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r4bbit
62dc45177d
A permissionless keeper op that refreshes a pool's stored reserves to the live
vault balances (and its TWAP tick). Same lean pattern as the other plans, but
minimal: SyncReserves is a unit instruction — no quote, no user inputs (no
amounts/slippage/deadline/holdings), and nothing signs.
FFI (modules/amm/ffi):
- sync_reserves_plan: encodes SyncReserves over the fixed 6-account IDL order
(config, pool, vault_a, vault_b, current_tick, clock), all non-signing.
config/pool/current_tick/clock are order-independent PDAs from derive_pair;
the vaults come from the pool's stored ids in pool_data (read-only, but the
guest still asserts them — a non-canonically-stored pool would otherwise
mismatch). Fails closed: same_token_pair, config_unavailable, no_pool.
- Wired through mod.rs / ffi.rs (cbindgen header regenerated). Tests cover the
stored-vault + zero-signer + unit-instruction layout and the fail-closed
paths. amm_ffi: 43 tests pass, clippy clean. (lib.rs is a cargo fmt re-wrap.)
C++ module (modules/amm/src):
- syncReserves reads config + pool server-side, calls the plan, and submits.
request is just { tokenAId, tokenBId } — no holdings/amounts/deadline. Public
method → auto-exposed via the universal-module dispatch.