6204db8bb1
Aligns the replay overlay's headline with the splash boot-screen idiom
landed in cacb19c — the cursor block (`▌`, U+258C) prefixed to a
lowercased label reads as a Terminal output line rather than a
generic UI title. "Replay" → "▌ replay" and "Replay complete" →
"▌ replay complete" in both the spawn-time path and the per-frame
update_banner_label updater. Doc comments that quote the literal
strings updated in lockstep so the next reader doesn't grep for an
absent literal.
Tests adjusted to match (banner_text assertions in
overlay_spawns_when_playback_starts and overlay_text_changes_on_completed).
The existing 1178 unit tests still pass; clippy clean.
Move-log scroll, MOVE chip, and WIN MOVE callout from the same mockup
remain open — separate commits.