What it is
Void + still K₄ + one sentence, then four doors (understand · use · build · know someone). Threshold — four doors, no funnel is a core component of the P31 Labs sovereign cognitive infrastructure stack — built to run offline, deployed to the edge, and designed without dark patterns.
Replaced multi-phase Wye UI (Apr 2026) with threshold design; `p31-welcome-packages.json` still used by `mesh-start.html`. Passkey Worker unchanged. Egg-hunt archetype substrings kept as hidden anchors.
Core features
Void + still K₄ + one sentence, then four doors (understand · use · build · know someone)
Door 1 walks origin → products → evidence → help without accounts; numbers link to verifiable sources
Door 2 self-identifies role then deep-links Passport, BONDING, doc library; `?welcome=kid` / `?a=child` opens the parent path
Door 3 is the developer spine (clone, verify, AGENTS.md); Door 4 routes room codes to bonding and invite URLs to mesh-start when same-origin