Arseniy Klempner 29c64b340d
feat: mix+LEZ+RLN chat over the testnet via 2-phase gifter
Chat-side integration of the LEZ-backed RLN mix protocol:
- src/chat/delivery/waku_client.nim: mount waku_mix with onchain
  RLN spam protection wired to logos_core_client fetchers; gate
  the first publish on (a) gifter status confirmation, (b)
  cushion of 2 poll intervals after confirmation, and (c) proof
  root stability in the local valid_roots window; wrap mix
  lightpush in withTimeout so vanished SURB replies surface as
  Err instead of pinning the send coroutine.
- src/chat/client.nim: surface sendBytes errors via asyncSpawn
  wrapped try/except instead of discarding the future (was
  hiding every mix-publish failure).
- chat-side gifter client invocation (RLN membership service
  wire format, EIP-191 ethereum-allowlist auth).
- Background membership status watcher that reconciles the
  optimistic leaf returned by the gifter against the chain's
  authoritative leaf via the status RPC.

Simulation harness (simulations/mix_lez_chat/):
- Spin up sequencer + run_setup + 4 mix nodes (one of which
  runs the gifter service) + chat sender + chat receiver.
- SIM_NETWORK={local,testnet}, SIM_SLIM for testnet (reuses
  shipped config_account + cached payment_account), Docker
  image + GHCR for cross-platform testing.
- Strict mix-pool readiness gate, kademlia + RLN root activity
  checks, gifter EIP-191 auth fixture, slim-mode submodule
  minimization.
- TREE_ID_HEX pinned to the canonical testnet deployment.

Submodule bumps:
- vendor/nwaku to 8e6ba04 (LEZ-backed RLN mix + 2-phase gifter).
- vendor/logos-lez-rln to 950f287 (SPEL RLN program + mix sim
  infrastructure + canonical testnet deploy).

Docs:
- RUN_SLIM_TESTNET.md: slim sim recipe.
- cleanup/MODE_A_GIFTER_SLOT_BUG.md: per-signer nonce collision
  postmortem driving the queue+worker fix.
2026-05-28 10:53:36 -06:00

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# Test fixtures for the RLN gifter EIP-191 auth path. NOT FOR PRODUCTION.
# Each value is a 64-hex-char secp256k1 private key. addresses.env holds
# the corresponding Ethereum addresses; if these keys change, regenerate
# the addresses (any keccak256(secp256k1 pubkey)[12:] tool will do).
KEY_MIX1=2c974e0a453f65dd2230d403f6981fc18f9a3ad7675afb647910e0798a3eaa4f
KEY_MIX2=b880df1f571109e646f641636794dfe7ffefc2aab19290ba0d720c407758304d
KEY_MIX3=0b1b5e18839a3e15b119519092e4a94a71122acf57d8b2e1014df0121cb6f0ea
KEY_SENDER=5284ac01fed5fcb6b26933ac4a901412b66fcd7ee5b945b799f147a3b42f49ef
KEY_RECEIVER=a5619d6bfde09f54165ec9da55a7be7380f1b258c8279177dbda5ac235d0e904