Introduce a gossip-converged pooled datastore protocol layered on SWIM piggybacking, backed by a reusable gossip-channel abstraction, plus a Docker-free multi-process cluster test runner.
- crates/distribution/src/gossip_channel.rs: add the GossipChannel trait (piggyback on SWIM messages) and a budget-limited DisseminationBuffer<T> that replaces the four duplicated Lambda*ceil(log2(n)) dissemination copies
- crates/datastore/src/pool: add PoolDisseminator (CRDT state for membership/capacity/content-location/ACL with join/leave/announce) and PoolCoordinator (placement-aware CRUD actor delegating to the co-located DatastoreNode)
- crates/shared-types/src/pool.rs: add shared pool protocol types (PoolId plus member/capacity/content-location/ACL entries and PoolConfig) consumed by both distribution and datastore
- crates/dashboard/src/pool_html.rs: add a live pool dashboard page (membership, capacity, content locations) and add pool_tests integration coverage
- xtask/src/sim_cluster.rs: add the sim-cluster runner that spawns N swactor nodes over iroh through a local relay server, reusing the docker cluster scenarios without Docker
- crates/distribution/src/iroh_driver.rs: add relay-URL resolution (cache, then SWIM gossip, then home relay) with a 2s connect timeout to back the relay-based connections
Signed-off-by: Zachery Aaron Shores-Chmielewski <zacheryasc@gmail.com>
Zachery Aaron Shores-Chmielewski
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