Plutus V3 spend with continuing-output state transition. Validator runs
Deposit { contributor } redeemer.
v1 limitation: ADA-only deposits. Multi-asset deposits are deferred —
Aiken's flat_merge uses right-fold which produces REVERSED appended-
policy ordering vs naive forward iteration. Single-entry net_added
(lovelace-only) trivially collapses any ordering ambiguity, so Rust's
existing value_merge matches Aiken's flat_merge byte-for-byte for v1.
Mirrors all six validator checks client-side as preflight (state==Open,
contributor in {a,b}, signed_by, continuing-output exists, datum equal
except deposits, deposits canonicality). 9 unit tests cover both
negative paths and happy-path datum mutations (new entry append,
existing entry merge, immutable fields preserved).
Inlines V3 validator CBOR in the tx witness for v1; reference-script
optimization is a v2 follow-up. Sets V3 cost model via language_view
to satisfy script_data_hash.
Kayos
93798a20d4