release-readme: the root README written last, honestly — crate family table with per-engine honest postures (ADR-016 compile-time identity, deployment.md as the boundary), mem-carried usage sketch compile-checked and executed against the real API, contract-suite pointer (three engines, one pinned contract), license note; LICENSE-MIT + LICENSE-APACHE per the family pattern (substrate notice untouched per ADR-018); CHANGELOG seeded with the 0.1.0 contract-v1 entry; per-crate readme wiring decided + landed (pointer-style per-crate readmes, readme fields wired on the four published crates); honesty trace list in task Notes; task -> completed

alkstore-mem/Cargo.toml

@@ -4,6 +4,7 @@ version.workspace = true
 edition.workspace = true
 license.workspace = true
 repository.workspace = true
+readme = "README.md"
 
 [dependencies]
 alkstore = { version = "0.1", path = "../alkstore" }

alkstore-mem/README.md

@@ -0,0 +1,24 @@
+# alkstore-mem
+
+The mem engine of the [alkstore](https://git.alk.dev/alkdev/alkstore/blob/main/README.md)
+family: the full core contract v1 implemented on guarded in-process
+state — every mechanism, every guarantee row — with zero
+configuration.
+
+```rust
+let store = alkstore_mem::MemStore::new();
+```
+
+**Engine posture — honest-ephemeral.** No durability, single-process,
+never fleet-valid: there is no cross-process story at all, loss on
+process exit is the documented posture, and the dependency on this
+crate *is* the ephemerality declaration. Each `MemStore::new()` yields
+a fully isolated instance sharing nothing; teardown is drop. The
+dependency on tokio is restricted to the wasm-supported subset (sync +
+time) — this crate compiles clean on `wasm32-unknown-unknown`, the
+family member that runs in the sandbox.
+
+See the [family README](https://git.alk.dev/alkdev/alkstore/blob/main/README.md)
+for the interface and the deployment matrix, and the
+[mem engine spec](https://git.alk.dev/alkdev/alkstore/blob/main/docs/architecture/engine-mem.md)
+for the architecture.