mlbStatsAdapter.js

@@ -188,6 +188,42 @@ async function getPlayerStats(name, season = DEFAULT_SEASON) {
   }
 }
 
+/**
+ * All MLB teams (Session 51) → [{ id, abbr, name }]. Cached 24h. Used to map a
+ * UI abbreviation ("NYY") to the statsapi team id.
+ */
+async function getTeams(season = DEFAULT_SEASON) {
+  const url = `${BASE}/teams?sportId=1&season=${season}`;
+  const data = await fetchWithCache(url, `mlbstats:teams:${season}`, 24 * 3600);
+  const teams = (data && Array.isArray(data.teams)) ? data.teams : [];
+  return teams.map((t) => ({ id: t.id, abbr: t.abbreviation || null, name: t.name || null }));
+}
+
+/** Resolve a team abbreviation → { id, abbr, name } or null. */
+async function resolveTeam(abbr, season = DEFAULT_SEASON) {
+  const a = String(abbr || '').toUpperCase();
+  if (!a) return null;
+  const teams = await getTeams(season);
+  return teams.find((t) => String(t.abbr).toUpperCase() === a) || null;
+}
+
+/**
+ * Active roster for a team id (Session 51) → [{ id, name, position, jersey }].
+ * Cached 6h. [] on failure.
+ */
+async function getTeamRoster(teamId, season = DEFAULT_SEASON) {
+  if (!teamId) return [];
+  const url = `${BASE}/teams/${teamId}/roster?rosterType=active&season=${season}`;
+  const data = await fetchWithCache(url, `mlbstats:roster:${teamId}:${season}`, 6 * 3600);
+  const roster = (data && Array.isArray(data.roster)) ? data.roster : [];
+  return roster.map((r) => ({
+    id: r.person?.id ?? null,
+    name: r.person?.fullName ?? null,
+    position: r.position?.abbreviation ?? null,
+    jersey: r.jerseyNumber ?? null,
+  })).filter((p) => p.id && p.name);
+}
+
 module.exports = {
   getScheduleWithPitchers,
   getPlayerGameLog,
@@ -195,5 +231,8 @@ module.exports = {
   getBatterVsPitcher,
   searchPlayer,
   getPlayerStats,
+  getTeams,
+  resolveTeam,
+  getTeamRoster,
   __internals: { BASE, TTL, extractSplits, ymd, DEFAULT_SEASON, normName },
 };