nx_agreebound.nx

nx_agreebound.nx -- WRITING arc, rung W-AGB-1: THE PANEL-RELIABILITY BOUND. Closes gap-queue rows #1 and #2 of nx_writebench in ONE rung, because they are two facets of a single missing thing -- a mechanical answer to "is this verdict reliable enough to ACT on?": #1 multi-detector-disagreement-bound -- ruler: detectors disagree 3.9x on violence, 3.1x on insult, 1.45x on sexual, ON THE SAME CORPUS. A one-detector rule is therefore a coin flip, and any single detector's rate is an INTERVAL, never a point. #2 judge-reliability-alpha-floor -- ruler Table 1: LLM-vs-human Krippendorff alpha collapses to 0.24 (violence) / 0.43 (insult) ON MODEL OUTPUT, well under the 0.6 substantial floor. ★★THE LAW THIS MECHANIZES: a panel that cannot agree cannot license enforcement. The estate has been bitten repeatedly by a single confident judge (the editjudge that blessed its own mask, DEC026; the compliance metric that ROSE while the picture got worse). This organ refuses to let ONE score authorize an action -- structurally, at ndet<2, no matter how good that score looks. ★WHAT IT IS NOT: this is a RELIABILITY meter, not a content filter, and it never scores content itself. It takes ratings other organs produced and answers how much they can be trusted. It has no opinion about what a consenting adult asks for -- consistent with [[nx_dialogue]], the only lines are legal ones, enforced upstream by rg_decision's age/consent/locale gate. A low-reliability panel downgrades to REPORT-ONLY; it never escalates into a refusal it could not justify. ★THRESHOLDS ARE PARAMETERS (rule 11): every floor/cap is an argument, with the ruler-derived defaults below named and cited. A caller tightening a bound edits DATA, never this organ. Krippendorff nominal alpha, EXACT INTEGER (no float anywhere), for an equal-raters-per-unit panel: D_pairs = sum over units of (n_u^2 - sum_c n_uc^2) (ordered disagreeing pairs) E_pairs = n^2 - sum_c n_c^2 (expected, from the marginals) alpha = 1 - [D_pairs/(m-1)] * [(n-1)/E_pairs] => alpha_permil = 1000 - (1000 * D_pairs * (n-1)) / ((m-1) * E_pairs) Signed: alpha BELOW zero means worse than chance, and is reported as such, never clamped to 0. Pure integer, NO syscalls, caller owns every buffer -- same contract as nx_dialogue/nx_register. license_tier: ORIGINAL module: nishi-core.write.agreebound depends: (none -- pure) capability: WRITE_PANEL_RELIABILITY