KytyPlus v3.9

Highlights

• Sonic Superstars (PPSA06888) is now Playable — the game previously hung at
  "Downloading data. Please wait." in Jungle Act 1. Fixed by correcting PlayGo
  PlayGoGetChunkId two-pass enumeration (count query then fill) and adding a
  compatibility fallback that enumerates 1000 chunks when install metadata is
  absent. Sustained Jungle gameplay was observed; full-campaign completion and
  all bosses are not yet verified.

• Default upscaling: 1080p native → 4K FSR — fresh installs and new CLI
  launches now default to a 1920×1080 engine request upscaled to 3840×2160 via
  Fsr1 (Performance preset, sharpness 0.3, FIFO). No manual setup required.
  This is the project's FSR-inspired spatial EASU/RCAS upscaler, not temporal
  FSR 2/3 or frame generation. Engines may ignore the resolution request;
  actual source/output dimensions are logged at runtime.

  Opt out at any time:

  kyty_emulator --game "..." --upscaler-method Off
  kyty_emulator --game "..." --fsr-output-width 0 --fsr-output-height 0
  

  Previously saved launcher choices (including Off) are preserved.

Changes

Compatibility

• Sonic Superstars PPSA06888: Ingame (playable-ish) → Playable (docs)
• PlayGo: fix PlayGoGetChunkId returning 0 on the count-query pass
• Add libScePlayGoDialog and libSceNpCommerce HLE stubs for import resolution
• Compatibility table refresh for multiple titles (from #12, #13)

Tests

• PlayGoApiTests — regression coverage for two-pass enumeration, fallback
  bounds, caching, and locus/progress/ETA via the real SymbolDatabase
• LauncherConfigurationTests — FSR default + user-override persistence

Notes & limitations

• "Playable" reflects sustained early-game confirmation, not a full playthrough.
• The PlayGo chunk fallback assumes a complete local dump; it does not download
  or synthesize missing files.