feat(sub): add dummy info node and status configs for subscriptions (#6412)

* feat(settings): add subInfoNodeEnable and status template settings

* feat(sub): add dummy info node and status configs for raw links

* feat(sub): support dummy info node in clash and json subscriptions

* feat(ui): add subscription info node switch and status templates to settings

* style: apply gofumpt formatting

* fix(sub): address review feedback on subscription info node

- Restore GetSubs contract to avoid unintended remark expansions on non-subscription-body calls.
- Exclude dummy info node from Clash PROXY select group when active server nodes exist.
- Track hasEnabledClient and set traffic.Enable in JSON and Clash paths so status tokens evaluate correctly.
- Deterministically sort client emails across subscriptions before selecting primaryEmail.
- Consolidate duplicated info-node evaluation logic into resolveInfoNodeRemark helper.
- Remove redundant pure-getter test from setting_sub_info_node_test.go.

Co-Authored-By: Claude Code <noreply@anthropic.com>

---------

Co-authored-by: Claude Code <noreply@anthropic.com>

internal/web/entity/entity.go

@@ -30,12 +30,15 @@ type AllSetting struct {
 	IpLimitAllowlist  string `json:"ipLimitAllowlist" form:"ipLimitAllowlist"`
 	PanelOutbound     string `json:"panelOutbound" form:"panelOutbound"`
 
-	PageSize                  int    `json:"pageSize" form:"pageSize" validate:"gte=0,lte=1000"`
-	ExpireDiff                int    `json:"expireDiff" form:"expireDiff" validate:"gte=0"`
-	TrafficDiff               int    `json:"trafficDiff" form:"trafficDiff" validate:"gte=0,lte=100"`
-	RemarkTemplate            string `json:"remarkTemplate" form:"remarkTemplate"`
-	SubShowIdentityOnAllLinks bool   `json:"subShowIdentityOnAllLinks" form:"subShowIdentityOnAllLinks"`
-	Datepicker                string `json:"datepicker" form:"datepicker"`
+	PageSize                   int    `json:"pageSize" form:"pageSize" validate:"gte=0,lte=1000"`
+	ExpireDiff                 int    `json:"expireDiff" form:"expireDiff" validate:"gte=0"`
+	TrafficDiff                int    `json:"trafficDiff" form:"trafficDiff" validate:"gte=0,lte=100"`
+	RemarkTemplate             string `json:"remarkTemplate" form:"remarkTemplate"`
+	SubShowIdentityOnAllLinks  bool   `json:"subShowIdentityOnAllLinks" form:"subShowIdentityOnAllLinks"`
+	SubInfoNodeEnable          bool   `json:"subInfoNodeEnable" form:"subInfoNodeEnable"`
+	SubExpiredTemplate         string `json:"subExpiredTemplate" form:"subExpiredTemplate"`
+	SubTrafficDepletedTemplate string `json:"subTrafficDepletedTemplate" form:"subTrafficDepletedTemplate"`
+	Datepicker                 string `json:"datepicker" form:"datepicker"`
 
 	TgBotEnable     bool   `json:"tgBotEnable" form:"tgBotEnable"`
 	TgBotToken      string `json:"tgBotToken" form:"tgBotToken"`