http: expose GET /api/version

internal/server/http/server.go

@@ -123,6 +123,7 @@ func (s *Server) routes(r chi.Router) {
 	r.Post("/api/agents/announce", s.handleAnnounce)
 	r.Get("/agent/binary", s.handleAgentBinary)
 	r.Get("/install/*", s.handleInstallAsset)
+	r.Get("/api/version", s.handleVersion)
 	if s.deps.Hub != nil {
 		r.Mount("/ws/agent", ws.AgentHandler(ws.HandlerDeps{
 			Hub:            s.deps.Hub,