feat(shared-sqs): add SQS Console UI (v0.1.4)

- Embedded SPA with Nubes branding (go:embed)
- Admin dashboard: health stats, tenant CRUD, queue listing
- New API: GET /admin/tenants/{id}/queues — tenant queue list with counts
- Route /ui/ serves built-in console
- Auto-refresh every 10s, responsive design

shared-sqs/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))
+}