chore(protos): sync to buf.build/lumera-protocol/lumera:v1.20.0

[mateeullahmalik]

What

Bumps BSR pin in package.json from v1.12.0 (e1840803ddd3435cb1a68af6ade4b2ed, 2026-05-14) to the labeled v1.20.0 commit (64adc7466c884d0d995a8c7296824bb9) and regenerates the TypeScript codegen via npm run generate.

BSR label confirmed by Alexy and re-verified via buf.registry.module.v1.LabelService/ListLabels.

Why

sdk-js was pinned at v1.12.0 while chain has moved to v1.20.0. The v1.20.0 release adds two new modules (x/erc20policy, x/evmigration) plus small updates to x/audit. JS consumers cannot construct migration/erc20policy messages or call the new query endpoints until codegen catches up.

Changes

New module surface

• lumera.erc20policy — tx.proto (ERC20 policy Msg surface)
  • New tree: src/codegen/lumera/erc20policy/**
• lumera.evmigration — genesis, migration_record, module, params, proof, query, tx
  • New tree: src/codegen/lumera/evmigration/**

Updates

• lumera.audit.v1: audit.proto (+9 lines), genesis.proto field tweak
• Stdlib refresh from telescope (cosmos / tendermint bundles)

Wiring is automatic via telescope — verified manually:

• src/codegen/lumera/bundle.ts exports the erc20policy and evmigration namespaces
• src/codegen/lumera/client.ts registers tx registry + amino converters for both
• src/codegen/lumera/rpc.query.ts exposes the evmigration query extension
• src/codegen/lumera/rpc.tx.ts exposes erc20policy + evmigration msg clients

Verification

• npm run generate — clean (✨ Post-codegen fixes completed successfully!)
• npm run build — tsc ESM + CJS clean
• npm test — 81 / 81 vitest pass
• BSR label v1.20.0 resolved on registry, commit id matches Alexy's message

Proto diff (chain repo, v1.12.0 → v1.20.0)

proto/lumera/audit/v1/audit.proto               |   9 +
proto/lumera/audit/v1/genesis.proto             |   2 +-
proto/lumera/erc20policy/tx.proto               |  68 +++++++
proto/lumera/evmigration/genesis.proto          |  27 +++
proto/lumera/evmigration/migration_record.proto |  22 +++
proto/lumera/evmigration/module/module.proto    |  15 ++
proto/lumera/evmigration/params.proto           |  49 +++++
proto/lumera/evmigration/proof.proto            |  33 ++++
proto/lumera/evmigration/query.proto            | 242 ++++++++++++++++++++++++
proto/lumera/evmigration/tx.proto               |  72 +++++++
10 files changed, 538 insertions(+), 1 deletion(-)

Risk / rollback

• Risk: low. Generated code + one script-string + version bump. No hand-written source paths touched.
• Rollback: revert the commit.

Version

Bumps 0.3.0 → 0.4.0 — new proto module surface (erc20policy, evmigration) is a new public TS API even though we're pre-1.0.

Follow-ups (not in this PR)

• proto:download:deps still pins a stale cosmos-sdk BSR commit (5a6ab7bc14314acaa912d5e53aef1c2f, ~Cosmos SDK v0.50). Chain is now on v0.53.6. Worth a separate PR to bump so we don't silently resolve v0.50-era Cosmos types when the chain proto references newer SDK primitives.
• Hand-written first-class helpers for evmigration / erc20policy (currently reachable only through the generated tree). Track as its own task.