forked from opencode.energia.arti.ee/vt1200
- seed the game from the raw 0x1E93C0 counter (now_ms() returns 0 on its
first call, so the old seed was always zero)
- track pause ourselves: FocusOut pauses once, FocusIn resumes only what we
paused (game_input('p') is a toggle)
- select ExposureMask so the Expose redraw path actually fires
- play.sh/play_keys.sh rebuild the COFF (OUTNAME=termtris) and assert the
run: status=0, tick>0, loops/events/quit per mode; render.sh asserts the
renderer finished; map symbol lookup is column-order independent
- run.sh passes -lightgun -lightgun_device mouse so the pointer drives the
tablet
- docs: link map addresses, monochrome/reverse wording, honest caption and
limits text
Verified here: play.sh and input.sh pass. Still open: the MAME driver in the
tree is newer than the installed binary (Oct 30 build, VR150-era geometry),
so the acceptance suite must be re-run after a rebuild.