- Remove a stray build artifact (examples/starfall/starfall.gba + .build.log —
  a playtest output with no source) that the files:['examples'] glob would have
  published, and add an .npmignore excluding ROM binaries + build logs from the
  examples tree so it can't recur. Source-form .p8 carts + input assets still ship.
- CHANGELOG: note the stepInstructions all-18-platform scope + the m68k width-cap
  fix, and the .npmignore.