nx_manga_bubble_gate.nx

nx_manga_bubble_gate.nx -- REFEREE for R2 (nx_manga_bubble). END-TO-END: forks the PROMOTED elf with a real argv and reads the PNG it produced back through our own decoder, so it measures the shipped binary and not a convenient in-process copy of the logic. It proves the DONE-RULE that was pre-declared on /compare/mangagen before the organ existed: "Bubble geometry + tails + sovereign TTF raster; overflow REFUSES, never silently clips." TWO NEGATIVE CONTROLS, because a green that never had a red is unverified: neg-control-white -- the same ink counter over a known-blank buffer must return ZERO, so the drew-something teeth cannot be tautologies that pass on any image. neg-control-overflow -- text that cannot fit must REFUSE (non-zero) AND leave NO output file, which is the difference between refusing and clipping. license_tier: ORIGINAL expect_exit: 0