Testnet version 0.4: planned scope

This is not final and is subject to change without notice.

Logos Core

PoC for the new Core architecture C3A (CDDL Contract Commitment Architecture), as a proof of concept alongside the current Core.

Bitcoin Wallet and Bitcoin Node (bitcoind), with supporting modules.
Zcash Wallet and Zcash Node (zebrad), with supporting modules.
Revamped Signer for the Ethereum and Bitcoin wallets, with a unified Keystore and Keycard support.
Basecamp improvements:
- UI backends as Core modules, with one reference app ported and a QML-only UI path.
- Run apps standalone through Basecamp.
- Choose GitHub, Storage, or both as download sources during onboarding; show the source during downloads.
- Package signature checks, trusted-key management, and in-app Basecamp updates.
- Prompt to terminate modules that are slow to unload.

Eras: chain behaviour and consensus parameters can change through a hard fork at an era boundary.

Transactional actor model: programs compose atomically and exchange messages asynchronously across public and private execution.
Privacy-preserving transaction fees: private transactions pay fees inside their proof; wallets estimate fees through dry runs.
Atomic deposits from the base layer into LEZ, removing the previous finality wait for deposits.
LEZ sequencer runs as a Logos Core module.

Messaging API reaches General Availability, with reliability and scale validated by DST.
- send returns the message hash and fails fast on rate limits.
- Newly subscribed content topics are not backfilled from Store.
Monthly logos-delivery releases, followed by updates to the Delivery module.
At least half of the baseline technical-debt issues closed; target modular architecture agreed.
Store Sync hardening; DST sign-off is planned for v0.5.

Self-healing group chats: recovery from missed messages and group forks, with SDS and Ordering Policy integration.
Tools to diagnose group forks and measure group reliability.

RLN membership allocation service: end-to-end testnet membership allocation with pluggable authentication.
- Separate membership registry and allocation service for Mix, with its own rate-limit parameters.
Mix and Delivery packaged as a single module, deployable as an entry, exit, or intermediate node.
- Basic key rotation for forward secrecy.
- Poisson-rate cover traffic generation.
Service Discovery adopted as a Delivery plugin, with a simplified module and API.
De-MLS integration in libchat hardened against malformed messages and repeated membership operations.
Oracle nodes fetch prices from multiple independent sources, with basic dispute detection.
Zerokit release with Poseidon2 support, runtime validation of resource/hash-function combinations, and static analysis of Poseidon and Poseidon2 circuits.

Faster downloads over mix; target at least 20% improvement, subject to measurement.
Naming service: stable identifiers can point to different content IDs (CIDs) as content changes.
Service Discovery for Mix and DHT-proxy pools, removing manual pool configuration.