Panels

Panels, popovers, and the sidebar are web pages around the workspace. They all get the same page API, data, and theme as tabs.

Panels

A panel docks to the right or bottom of the workspace, or floats over it.

"panels": [
  {
    "id": "notes",
    "title": "Notes",
    "icon": "note.text",
    "entry": "notes/index.html",
    "position": "right",
    "mode": "floating"
  }
]

Field	Notes
`id`, `entry`	Required.
`title`, `icon`	Shown in the panel header.
`position`	`right` (default) or `bottom`.
`mode`	`floating` (default) or `pinned`. Users can switch, and their choice is kept.
`hiddenControls`	Hide header controls: `icon`, `title`, `close`, `pin`, `position`.
`headerButtons`	Extra header buttons, shaped like bar items.
`hideTopbar`	Hide the whole header.
`defaultData`	Data used when opened without any.

Open one with a togglePanel or openPanel command, or from a page with muxy.panels.open(id, data), toggle(id, data), or close(id). close() with no ID closes the calling panel. Needs panels:write.
Each project remembers its open panel: switching projects closes it, and switching back reopens it.
A floating panel closes when you click elsewhere.

Popovers

A popover opens under a top bar or status bar item, and closes when you click outside it.

"popovers": [{ "id": "status", "entry": "status/index.html", "width": 320, "height": 360 }],
"commands": [{ "id": "show-status", "title": "Status", "action": { "kind": "openPopover", "popover": "status" } }],
"statusBarItems": [{ "id": "status", "icon": "bolt", "side": "right", "command": "show-status" }]

Popovers open only from bar items whose command uses openPopover. Needs panels:write.
width and height default to 320 × 360. muxy.popover.resize(w, h) changes them within 80–600 × 80–720.
muxy.popover.close() closes it.

Sidebar

An extension can provide one full-height page that replaces the built-in sidebar.

"sidebar": { "id": "main", "title": "My Sidebar", "icon": "sidebar.left", "entry": "sidebar/index.html" }

Users turn it on in Settings → Appearance → Active sidebar. It can't close itself.