feat(sub): add Incy client integration and routing tab

Add an Incy quick-import button (incy://add) to the Android and iOS app menus on the subscription page, and a new Incy settings tab with routing enable + rules. Incy routing is delivered by injecting an incy://routing/onadd line into the raw subscription body, avoiding a collision with Happ's Routing header. Includes backend settings, regenerated OpenAPI/zod schemas, and translations for all locales.

internal/web/service/setting.go

@@ -78,6 +78,8 @@ var defaultValueMap = map[string]string{
 	"subEnableRouting":            "false",
 	"subRoutingRules":             "",
 	"subHideSettings":             "false",
+	"subIncyEnableRouting":        "false",
+	"subIncyRoutingRules":         "",
 	"subListen":                   "",
 	"subPort":                     "2096",
 	"subPath":                     "/sub/",
@@ -709,6 +711,14 @@ func (s *SettingService) GetSubHideSettings() (bool, error) {
 	return s.getBool("subHideSettings")
 }
 
+func (s *SettingService) GetSubIncyEnableRouting() (bool, error) {
+	return s.getBool("subIncyEnableRouting")
+}
+
+func (s *SettingService) GetSubIncyRoutingRules() (string, error) {
+	return s.getString("subIncyRoutingRules")
+}
+
 func (s *SettingService) GetSubListen() (string, error) {
 	return s.getString("subListen")
 }