feat(deploy): async compose-up for instant UI feedback (v0.28.2)

Deploy API now returns immediately after validation + config save.
docker compose up -d runs in a background goroutine so the UI shows
progress during image pulls instead of blocking for 30-60s.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

controller/internal/web/funcmap.go

@@ -38,7 +38,7 @@ func (s *Server) templateFuncMap() template.FuncMap {
 			switch state {
 			case stacks.StateRunning:
 				return "green"
-			case stacks.StateStarting:
+			case stacks.StateStarting, stacks.StateDeploying:
 				return "orange"
 			case stacks.StateUnhealthy:
 				return "yellow"
@@ -56,6 +56,8 @@ func (s *Server) templateFuncMap() template.FuncMap {
 				return "Fut"
 			case stacks.StateStarting:
 				return "Indulás..."
+			case stacks.StateDeploying:
+				return "Telepítés..."
 			case stacks.StateUnhealthy:
 				return "Nem egészséges"
 			case stacks.StateStopped, stacks.StateExited:
@@ -74,7 +76,7 @@ func (s *Server) templateFuncMap() template.FuncMap {
 			switch state {
 			case stacks.StateRunning:
 				return "●"
-			case stacks.StateStarting:
+			case stacks.StateStarting, stacks.StateDeploying:
 				return "◐"
 			case stacks.StateUnhealthy:
 				return "◑"