feat: SCOPE_POLICY initiation mode and nonceLane#28
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Align AccountConfiguration with the EIP-8130 draft: gated initiation is SCOPE_POLICY, policy slots are written from that bit, scope combos are stored verbatim for protocol use-time checks, and nonceLane carries the unbound / lane-or-nonceless / nonceless-only restriction.
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Summary
policyTypewithSCOPE_POLICY(0x10) as the gated-initiation grant; policy slots are written iff that bit is setnonceLane(uint16):0unbound,1..0xFFFElane-or-nonceless,0xFFFFnonceless-only (stored verbatim; protocol enforces)POLICY | PAYERallowed;POLICYvsSENDER/SIGNER/CONFIGis use-time)authenticateActor→(scope, nonceLane, policyTarget),getPolicy→(target, commitment), examples/tests, and 4337 bridge (SENDER/PAYER grants only)Matches the EIP draft: chunter-cb/EIPs#9
Test plan
forge testforge fmt --checkActorAuthorizedpacking,chainIddigests already aligned in EIP)