graph had resolvers for 10 of 15 platform chains. This adds the three
missing ones:
- resolvers/utxo/: X-Chain (XVM) — UTXO, Asset, AssetCreateTx, UTXOBalance
- resolvers/zk/: Z-Chain (ZKVM) — ZKProof, Verifier, CircuitHash, ProofBatch, ZKSession
- resolvers/mpc/: M-Chain (MPC) — SigningSession, KeygenSession, SignerSet, Presignature, SignRequest
Registered in engine.go under "utxo", "zk"/"zchain", "mpc"/"mchain"
selectors and added to the "all" batch. Removed the duplicate
"zchain" alias from "privacy" (privacy is a cross-chain protocol, not
Z-Chain — Z-Chain is ZK proofs, now correctly wired to zk.Register).
Now graph supports the same 15 platform chains as indexer:
P, X, C, A, B, D, G, I, K, M, O, Q, R, T, Z.