core/docs/analysis/router-organ-hygiene-invariant-2026-06-08.md

Router-organ hygiene — standing invariant

Rule: No organ may block another organ's legitimate proposal unless it has first positively recognized the input as belonging to its own family.

Operationally, in the multi-organ contemplation router (route_setup → contemplation pass):

On any other organ's text, when an organ refuses, the refusal reason must map to the non-substantive input_shape family ("not my domain") — never a substantive boundary and never a growth surface.

Why this exists

The contemplation pass classifies an all_refused problem boundary-first: a substantive must_remain_refused family (anything but input_shape) blocks any proposal. That is correct within an organ's domain — but if an organ emits a substantive boundary on text that is not its domain, it silently suppresses another organ's legitimate proposal.

This exact hazard has now appeared three times:

Where	Organ	Over-broad refusal	Fix
N6	R2	category_pair_not_found on any non-R2 text	→ input_shape; missing_category_pair reserved
R3e	R3	temporal_state (clock detector) on non-rate text	kept a boundary, not a growth surface
R3.1	R3	missing_rate on non-rate R2 text (blocked an R2 proposal)	claim only with a duration present; else not_rate_shaped → input_shape

The gate

tests/test_router_organ_hygiene.py enforces it for every organ × every other organ's gold. It is MUST-PASS before any new organ joins route_setup: add the new organ's gold to _GOLD and its classifier to _ORGANS, and the rule is enforced for free.

In plain terms — an organ's refusals on foreign text must say "not my problem", never "this is a broken problem of my kind." Only a refusal that follows positive recognition of the organ's own structure (e.g. R3's missing_time requires a rate clause; rate_unit_mismatch requires a rate clause + a duration) may be a substantive boundary.