In v0.5 the "Remove the install media" reminder was a single line
inside the green success box, and operators on both onyx and the
friend's RTX 4080 rig missed it — rebooted into the live ISO and
re-ran the installer thinking the install had silently failed.
Promote the reminder to its own loud yellow thick-bordered gum-style
box stacked directly below the success/countdown box, with three
lines of explanation. Renders for the full 10s of the countdown so
it stays in the operator's face the entire window.
v0.5 used `sleep 5` after a static "System will reboot in 5 seconds."
box, which left the operator guessing how much time was left to grab
the USB stick. The new loop runs 10 → 1, clearing + redrawing the
gum-style success box each tick with the remaining-seconds figure,
giving the operator a visible window to act.
10 seconds (vs 5) because real hardware operators were missing the
window — laptops with the USB on the far side of the dock take
4-5 seconds to physically reach. 10 is comfortable, not annoying.
A typo in the LUKS passphrase is unrecoverable — the disk is
unmountable without it and we don't escrow the key. Re-prompting
until the two reads match catches keyboard-layout surprises (the
US/UK quote-key position is the most common one) before they brick
the install.
Admin password gets the same treatment for consistency. Less
catastrophic (resettable from a recovery shell) but a mismatch
still locks the user out of their fresh install on first boot.
Loop bails on cancel/ESC and re-prompts on validate_pw failure.
Read banner.txt line by line with a 40ms sleep between each, then
clear and redraw the bordered gum-style version. 5-line banner ×
40ms = 200ms total reveal — slow enough to land an aesthetic on the
first frame, fast enough that the operator never feels it as lag.
Pure cosmetic; no functional change to the install flow.
`gum input --password` corrupts the linux fbcon since v0.5.27 — the
bubbletea screen-restore writes back the previous menu buffer because
the framebuffer terminfo entry lacks `civis/cnorm` cursor-hide
sequences, leaving a duplicate "Install" plus a stray "T" rendered on
top of the password field. The fix is a single termios echo-off via
`read -srp`: no redraw, no glitch, no dependency on gum's TUI layer
for the one screen where it broke.
Header still rendered through `gum style` so visual parity with the
disk picker / confirm box is preserved. Whiptail fallback path
unchanged (passwordbox there has always rendered cleanly).
