Add deployment improvements and UI enhancements

- Clone specific commit SHA from webhook instead of just branch HEAD
- Log webhook payload in deployment logs
- Add build/deploy timing to ntfy and Slack notifications
- Implement container rollback on deploy failure
- Remove old container only after successful deployment
- Show relative times in deployment history (hover for full date)
- Update port mappings UI with labeled text inputs
- Add footer with version info, license, and repo link
- Format deploy key comment as upaas_DATE_appname

internal/handlers/dashboard.go

@@ -20,9 +20,9 @@ func (h *Handlers) HandleDashboard() http.HandlerFunc {
 			return
 		}
 
-		data := map[string]any{
+		data := h.addGlobals(map[string]any{
 			"Apps": apps,
-		}
+		})
 
 		execErr := tmpl.ExecuteTemplate(writer, "dashboard.html", data)
 		if execErr != nil {