- KvEngine::Sqlite slots in; all six kv ops dispatch; the kv cursor
body dispatches through a new KvCursor sub-enum behind AnyCursor's
one kv arm (the kv-arm-over-multiple-kv-engines design point,
recorded)
- dual_tier_sqlite_local (kv = sqlite + large = local, the
default-build production shape) and kv_only_sqlite constructors —
both feature-gated on sqlite (default-on), both taking the
threshold and the delete-window delay, fallible where I/O is
fallible (Err(Error::Io) per the dual_tier_mem_local pattern)
- ensure_gc_schema runs at construction via the engine-neutral
KvEngine call (sqlite's body creates gc_window only); the
window-delay shipped default is the pinned
DEFAULT_DELETE_WINDOW_DELAY (5 min, ADR-008 §2), constructor-
tunable, Duration::ZERO legal — the store carries the value for
the sweep's durable form to consume
- the one-window-host posture recorded in the module doc (the
durable window hosts on the kv engine when it is SQL-backed; wave
5's pg-lo dormancy slots in without reshaping)
- stale empty-set scaffolding updated to the landed state: the
#[allow(unused_variables)] attrs off the KvEngine methods; the
scope notes in store.rs, backend.rs, sqlite.rs, gc.rs
- constructor unit tests: mode/threshold/window-delay introspection,
the GC schema observed in the fresh database (window table present,
gc_pins never), kv-only rejection wiring unchanged, and the
dual-tier shape round-tripping end-to-end through both tiers
Verification: cargo test 62 passed (default; 5 new tests), cargo test
--all-features 117, cargo test --features mem 117, --no-default-
features --features mem 97; cargo clippy --all-targets -- -D warnings
clean (default + all-features); cargo fmt --check clean; cargo doc
--no-deps at the pre-existing warning baseline.
glm-5.3-flash
2993df0e36