nx_nishios_browser_x86.nx

nx_nishios_browser_x86.nx -- BROWSER-ON-ALL-OS arc, rung N4: the browser's pixels land in the NishiOS framebuffer via EXECUTED x86 STORE INSTRUCTIONS (the draw-as-x86 seam, same move as nx_nishios_fb_x86). N1 proved the browser RENDERS on NishiOS and N2 proved INPUT -- but the window pixels were written by a NishiLang blit loop. This rung closes that seam one level deeper: after the boot gate, the page is laid out + painted by the browser core into an RGB buffer (the PREP), then an AUTHORED REAL-ENCODING x86 program (movabs imm64 / mov r32 load+store / add imm8 / mov rcx,imm32 / dec / jnz / hlt -- a 2-level strided copy loop) is EXECUTED on a sovereign mini-emu, and it is those executed `89 10` (mov [rax],edx) stores that write EVERY byte of the browser window region of the NishiOS framebuffer, row-strided into place. Byte-verified against a NishiLang oracle blit; the executed-store COUNT must equal the window byte count / 4 exactly. KAT: T1 booted off the persisted image; T2 LONG mode + banner; T3 page laid out; T4 the x86 program ran to a clean HLT; T5 executed 32-bit stores == 465*426 exactly (every window word written by x86); T6 window region byte-IDENTICAL to the oracle blit; T7 x86 never scribbled outside the window (chrome pixel intact); T8 BMP exported at the exact expected size. NEG/liar-kill: T9 a corrupted store opcode (0x89 -> 0x88, an encoding this emu does not implement) REFUSES execution and leaves the window unwritten; T10 a 0-sector-load sibling image never reaches long mode -> nothing is drawn at all. HONEST SEAM (stated, not hidden): layout/paint PREP is NishiLang (running the full render core as x86-on-emu = compiling the browser itself to the emu's ISA, a far deeper rung); what this rung proves is that the FRAMEBUFFER WRITES -- the pixels you see in the window -- were performed by real executed x86 stores, strides and all. NishiOS-native fetch (nx_nishios_net) remains the named next rung. NEVER-BRICK (Rule 26): writes FILE artifacts only; models INT 13h *reads*; no /dev. expect_exit: 0 license_tier: ORIGINAL