- Add sign command to tss-party.exe with GG20 9-round signing protocol
- Add participateSign() method to TSSHandler for TypeScript integration
- Add grpc:executeSign IPC handler in main.ts
- Add kava_evm chain config for EVM address derivation
- Fix ArrayBuffer type handling in Home.tsx export
- Add E2E test for keygen + signing flow (tss_party_e2e_test.go)
The signing implementation:
- Uses keygen share data (LocalPartySaveData) for signing
- Supports threshold signing (t-of-n with subset of parties)
- Returns signature (R || S), recovery ID for ecrecover
- Verified with ECDSA signature verification in E2E test
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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