Add fail-closed real P formula data contract

Correct shared-state lineage and add composite torch exports

Add 3-seed device-contract stress validation

Add adopted 3-seed P boundary joint deltas and formal research summary

Promote full P proxy boundary head after validation and paired-test gates

Add P-track boundary auxiliary head smoke and shared encoder integration

Publish 0.6 main 3-seed point-stroke model stack and technical model card

Add AIFlow Math Ink 0.6 intermediate research snapshot