feat(sub): modern xray JSON format with unified finalmask editor (#4912)

* feat(sub): add finalmask support to JSON subscriptions

* feat(sub): modern xray JSON format with unified finalmask editor

Drop the legacy JSON subscription format entirely and always emit the
modern xray shape:

- Flatten proxy outbounds (no vnext/servers) for vless/vmess/trojan/
  shadowsocks; hysteria was already flat.
- Express fragment/noise via streamSettings.finalmask instead of the
  legacy direct_out freedom dialer + dialerProxy sockopt.

The global finalmask (tcp/udp masks + quicParams) is stored as a single
setting (subJsonFinalMask) and merged into every generated stream,
replacing the separate subJsonFragment/subJsonNoises/subJsonQuicParams
settings.

Reuse the existing FinalMaskForm (used by inbound/outbound) for the
settings UI via a small bridge component; add a showAll prop so all
TCP/UDP/QUIC sections render for the global case. This supersedes the
hand-rolled Fragment/Noises/quicParams tabs with the full mask editor
(all mask types).

Note: this is a breaking change — JSON subscriptions now require a
recent xray client on the consumer side.

* fix

---------

Co-authored-by: biohazardous-man <biohazardous-man@users.noreply.github.com>
Co-authored-by: MHSanaei <ho3ein.sanaei@gmail.com>

web/service/setting.go

@@ -81,10 +81,9 @@ var defaultValueMap = map[string]string{
 	"subClashURI":                 "",
 	"subClashEnableRouting":       "false",
 	"subClashRules":               "",
-	"subJsonFragment":             "",
-	"subJsonNoises":               "",
 	"subJsonMux":                  "",
 	"subJsonRules":                "",
+	"subJsonFinalMask":            "",
 	"datepicker":                  "gregorian",
 	"warp":                        "",
 	"nord":                        "",
@@ -668,14 +667,6 @@ func (s *SettingService) GetSubClashRules() (string, error) {
 	return s.getString("subClashRules")
 }
 
-func (s *SettingService) GetSubJsonFragment() (string, error) {
-	return s.getString("subJsonFragment")
-}
-
-func (s *SettingService) GetSubJsonNoises() (string, error) {
-	return s.getString("subJsonNoises")
-}
-
 func (s *SettingService) GetSubJsonMux() (string, error) {
 	return s.getString("subJsonMux")
 }
@@ -684,6 +675,10 @@ func (s *SettingService) GetSubJsonRules() (string, error) {
 	return s.getString("subJsonRules")
 }
 
+func (s *SettingService) GetSubJsonFinalMask() (string, error) {
+	return s.getString("subJsonFinalMask")
+}
+
 func (s *SettingService) GetDatepicker() (string, error) {
 	return s.getString("datepicker")
 }