Add persistent match history to server pages

tests/unit/leaderboard-ingest.test.ts

@@ -34,6 +34,42 @@ async function matches() {
     }>;
 }
 
+it('records server match counts, unique rejoins, duration, and final round durably', async () => {
+    await report('game_start', 0, [player('a'), player('b')]);
+    await report('round_change', 2, [player('b'), player('c')]);
+    await report('heartbeat', 2, [player('a'), player('c')]);
+    await report('game_end', 7, [player('c')]);
+    await report('game_end', 7, [player('c')]);
+    const { closeDb } = await import('../../src/lib/server/db/index.js');
+    closeDb();
+    const { serverMatchHistory } = await import('../../src/lib/server/fleet/match-history.js');
+    expect(serverMatchHistory(server)).toEqual({ total: 1, matches: [expect.objectContaining({
+        status: 'completed', startPlayers: 2, uniquePlayers: 3, endPlayers: 1,
+        durationMs: 3000, finalRound: 7
+    })] });
+    expect(serverMatchHistory('other')).toEqual({ total: 0, matches: [] });
+});
+
+it('preserves unknown boundaries and distinguishes empty rosters from missing observations', async () => {
+    await report('heartbeat', 5);
+    await report('game_end', 6, []);
+    await report('game_start', 0, []);
+    await report('round_change', 2);
+    await report('game_start');
+    const { serverMatchHistory } = await import('../../src/lib/server/fleet/match-history.js');
+    expect(serverMatchHistory(server).matches).toEqual([
+        expect.objectContaining({ status: 'active', startPlayers: 1, endPlayers: null, durationMs: null, finalRound: null }),
+        expect.objectContaining({ status: 'interrupted', startPlayers: 0, endPlayers: null, durationMs: null, finalRound: null }),
+        expect.objectContaining({ status: 'completed', startPlayers: null, uniquePlayers: 1, endPlayers: 0, durationMs: null, finalRound: 6 })
+    ]);
+    const { GET } = await import('../../src/routes/api/servers/[name]/matches/+server.js');
+    const response = GET({ params: { name: server }, url: new URL('http://localhost/?limit=1') });
+    const body = await response.json();
+    expect(body.total).toBe(3);
+    expect(body.matches).toHaveLength(1);
+    expect(GET({ params: { name: server }, url: new URL('http://localhost/?limit=-1') }).status).toBe(400);
+});
+
 async function records(guid = '2741626') {
     const { db } = await import('../../src/lib/server/db/index.js');
     return db().prepare('SELECT * FROM leaderboard_match_players WHERE guid = ? ORDER BY match_id').all(guid) as Array<{