Show match demand in metrics (Refs #138)

tests/unit/database-migrations.test.ts

@@ -167,3 +167,41 @@ it('adds policy report invalidation when upgrading a database at version 12', as
     upgraded.prepare("DELETE FROM settings WHERE key='autoscaling_paused'").run();
     expect(revision()).toBeGreaterThan(paused);
 });
+
+it('adds match report invalidation on upgrade without invalidating for score heartbeats', async () => {
+    const { db, closeDb } = await import('../../src/lib/server/db/index.js');
+    const handle = db();
+    for (const table of ['leaderboard_matches', 'leaderboard_match_players'])
+        for (const action of ['INSERT', 'UPDATE', 'DELETE'])
+            handle.exec(`DROP TRIGGER report_metrics_${table}_${action}`);
+    handle.pragma('user_version = 13');
+    closeDb();
+    const upgraded = db();
+    const revision = () =>
+        (
+            upgraded
+                .prepare("SELECT revision FROM report_revisions WHERE topic='metrics'")
+                .get() as { revision: number }
+        ).revision;
+    const before = revision();
+    upgraded.exec(`INSERT INTO leaderboard_matches
+        (id,server,game,map,map_key,map_name,started_at,last_received_at,last_event,last_fingerprint)
+        VALUES(1,'removed','t5','zombie_moon','t5:zombie_moon','Moon',
+            '2026-10-10T12:00:00.000Z','2026-10-10T12:00:00.000Z','game_start','start');`);
+    expect(revision()).toBeGreaterThan(before);
+    const started = revision();
+    upgraded.exec(`INSERT INTO leaderboard_match_players (match_id,guid,first_seen_at,last_seen_at)
+        VALUES(1,'player','2026-10-10T12:00:00.000Z','2026-10-10T12:00:00.000Z');`);
+    expect(revision()).toBeGreaterThan(started);
+    const joined = revision();
+    upgraded.exec(`UPDATE leaderboard_matches SET highest_round=2,last_event='heartbeat',
+        last_received_at='2026-10-10T12:00:30.000Z' WHERE id=1;
+        UPDATE leaderboard_match_players SET kills=10,present=0 WHERE match_id=1;`);
+    expect(revision()).toBe(joined);
+    upgraded.exec("UPDATE leaderboard_matches SET map_name='Custom Moon' WHERE id=1");
+    expect(revision()).toBeGreaterThan(joined);
+    const renamed = revision();
+    upgraded.exec('DELETE FROM leaderboard_matches WHERE id=1');
+    expect(revision()).toBeGreaterThan(renamed);
+    expect(upgraded.prepare('SELECT * FROM leaderboard_match_players').all()).toEqual([]);
+});