v0.3.0

DelugEmu v0.3.0

Live-play latency and folder-backed SD card.

Audio / display:
- deluge-skin now skips recompositing unchanged frames, removing the
  periodic full-panel redraw stall that dominated audio latency when
  playing the emulator live from external MIDI.
- SSIF output buffer is runtime-tunable via run.sh --audio-buffer <ms>
  (device property rza1l-ssif.prime-ms); default lowered to 15 ms now
  that the redraw stall is gone.
- Default to the console (front-panel skin) display; the skin PNG is
  bundled in the release and the ssif.in audio error is silenced.

SD card:
- --sd now accepts a directory, snapshotted into a temporary FAT image
  at launch. Directories whose name ends in '_rw' have guest changes
  written back on clean exit. When --sd is omitted, run.sh defaults to
  ./sdcard_rw or ./sdcard.

MIDI:
- New scripts/midi_route.py CoreMIDI router (bundled in releases) wires
  the emulated Deluge to host gear (e.g. a Synthstrom Summit) in both
  directions.

CI attaches a self-contained, relocatable macOS bundle
(DelugEmu-macos-<arch>.tar.gz) to this release.