perf(query): 优化后台手机号精确查询

backend/internal/modules/invitation/repository.go

@@ -877,14 +877,30 @@ func (r *Repository) ListAdminInvitations(ctx context.Context, query AdminInvita
 		Joins("LEFT JOIN users invitee ON invitee.id = ui.invitee_id")
 
 	if p := strings.TrimSpace(query.Phone); p != "" {
-		like := "%" + p + "%"
-		db = db.Where("(inviter.phone LIKE ? OR invitee.phone LIKE ?)", like, like)
+		if isPhoneKeyword(p) {
+			db = db.Where(
+				"(ui.inviter_id = (SELECT id FROM users WHERE phone = ?) OR ui.invitee_id = (SELECT id FROM users WHERE phone = ?))",
+				p,
+				p,
+			)
+		} else {
+			like := "%" + p + "%"
+			db = db.Where("(inviter.phone LIKE ? OR invitee.phone LIKE ?)", like, like)
+		}
 	}
 	if p := strings.TrimSpace(query.InviterPhone); p != "" {
-		db = db.Where("inviter.phone LIKE ?", "%"+p+"%")
+		if isPhoneKeyword(p) {
+			db = db.Where("ui.inviter_id = (SELECT id FROM users WHERE phone = ?)", p)
+		} else {
+			db = db.Where("inviter.phone LIKE ?", "%"+p+"%")
+		}
 	}
 	if p := strings.TrimSpace(query.InviteePhone); p != "" {
-		db = db.Where("invitee.phone LIKE ?", "%"+p+"%")
+		if isPhoneKeyword(p) {
+			db = db.Where("ui.invitee_id = (SELECT id FROM users WHERE phone = ?)", p)
+		} else {
+			db = db.Where("invitee.phone LIKE ?", "%"+p+"%")
+		}
 	}
 	if code := strings.TrimSpace(query.InviteCode); code != "" {
 		db = db.Where("ui.invite_code LIKE ?", "%"+code+"%")
@@ -1008,10 +1024,18 @@ func (r *Repository) adminRebateLedgerBase(ctx context.Context, query AdminRebat
 		db = db.Where("irl.order_no LIKE ?", "%"+o+"%")
 	}
 	if p := strings.TrimSpace(query.InviterPhone); p != "" {
-		db = db.Where("inviter.phone LIKE ?", "%"+p+"%")
+		if isPhoneKeyword(p) {
+			db = db.Where("irl.inviter_id = (SELECT id FROM users WHERE phone = ?)", p)
+		} else {
+			db = db.Where("inviter.phone LIKE ?", "%"+p+"%")
+		}
 	}
 	if p := strings.TrimSpace(query.InviteePhone); p != "" {
-		db = db.Where("invitee.phone LIKE ?", "%"+p+"%")
+		if isPhoneKeyword(p) {
+			db = db.Where("irl.invitee_id = (SELECT id FROM users WHERE phone = ?)", p)
+		} else {
+			db = db.Where("invitee.phone LIKE ?", "%"+p+"%")
+		}
 	}
 	if t := strings.TrimSpace(query.TradeRole); t != "" {
 		db = db.Where("irl.trade_role = ?", t)
@@ -1050,6 +1074,18 @@ func parseAdminRebateDate(value string) (time.Time, bool) {
 	return time.Time{}, false
 }
 
+func isPhoneKeyword(s string) bool {
+	if len(s) != 11 || s[0] != '1' {
+		return false
+	}
+	for i := 0; i < len(s); i++ {
+		if s[i] < '0' || s[i] > '9' {
+			return false
+		}
+	}
+	return true
+}
+
 // ListAdminRebateLedgers 管理后台查询返利流水
 func (r *Repository) ListAdminRebateLedgers(ctx context.Context, query AdminRebateLedgerQuery) ([]map[string]any, int64, error) {
 	if r == nil || r.db == nil {