feat: add Abstract and Starknet chain support

[r-near]

Summary

• Add Abstract (Abs) as a new EVM chain and Starknet (Strk) as a non-EVM chain
• New @omni-bridge/starknet package with transaction builder and event parsing
• Calldata encoding verified byte-for-byte against Rust bridge-sdk-rs output

Changes

Core (@omni-bridge/core):

• ChainKind.Abs = 9, ChainKind.Strk = 10
• abs: / strk: OmniAddress prefixes
• Abstract added to EvmChainKind, isEvmChain(), EVM_CHAIN_IDS (mainnet: 2741, testnet: 11124)
• Bridge addresses, API schema, token mappings updated for both chains

EVM (@omni-bridge/evm):

• Abstract chain support in proof.ts (RPC URLs, viem chain configs)

Starknet (@omni-bridge/starknet):

• Builder returns starknet.js Call[] directly — pass straight to account.execute()
• buildTransfer (approve + init_transfer multicall), buildFinalization, buildDeployToken, buildLogMetadata
• Uses starknet.js native APIs (byteArray.byteArrayFromString, CairoUint256, CallData.compile)
• Event log extraction and parseInitTransferEvent for receipt parsing
• isTransferFinalised contract query (matches bridge-sdk-rs#254)

Docs & umbrella:

• All READMEs, reference docs, guides updated
• @omni-bridge/sdk re-exports starknet package

Test plan

• 256 unit tests pass (bun run test packages/)
• Encoding tests include ground-truth vectors from Rust SDK
• Build, typecheck, lint all clean

References: Near-One/bridge-sdk-rs#248, Near-One/bridge-sdk-rs#254

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[changeset-bot]

🦋 Changeset detected

Latest commit: 12bbe51

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 7 packages

Name	Type
@omni-bridge/core	Minor
@omni-bridge/evm	Minor
@omni-bridge/starknet	Minor
@omni-bridge/sdk	Minor
@omni-bridge/btc	Minor
@omni-bridge/near	Minor
@omni-bridge/solana	Minor

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[Copilot]

Pull request overview

Adds two new chains to the Omni Bridge SDK surface area: Abstract (EVM) and Starknet (non‑EVM), including a new @omni-bridge/starknet package for Starknet transaction building + receipt/event parsing, plus core config/type/docs updates to recognize abs: / strk: addresses and token prefixes.

Changes:

• Extend @omni-bridge/core with ChainKind.Abs / ChainKind.Strk, new OmniAddress prefixes, updated bridge/token config, and updated API chain schema.
• Add Abstract support to @omni-bridge/evm (chain configs + RPCs) and builder tests.
• Introduce @omni-bridge/starknet with calldata encoding utilities, a Starknet transaction builder, event log extraction/parsing, and encoding test vectors; re-export via @omni-bridge/sdk and update docs.

Reviewed changes

Copilot reviewed 31 out of 33 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
tsconfig.json	Adds packages/starknet as a TS project reference.
packages/starknet/tsconfig.json	New TS config for building the Starknet package.
packages/starknet/tests/encoding.test.ts	Adds cross-SDK encoding vector tests + roundtrips.
packages/starknet/tests/builder.test.ts	Adds tests for Starknet builder call construction and calldata layout.
packages/starknet/src/index.ts	Public exports for Starknet builder and event utilities.
packages/starknet/src/events.ts	Starknet receipt event extraction/parsing + isTransferFinalised.
packages/starknet/src/encoding.ts	Starknet ByteArray/signature encoding + ByteArray decoding utility.
packages/starknet/src/builder.ts	Starknet transaction builder producing starknet.js Call[].
packages/starknet/package.json	New published package definition and dependencies.
packages/sdk/tsconfig.json	Adds ../starknet to TS project references for SDK umbrella.
packages/sdk/src/index.ts	Re-exports @omni-bridge/starknet.
packages/sdk/package.json	Adds @omni-bridge/starknet dependency.
packages/evm/tests/builder.test.ts	Adds Abstract mainnet/testnet builder creation tests.
packages/evm/src/proof.ts	Adds Abstract RPC URLs and viem chain config selection.
packages/evm/README.md	Documents Abstract chain ID support and typing updates.
packages/core/tests/token.test.ts	Extends token parsing/recognition tests for abs/strk.
packages/core/tests/address.test.ts	Extends OmniAddress and isEvmChain tests for abs/strk.
packages/core/src/utils/token.ts	Adds known bridge tokens + wrapped token prefixes for abs/strk.
packages/core/src/utils/address.ts	Adds abs/strk prefixes and includes Abs in EvmChainKind.
packages/core/src/types.ts	Adds ChainKind.Abs/Strk, OmniAddress templates, ChainPrefix union.
packages/core/src/config.ts	Adds Abs/Strk addresses + EVM chain IDs (incl. Abstract).
packages/core/src/bridge.ts	Maps Abs/Strk into API chain names and contract address selection.
packages/core/src/api.ts	Extends Zod ChainSchema to include Abs and Strk.
docs/reference/evm.mdx	Updates EVM reference docs to include Abstract.
docs/reference/core.mdx	Updates core reference docs for new prefixes/chain kinds.
docs/introduction.mdx	Updates intro supported chains and adds Starknet card.
docs/guides/evm.mdx	Updates EVM guide to include Abstract chain option/table row.
docs/guides/advanced/manual-finalization.mdx	Updates manual finalization guide to mention Abs among L2s.
docs/getting-started.mdx	Updates getting started chain list to include Abstract.
docs/docs.json	Updates site description to include Abstract and Starknet.
docs/core-concepts/omni-addresses.mdx	Documents abs: / strk: OmniAddresses and ChainKind additions.
bun.lock	Adds workspace package entry and starknet dependency tree updates.
README.md	Updates root README supported chains and OmniAddress examples.

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[karim-en]

Please set the mainnet addresses