Application addons

Applications are web UIs opened from the main window in a dedicated sandboxed BrowserWindow (no Node integration, no preload).

Manifest

Field	Value
`type`	`application`
`web`	HTML entry file
`web_type`	`application` (required)
`web_contents`	Additional assets

Launch URL

http://localhost:{WEB_SERVER_PORT}/addon_static/{id}/?token={data.token}

Same static route as widgets. Window id: addon-app:{addonId}.

Static application (no worker)

WEB_CONTENT only — HTML/JS/CSS in the install folder.

Full application (worker)

Worker provides API endpoints for the page. Validate query.token === data.token on private routes (same pattern as widgets).

Typical endpoints:

GET params — settings for the page
GET state — current state
POST … — user actions

Main window UI

When at least one enabled application addon with valid web exists, the main window shows Applications. User picks an item; main process opens or focuses the sandbox window via IPC.

List updates on install/enable/disable/uninstall.

Settings UI

Settings → Applications: AddonsCategoryBlock with type="application" — same install/enable/settings flow as other categories.