Make metrics reflect autoscaling policies (Refs #137)

tests/unit/report-workers.test.ts

@@ -34,3 +34,59 @@ it('runs reports off the request thread and invalidates cached history after wri
     expect(changed).toEqual(readMetrics(query, now));
     expect(changed.summary.playerHours).toBeCloseTo((await first).summary.playerHours * 3);
 });
+
+it('refreshes policy signals after policy edits and global pauses without new samples', async () => {
+    const { db } = await import('../../src/lib/server/db/index.js');
+    const { recordMetrics } = await import('../../src/lib/server/fleet/metrics.js');
+    const { metricsReport } = await import('../../src/lib/server/reports/index.js');
+    const now = Date.UTC(2026, 9, 4, 12);
+    vi.spyOn(Date, 'now').mockReturnValue(now);
+    recordMetrics(
+        [{ server: 'one', game: 't5', map: 'Moon', players: 1, capacity: null }],
+        now - 60_000
+    );
+    const query = parseMetricsQuery(new URLSearchParams('days=1'));
+    expect((await metricsReport(query)).maps[0].policy).toBeNull();
+    const settings = {
+        game: 't5',
+        mapSlug: '*',
+        mode: 'create-destroy',
+        minimum: 1,
+        maximum: 1,
+        spares: 1,
+        emptyMinutes: 15
+    };
+    db()
+        .prepare(
+            `INSERT INTO autoscaling_policies
+        (id,game,map_slug,settings,mode,owns_map,updated_at) VALUES(?,?,?,?,?,1,?)`
+        )
+        .run(
+            'moon-policy',
+            't5',
+            '*',
+            JSON.stringify(settings),
+            settings.mode,
+            new Date(now).toISOString()
+        );
+    const atMaximum = (await metricsReport(query)).maps[0];
+    expect(atMaximum.policy?.maximum).toBe(1);
+    expect(atMaximum.noEmptyAtMaximum).toBeCloseTo(1 / 60);
+    db()
+        .prepare('UPDATE autoscaling_policies SET settings=? WHERE id=?')
+        .run(JSON.stringify({ ...settings, maximum: 3 }), 'moon-policy');
+    const belowMaximum = (await metricsReport(query)).maps[0];
+    expect(belowMaximum.policy?.maximum).toBe(3);
+    expect(belowMaximum.noEmptyAtMaximum).toBe(0);
+    expect(belowMaximum.noEmptyBelowMaximum).toBeCloseTo(1 / 60);
+    db()
+        .prepare(
+            "INSERT INTO settings(key,value) VALUES('autoscaling_paused','1') ON CONFLICT(key) DO UPDATE SET value='1'"
+        )
+        .run();
+    expect((await metricsReport(query)).maps[0].policy?.pausedReason).toBeTruthy();
+    db().prepare("UPDATE settings SET value='0' WHERE key='autoscaling_paused'").run();
+    expect((await metricsReport(query)).maps[0].policy?.pausedReason).toBeNull();
+    db().prepare("DELETE FROM autoscaling_policies WHERE id='moon-policy'").run();
+    expect((await metricsReport(query)).maps[0].policy).toBeNull();
+});