Interactive installer: prompt before replacing an existing install or
overwriting an existing config, reading answers from /dev/tty so it works
under 'curl ... | sh'. Falls back to the prior non-interactive contract
when no terminal is available. MOVE_FORCE=1 skips all prompts; new
MOVE_RESEED_CONFIG=1 reseeds the config unattended (old file kept as .bak).
Fix: install.sh no longer wipes a working install before downloading. The
tree is built in a staging dir and swapped into place only once complete,
so a failed download/extract/build leaves the existing install intact.
nokeo08
b9669269bc