chore: initial import from sless/shared-sqs (v0.1.14)

- Standalone SQS-service repository
- Multi-tenant message queue service, AWS SQS compatible
- Based on GoAws, with mutable tenants, auth, WebUI, Redis persistence
- Ready for independent development and deployment
- See doc/ and README.md for architecture and usage

app/ui/embed.go

@@ -0,0 +1,17 @@
+// app/ui/embed.go
+// Встраивание и раздача UI (SPA) для shared-sqs console
+// Created: 2026-04-10
+package ui
+
+import (
+	"embed"
+	"net/http"
+)
+
+//go:embed index.html
+var content embed.FS
+
+// Handler — возвращает http.Handler, раздающий встроенный index.html
+func Handler() http.Handler {
+	return http.FileServer(http.FS(content))
+}