Add opt-in [widescreen.cull] xclip_load_sites: a configured `lw rt,off(rs)`
loading a per-primitive X-reject bound (sltu-compared against ANDI-masked
u16 screen X) routes through psx_ws_xclip_bound() - INT32_MAX while the
margins are revealed (reject disabled; the wide-surface scissor clips the
overflow, wrapped off-left u16 coords pass), vanilla value at 4:3. Matched
native codegen emit and interpreter hook; overlay ABI v18 forwarder (NULL
preserves the vanilla loaded value); codegen ver 8. Parser, codegen and
overlay-mismatch regression coverage.
Split from #49: replaces the xclip_globals RAM poke with a recompile-time
instruction transform so native shards and the interpreter behave identically.
Opok
4412bc7a7d