feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

internal/tg/bot_test.go

@@ -0,0 +1,14 @@
+package tg
+
+import (
+	"testing"
+
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api/v5"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestTelegramAPIEndpoint(t *testing.T) {
+	assert.Equal(t, tgbotapi.APIEndpoint, telegramAPIEndpoint(""))
+	assert.Equal(t, "https://api.telegram.org/bot%s/%s", telegramAPIEndpoint("https://api.telegram.org"))
+	assert.Equal(t, "https://proxy.example.com/telegram/bot%s/%s", telegramAPIEndpoint("https://proxy.example.com/telegram/"))
+}