Expand description
Cocoon → Mountain webview.setTitle / webview.setIconPath /
webview.setHtml notifications. Shared atom because the three wire
methods map to the same suffix-split pattern; keeping them in one
file avoids three near-identical 5-line files while still pinning
the handler to a discoverable filename.
For per-extension isolation and payload inspection, split this into
three atoms (WebviewSetTitle, WebviewSetIconPath, WebviewSetHtml)
when the divergence is worth it - the dispatcher would add two more
single-line arms.