Keep opaque island widgets live when slhx swaps or later DOM insertion adds a new island, and tear down the listener when an island leaves the document.
req: interop/001
req: examples/001
Add a canvas leaf-widget island to the techdemo that receives server snapshots through Effect::event/CustomEvent while keeping slhx core and runtime semantics unchanged.
req: interop/001
req: examples/001
req: examples/005
slhx agent