Scaffold Cargo workspace: alkstore core + sqlite/postgres engine stubs (ADR-001)

tasks/scaffold-workspace.md

@@ -1,7 +1,7 @@
 ---
 id: scaffold-workspace
 name: Cargo workspace scaffold (three crates per ADR-001)
-status: pending
+status: completed
 depends_on: []
 scope: narrow
 risk: low
@@ -63,8 +63,35 @@ outside tests, no comments in code (doc comments on public API fine).
 
 ## Notes
 
-> To be filled by implementation agent
+- Edition **2024** with `resolver = "3"` (the task left "2 or 3 per
+  edition" open): wave 2 ports honker-core — an edition-2024 crate —
+  into `alkstore-sqlite` as a module subtree (ADR-011/013); a 2021
+  workspace would force an edition down-migration of the forked lineage
+  for no benefit. rusqlite 0.40 already forces rustc ≥ 1.99, so no new
+  toolchain floor is introduced.
+- Family conventions copied from alknet/alktty: repository URL
+  `https://git.alk.dev/alkdev/alkstore`, `Cargo.lock` committed,
+  `.gitignore` of `target/` + `.worktrees/`. LICENSE-MIT/LICENSE-APACHE
+  files at repo root are **not** added here — they belong with the
+  release-readiness/publish-prep work (wave 6), matching the repo's
+  no-honest-artifact-yet posture; the manifests already declare the
+  license field per the task spec.
+- Engine manifests pin the core path dependency with the version field
+  set per ADR-017 §4.1 carrier 1:
+  `alkstore = { version = "0.1", path = "../alkstore" }`.
+- `alkstore-postgres` carries tokio with `rt-multi-thread` + `macros`
+  features (a usable runtime + `#[tokio::test]` out of the box); the
+  acceptance criterion permits tokio on the postgres side only.
+- No CI wiring added, per docs/plans/implementation.md (manual CI).
 
 ## Summary
 
-> To be filled on completion
+Workspace scaffold complete: root `Cargo.toml` (resolver 3, shared
+`[workspace.package]`: version 0.1.0 placeholder, edition 2024, MIT OR
+Apache-2.0, repository) with three members — `alkstore` (empty lib,
+zero dependencies), `alkstore-sqlite` (core path pin + rusqlite ^0.40
+`bundled`), `alkstore-postgres` (core path pin + tokio + tokio-postgres
+0.7 + deadpool-postgres 0.14). All acceptance criteria verified:
+`cargo build` compiles all three; dependency trees confirmed via
+`cargo tree`; versioned core pins present in both engine manifests;
+clippy `-D warnings` and `cargo fmt --check` clean.