nx_market_ladder_gate.nx

nx_market_ladder_gate.nx -- THE GATE FOR THE MARKET-ENTRY VERDICT (nx_market_ladder_lib + the CLI), 2026-08-24. SUBJECT: the lib in-process AND the nx_market_ladder ELF forked for real (its exit code is the contract). FIXTURES ARE ASSEMBLED AT RUNTIME in /tmp/nx_market_ladder_gate/: a matrix with two watch rows pointing at a fixture organ, a plan with two rungs and five ladder levels, and the organ declaring ONE of the two symbols. Expected: Open (no requirement) NO-REQUIREMENT; Half (R1,R2) GROW-FIRST binding R2; None (R2) HOLD; Wrong (authored ENTER, requires R2) DISAGREE; Ghost (R9, no such rung) UNRESOLVED -- never a silent ENTER. THE BITE: append the second symbol to the fixture organ and the HOLD level must flip to ENTER (the verdict tracks the SOURCE through the one symbol ruler, not a cached claim). THE NEG-CONTROL for the exit contract: a plan whose authored words all agree exits 0; the plan with a wrong word exits 1. license_tier: ORIGINAL No hw writes (Rule 26). expect_exit: 0