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LNG_SPECIALIZATION_CLOSED=twin (default): a specialization bridge does not open a carrier loop (deltasignal specs/068) - #118
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… twin, a specialization in-edge does not open a carrier loop The bridge joins two copies of one species, as closed_twin's root-copy supply does. In Release 97 it reopens exactly one loop: PLC-gamma's release of the generic PDGF receptor (R-HSA-186811, 10 free forms), which let PLCG1 set the receptor's level (18 held-out cases broken in specs/067). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…is the default Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
adamjohnwright
marked this pull request as ready for review
October 17, 2026 16:43
adamjohnwright
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deltasignal specs/068.
LNG_SPECIALIZATION_CLOSED(twindefault |off): undertwinthe carrier-loop closedness test infind_poolsignoresspecializationin-edges. A specialization bridge (specs/067) joins two copies of one species, asclosed_twin's root-copy supply does, so it should not open a loop. The edges stay inlogic_network.csv; onlycarrier_loops.csvchanges.In Release 97 this affects exactly one loop: PLC-gamma's release of the generic PDGF receptor (R-HSA-186811, 10 free forms), which specs/067 opened, letting PLCG1 set the receptor's level.
Measured (arm
sctwin, build20261017-0916_b251d86_sctwin, vs canonicalresults/fa2c451): curator held-out +18 (18 fixed / 0 broken, p 7.6e-6, all PLCG1), tuning 0, experimental 0; logic networks unchanged; every pre-registered prediction held.Adopted as the default (Adam, 2026-10-17):
twin;offrestores the specs/067 behaviour.Tests: 4 new (
tests/test_pools.py: default/off/twin closedness, mode validation, flag registration and fingerprint). Non-DB suite 436 passed;ruff check src/ bin/clean.🤖 Generated with Claude Code