Function synced_progress 

pub fn synced_progress(
    spinner: &str,
    active_names: &str,
    done: usize,
    total: usize,
    added: usize,
    updated: usize,
    stale: usize,
) -> String

In-progress sync line for the footer. Format: ⠋ Syncing AWS, Hetzner · 1/3 (+12 ~3 -1). Active provider names lead so the user immediately sees which provider is currently in flight (especially relevant when one provider is slow). done/total follows as a counter. The leading character is a braille spinner frame rotated on every tick. The (+a ~u -s) suffix is omitted when all counts are zero.

Callers MUST only invoke this when active_names is non-empty (i.e. at least one provider is still in flight). The only call site is main::set_sync_summary, which enters this branch via still_syncing, itself gated on !providers.syncing.is_empty() — so active_names (built from syncing.keys()) is guaranteed non-empty.