F8C: Authoritative Settlement and Direct Beneficiary Delivery

[garykocsis]

Summary

Completes F8C — Authoritative Settlement / Direct Beneficiary Delivery.

F8C extends the F8B-proven protected execution path with authoritative R4 settlement and delivery while preserving F8D as the sole owner of fulfillment finalization and Remaining Entitlement reduction.

What Changed

• derives actual input debt from the authoritative PoolManager execution result;
• enforces the originating exerciser's maxInput against that actual debt;
• settles exactly the resulting input debt directly from the authenticated exerciser to PoolManager;
• delivers exactly the protected output quantity directly from PoolManager to the authoritative Beneficiary;
• explicitly verifies closure of the relevant input and output PoolManager deltas;
• preserves the Hook causal context at EXECUTED;
• leaves Original Entitlement, Remaining Entitlement, obligation consequences, and fulfillment state unchanged;
• keeps the production exercise path fail-closed until F8D performs authoritative finalization and consumes the causal context.

Verification

G8C was independently reviewed against the complete implementation diff and is PASS / CLOSED.

Verification includes unit, integration, fuzz, and periphery coverage for authoritative debt derivation, signed-delta handling, maxInput boundaries, payer attribution, exact settlement, direct Beneficiary delivery, causal-context requirements, failure atomicity, and the F8C production completion barrier.

Full test suite:

• 502 passed
• 0 failed
• 0 skipped
• CI profile verified at 10,000 fuzz runs

Scope Boundary

F8C does not:

• reduce Remaining Entitlement;
• mutate Original Entitlement;
• release obligation consequences;
• mark fulfillment or commitment completion;
• consume the Hook causal context;
• implement F8D finalization.

The next authorized implementation slice is:

F8D — O2 Causal Finalization / Remaining Entitlement Reduction