frp-persistence — durable storage backend for infinite-db frp.

Implements the [AtomStore], [BlockStore], and [EdgeStore] traits from frp-loom using infinite-db as the on-disk storage engine.

Quick-start

use frp_persistence::InfiniteDbStore;
use frp_loom::store::AtomStore;

let mut store = InfiniteDbStore::open("./data").unwrap();
// put / get / delete atoms, blocks, edges through the store traits…
store.flush().unwrap();

Design notes

• Write-through cache — the store traits return &Self::Atom borrowed references, so deserialized values must live inside the struct. All reads are served from in-memory HashMaps; writes go to both the cache and the WAL.
• EdgeTransform::Inline closures are not serializable and round-trip as PassThrough. Re-attach closures after loading a graph from the store.
• Call [InfiniteDbStore::flush] before process exit to seal WAL records into on-disk blocks.