Method Update

internal/tui/tui.go:81–125

--- Update ---

(msg tea.Msg)

	// the stream open. It outlives the view context, which a mail account switch throws
	// away — the changes stream is the same one whichever account is being read.
	watchMail         MailWatcher
	mailWatchEvents   <-chan MailWatchEvent
	mailWatchAttempt  uint64
	mailWatchFailures int
	mailWatchStatus   mailWatchStatus
	mailWatchReason   string
	watchCtx          context.Context
	stopWatching      context.CancelFunc

	// The Screener's stream, which can only be opened once HEY has served its name, and
	// the context that holds it open. Cancelling that context is how the stream behind an
	// old name is given up, so a new one does not stack on top of it.
	watchScreener      ScreenerWatcher
	screenerChanges    <-chan struct{}
	screenerStream     string
	stopScreenerWatch  context.CancelFunc
	screenerRefreshDue bool

	// The calendar's streams, followed only while the calendar or the journal is on
	// screen: every other section re-reads its data on entry, so a doorbell rung for a
	// section nobody is looking at would be paid for and answered by nothing.
	watchCalendar         CalendarWatcher
	calendarChanges       <-chan struct{}
	calendarWatchAttempt  uint64
	calendarWatchFailures int
	stopCalendarWatch     context.CancelFunc
	calendarRefreshDue    bool

	// Linked mail accounts
	mailAccounts            []mailAccountChoice
	mailAccountsLoaded      bool
	mailSourcesLoaded       bool
	mailAccount             mailAccountChoice
	mailAccountCursor       int
	mailAccountPicker       bool
	mailAccountSwitching    bool
	mailAccountUnavailable  bool
	mailAccountDiscoveryErr string
	mailAccountErr          string
	mailAccountRequestID    uint64
	viewGeneration          uint64
	viewGenerationToken     *atomic.Uint64

	// What just happened, in the top right corner until its clock runs out
	toast   notifyMsg
	toastID uint64

	// Loading & error