Add Chain 138 (Defi Oracle Meta Mainnet)

[defiQUG]

What changed

This PR adds basic Wallet Core support for Defi Oracle Meta Mainnet (chainId 138, id: dfiometa) as an EVM-compatible chain.

Included changes:

• add the Chain 138 registry entry to registry.json
• add TWCoinTypeDefiOracleMetaMainnet
• extend address-derivation coverage for the new EVM chain
• add a chain-specific TWCoinType configuration test

Chain details

• Chain name: Defi Oracle Meta Mainnet
• Chain ID: 138
• Registry ID: dfiometa
• Native currency: ETH
• Explorer: https://explorer.d-bis.org
• Public RPC: https://rpc-http-pub.d-bis.org

Why

Chain 138 is an EVM-compatible network and should be handled as a standard Ethereum-family chain in Wallet Core so users can derive addresses and resolve chain metadata without manual workarounds.

Scope note

This PR is for chain support only.

It does not add ERC-20 asset metadata such as:

• WETH9
• GRU v2 tokens
• token logos / token-list entries

Those belong to separate token-asset / assets-app submission flows rather than the Wallet Core chain-registry change itself.

Validation

• jq empty registry.json
• cd rust && cargo test -p tw_tests --test coin_address_derivation_test

References

• Explorer: https://explorer.d-bis.org
• Website: https://d-bis.org
• Chainlist entry: https://chainlist.org/chain/138

[defiQUG]

Cross-link: support question in #4744 (“do derivation addresses need exchanging?”) — answered there: no. Chain 138 uses standard EVM derivation (m/44'/60'/0'/0/0); same 0x address as Ethereum for the same mnemonic. This PR only adds chain metadata + tests; no user wallet migration.

Rebased onto current master (conflicts with SeiEVM/HypeEVM enum slots resolved); branch is mergeable.

[defiQUG]

Assets PR opened for canonical Chain 138 tokens (16) + chain info: trustwallet/assets#36922 — pairs with this wallet-core change (dfiometa / coin_type 10000138).

[defiQUG]

Merge request — assets PRs blocked on this

Chain 138 assets submissions are waiting on wallet-core registration (dfiometa, coin type 10000138). Trust assets bot reports No token files found on dfiometa PRs until this merges:

• Add dfiometa Chain 138 assets batch 1/2 (chain + 9 tokens) assets#36947 (batch 1 — chain + 9 tokens, 500 TWT paid)
• Add dfiometa Chain 138 assets batch 2/2 (7 tokens) assets#36948 (batch 2 — 7 tokens)
• Add cWUSDC on Ethereum, BSC, and Polygon assets#36949 (cWUSDC — ETH/BSC/Polygon)

Branch is rebased on master (ahead by 3, behind 0). Standard EVM derivation only — no custom address scheme.

Kindly review and merge when ready. Thank you.

[defiQUG]

Refresh: rebased onto latest master (2026-06-10) — resolved TWCoinType / derivation test conflicts with SeiEVM + HyperEVM upstream additions.

[mdmamun198710]

What is erc20 wallet I am added in this coin