ZX SPECTRUM +3 DSK VALIDATION — PASS

See summary.json for final results.

Boulder Dash: frozen R07 TAP payloads; all eight unique CODE payloads match
entry RAM exactly. Native 256x192 selector is pixel-identical to the 128K
TAP reference (49,152/49,152 pixels). Gameplay smoke and 500 IRQs pass.

Space 1999: final TAP payloads; all eight CODE payloads match entry RAM
exactly. Intro, startup menu, and gameplay have native screenshots and
IRQ progress. Storage backend remains TAP (storage_media=0).

Both disks cold boot via +3 Loader + Enter, ordinary +3DOS filesystem
operations, motor off, 1FFD=4 (ROM 3), no memory injection/snapshot boot.

The loader disables the DOS sector cache before banks 1/3/4/6 are loaded.
Bank 7 and the main binary are staged with lossless ZX0, then restored only
after the last DOS call. No gameplay/rendering code was rebuilt or edited.

Source tools: tools/plus3_media.py, tools/plus3_verify.py.
Intermediate boot/boot-cache0 reports predate the final build; final reports
are identified in summary.json. Raw RGB565 captures were released after
PNG extraction; FMF and native PNG evidence remain.

Limits: Fuse emulator smoke tests, not physical +3 hardware or full campaign.
