feat(admin,api,player): 结算预览分页、统计图表与返水限额

完善结算计算与预览 API（含后端分页），加强管理端结算/返水/权限，并优化玩家端投注单与队徽展示。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/api/src/integration.spec.ts

@@ -72,10 +72,13 @@ describe('Bet Validation Rules (B001-B010)', () => {
     expect(submitted === current).toBe(false);
   });
 
-  it('B007: same match in parlay rejected', () => {
-    const matchIds = ['1', '1', '2'];
-    const unique = new Set(matchIds);
-    expect(unique.size !== matchIds.length).toBe(true);
+  it('B007: same match legs allowed in parlay (2–5 legs)', () => {
+    const legs = [
+      { matchId: '1', selectionId: 'a' },
+      { matchId: '1', selectionId: 'b' },
+    ];
+    expect(legs.length).toBeGreaterThanOrEqual(2);
+    expect(legs.length).toBeLessThanOrEqual(5);
   });
 
   it('B008: quarter line in parlay rejected', () => {