Adrian (2026-11-02): double the furnace speed; there must be a way in
game to see how a machine is built; a test world with the machines.
- Large Furnace speed doubled (2 + 0.08 x level + 0.02 x SpA).
- Ghost preview: placing a core, using it with an incomplete shell, or
sneak-using it empty shows every wrong spot as a small glowing block
display for 10 s (never saved), in the core's orientation, with a
chat line counting what's missing.
- Core tooltips: what the machine does, what its shell is made of.
- /cobblesurvival machines showcase builds every machine three times
(working with a Showcase-owned Pokemon, empty, bare core) with signs,
hoppers, chests and cables; tools/make_machine_world.py makes a
superflat creative world from it (level.dat via tools/nbtfile.py)
and --prism installs it as "Machine Test (Phase 6)".
- Self-tests machine_preview_shows_the_shell and
machine_showcase_builds_every_machine; docs and checklist.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
