* feat(stacks): state-aware sidebar context menu and Open App action
- Context menu now adapts to stack state: running stacks show
Stop/Restart/Update, stopped stacks show Deploy only
- Added "Open App" shortcut to open a stack's web UI directly
from the sidebar (visible when running with a published port)
- Backend bulk status endpoint enriched with mainPort detection
- Reduced manual image update check cooldown from 10 to 2 minutes
- Rate limit error message now derives from the configured constant
* fix(stacks): use const for bulkPorts (prefer-const lint)
Anso
