/** Service worker — ouvre le panneau latéral (Chrome Side Panel ou Firefox sidebar) au clic sur l'icône. */
const extApi = (typeof browser !== 'undefined' && browser.sidebarAction) ? browser : chrome

if (extApi.sidePanel?.setPanelBehavior) {
  // Chrome MV3 : Side Panel API
  extApi.sidePanel.setPanelBehavior({ openPanelOnActionClick: true }).catch(() => {})
} else if (extApi.sidebarAction?.open) {
  // Firefox MV3 : sidebarAction
  extApi.action?.onClicked?.addListener?.(() => {
    extApi.sidebarAction.open().catch(() => {})
  })
}

extApi.runtime?.onInstalled?.addListener?.(() => {
  if (extApi.sidePanel?.setPanelBehavior) {
    extApi.sidePanel.setPanelBehavior({ openPanelOnActionClick: true }).catch(() => {})
  }
})
extApi.runtime?.onStartup?.addListener?.(() => {
  if (extApi.sidePanel?.setPanelBehavior) {
    extApi.sidePanel.setPanelBehavior({ openPanelOnActionClick: true }).catch(() => {})
  }
})