feat: M3-M7 全模块落地 + 集成接线

- M3 认证/权限/审计/限流 + 全部 REST 接口
- M4 管理面板（MIUIx + 成绩录入/积分榜下钻/大屏控制）
- M5a 大屏页面（六页 + 明细覆盖层 + 缩放适配）
- M6 WebSocket 实时同步中心
- M7 xlsx 导出 + 赛事包 zip + 备份
- 规则包 YAML 导入导出（差异预览）
- 字体 vendor 子集化（4 套 x2 字重）
- 集成：realtime/export/rules 接入 main+httpapi；backup 子命令
- 修复：中间件包装 ResponseWriter 丢失 Hijacker，导致 WS 握手 501

server/internal/rules/settings.go

@@ -0,0 +1,155 @@
+package rules
+
+import (
+	"encoding/json"
+	"sort"
+	"strconv"
+	"strings"
+
+	"git.yeij.top/AskaEth/Scoreboard/server/internal/domain"
+)
+
+// 赛事库 settings 表里的键名；与 migrations/event/0011_seed.sql 保持一致。
+const (
+	settingIndividualToTeamWeight = "standings.individual_to_team_weight"
+	settingTieBreak               = "standings.tie_break"
+	settingMedalCountsTeamEvents  = "standings.medal_counts_team_events"
+	settingShowIndividualBoard    = "standings.show_individual_board"
+	settingShowIndividualMedals   = "standings.show_individual_medals"
+	settingRecordBonusEnabled     = "record_bonus.enabled"
+	settingRecordBonusMode        = "record_bonus.mode"
+	settingRecordBonusLevels      = "record_bonus.levels"
+	settingManualEnabled          = "manual_adjustment.enabled"
+	settingManualReasonRequired   = "manual_adjustment.reason_required"
+)
+
+// settingsFromPack 把规则包里能落到 settings 表的部分拍平成键值对。
+// 破纪录档位库里没有表，用 JSON 存在 record_bonus.levels 里，避免导入时丢配置。
+func settingsFromPack(pack *RulePack) map[string]string {
+	levels, err := json.Marshal(pack.RecordBonus.Levels)
+	if err != nil {
+		levels = []byte("[]")
+	}
+	return map[string]string{
+		settingIndividualToTeamWeight: formatFloat(pack.Standings.IndividualToTeamWeight),
+		settingTieBreak:               strings.Join(pack.Standings.TieBreak, ","),
+		settingMedalCountsTeamEvents:  formatBool(pack.Standings.MedalCountsTeamEventsEnabled()),
+		settingShowIndividualBoard:    formatBool(pack.Standings.ShowIndividualBoardEnabled()),
+		settingShowIndividualMedals:   formatBool(pack.Standings.ShowIndividualMedalsEnabled()),
+		settingRecordBonusEnabled:     formatBool(pack.RecordBonus.Enabled),
+		settingRecordBonusMode:        string(pack.RecordBonus.Mode),
+		settingRecordBonusLevels:      string(levels),
+		settingManualEnabled:          formatBool(pack.ManualAdjustment.Enabled),
+		settingManualReasonRequired:   formatBool(pack.ManualAdjustment.ReasonRequired),
+	}
+}
+
+// settingsKeys 返回固定顺序的键名，保证差异预览与落库顺序稳定。
+func settingsKeys() []string {
+	keys := []string{
+		settingIndividualToTeamWeight,
+		settingTieBreak,
+		settingMedalCountsTeamEvents,
+		settingShowIndividualBoard,
+		settingShowIndividualMedals,
+		settingRecordBonusEnabled,
+		settingRecordBonusMode,
+		settingRecordBonusLevels,
+		settingManualEnabled,
+		settingManualReasonRequired,
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+func standingsFromSettings(m map[string]string) Standings {
+	s := Standings{
+		IndividualToTeamWeight: settingFloat(m, settingIndividualToTeamWeight, 1),
+		TieBreak:               splitList(m[settingTieBreak]),
+		MedalCountsTeamEvents:  BoolPtr(settingBool(m, settingMedalCountsTeamEvents, true)),
+		ShowIndividualBoard:    BoolPtr(settingBool(m, settingShowIndividualBoard, true)),
+		ShowIndividualMedals:   BoolPtr(settingBool(m, settingShowIndividualMedals, true)),
+	}
+	if len(s.TieBreak) == 0 {
+		s.TieBreak = append([]string(nil), DefaultTieBreak...)
+	}
+	return s
+}
+
+func recordBonusFromSettings(m map[string]string) RecordBonus {
+	rb := RecordBonus{
+		Enabled: settingBool(m, settingRecordBonusEnabled, false),
+		Mode:    modeOrDefault(m[settingRecordBonusMode]),
+	}
+	if raw := strings.TrimSpace(m[settingRecordBonusLevels]); raw != "" {
+		var levels []RecordLevel
+		if err := json.Unmarshal([]byte(raw), &levels); err == nil {
+			rb.Levels = levels
+		}
+	}
+	return rb
+}
+
+func manualAdjustmentFromSettings(m map[string]string) ManualAdjustment {
+	return ManualAdjustment{
+		Enabled:        settingBool(m, settingManualEnabled, false),
+		ReasonRequired: settingBool(m, settingManualReasonRequired, true),
+	}
+}
+
+func settingFloat(m map[string]string, key string, def float64) float64 {
+	raw, ok := m[key]
+	if !ok {
+		return def
+	}
+	v, err := strconv.ParseFloat(strings.TrimSpace(raw), 64)
+	if err != nil {
+		return def
+	}
+	return v
+}
+
+func settingBool(m map[string]string, key string, def bool) bool {
+	raw, ok := m[key]
+	if !ok {
+		return def
+	}
+	switch strings.ToLower(strings.TrimSpace(raw)) {
+	case "true", "1", "yes", "on":
+		return true
+	case "false", "0", "no", "off":
+		return false
+	default:
+		return def
+	}
+}
+
+func formatFloat(v float64) string { return strconv.FormatFloat(v, 'g', -1, 64) }
+
+func formatBool(v bool) string {
+	if v {
+		return "true"
+	}
+	return "false"
+}
+
+func splitList(raw string) []string {
+	if strings.TrimSpace(raw) == "" {
+		return nil
+	}
+	parts := strings.Split(raw, ",")
+	out := make([]string, 0, len(parts))
+	for _, p := range parts {
+		if p = strings.TrimSpace(p); p != "" {
+			out = append(out, p)
+		}
+	}
+	return out
+}
+
+func modeOrDefault(raw string) domain.RecordBonusMode {
+	if strings.TrimSpace(raw) == "" {
+		return domain.RecordBonusMax
+	}
+	return domain.RecordBonusMode(strings.TrimSpace(raw))
+}