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>

frontend/src/generated/examples.ts

@@ -58,9 +58,11 @@ export const EXAMPLES: Record<string, unknown> = {
     "subEnable": false,
     "subEnableRouting": false,
     "subEncrypt": false,
+    "subExpiredTemplate": "",
     "subHideSettings": false,
     "subIncyEnableRouting": false,
     "subIncyRoutingRules": "",
+    "subInfoNodeEnable": false,
     "subJsonAlwaysArray": false,
     "subJsonAutoDetect": false,
     "subJsonEnable": false,
@@ -81,6 +83,7 @@ export const EXAMPLES: Record<string, unknown> = {
     "subSupportUrl": "",
     "subThemeDir": "",
     "subTitle": "",
+    "subTrafficDepletedTemplate": "",
     "subURI": "",
     "subUpdates": 0,
     "tgBotAPIServer": "",
@@ -172,9 +175,11 @@ export const EXAMPLES: Record<string, unknown> = {
     "subEnable": false,
     "subEnableRouting": false,
     "subEncrypt": false,
+    "subExpiredTemplate": "",
     "subHideSettings": false,
     "subIncyEnableRouting": false,
     "subIncyRoutingRules": "",
+    "subInfoNodeEnable": false,
     "subJsonAlwaysArray": false,
     "subJsonAutoDetect": false,
     "subJsonEnable": false,
@@ -195,6 +200,7 @@ export const EXAMPLES: Record<string, unknown> = {
     "subSupportUrl": "",
     "subThemeDir": "",
     "subTitle": "",
+    "subTrafficDepletedTemplate": "",
     "subURI": "",
     "subUpdates": 0,
     "tgBotAPIServer": "",