diff --git a/docs/plans/implementation.md b/docs/plans/implementation.md
index 1fd5edf..e480476 100644
--- a/docs/plans/implementation.md
+++ b/docs/plans/implementation.md
@@ -410,9 +410,16 @@ gate wiring → review gate):
 - `fuzz-parser-exposure` — §3.2's design point, resolved: **option
   (b)**, `#[doc(hidden)]` narrow re-exports of the three
   `parse_every_interval` implementations + the three `skip_forward`
-  boundary functions at each engine crate root (substrate untouched —
-  lineage fidelity), with (a) as the recorded in-suite companion and
-  (c) rejected per the family's no-`#[cfg(fuzzing)]` experience.
+  boundary functions at each engine crate root, with (a) as the
+  recorded in-suite companion and (c) rejected per the family's
+  no-`#[cfg(fuzzing)]` experience. Amended at implementation
+  (2026-10-10, user-confirmed): `pub use` requires item-level `pub`
+  (E0364 — the original "substrate untouched" criterion was
+  unsatisfiable), so the substrate delta is visibility-only — two
+  keywords in the *re-derived* `queue_ops.rs` (which
+  `substrate/mod.rs` itself classifies as owned contract-v1 code, not
+  lineage body), registered as a PROVENANCE.md delta entry; the
+  lineage body stays untouched.
 - `fuzz-target-payload-codec` — the §3.1 target (core payload
   encode/decode invariants: no-panic, the typed-failure partition,
   deep-input loudness, Value + typed round-trips) + its seeds.
diff --git a/tasks/fuzz-parser-exposure.md b/tasks/fuzz-parser-exposure.md
index ddc45fd..5954732 100644
--- a/tasks/fuzz-parser-exposure.md
+++ b/tasks/fuzz-parser-exposure.md
@@ -24,27 +24,46 @@ the parsers are engine-internal test surfaces, not contract surface
 the `#[doc(hidden)]` precedent already exists in-repo for exactly this
 shape of narrow, undocumented-but-public access.
 
-What gets exposed, per engine — **at the engine crate root only;
-substrate files untouched** (the SQLite parser and its `skip_forward`
-live in the lineage-governed `substrate/queue_ops.rs`, ADR-012 §3 — the
-exposure is a re-export in the engine's `lib.rs`, never a substrate
-edit):
+What gets exposed, per engine — `#[doc(hidden)] pub use` re-exports at
+the engine crate root:
 
-- **alkstore-sqlite**: `#[doc(hidden)] pub use` of
-  `parse_every_interval` (`Result<i64, String>`) and `skip_forward`
-  from `substrate::queue_ops`.
+- **alkstore-sqlite**: `parse_every_interval` (`Result<i64, String>`)
+  and `skip_forward` from `substrate::queue_ops`, widened to `pub` in
+  place and re-exported from `lib.rs`.
 - **alkstore-postgres**: `parse_every_interval` (`Result<i64>` →
-  `InvalidSpec`, currently `pub(crate)`) and `skip_forward` (currently
-  private) widened to `pub(crate)` as needed and `#[doc(hidden)] pub
-  use`-re-exported from `lib.rs`.
+  `InvalidSpec`) and `skip_forward` from `scheduler.rs`, widened to
+  `pub` in place and re-exported from `lib.rs`.
 - **alkstore-mem**: same shape as pg (`scheduler.rs`'s parser +
   `skip_forward`).
 
+**The mechanical constraint this task was decomposed against (resolved
+2026-10-10 with the user — do not re-derive):** `pub use` re-exports
+require the item itself to carry `pub` — `pub(crate)` and module-private
+items fail with E0364/E0603 (compile-probed). The decomposition's
+original "substrate files untouched" criterion was therefore
+unsatisfiable for SQLite and was amended: the substrate delta is
+**visibility-only** (`pub(crate)`→`pub` on the parser, private→`pub` on
+`skip_forward` — two keywords in `queue_ops.rs`), which is legitimate
+because `substrate/mod.rs` itself classifies `queue_ops.rs` as *the
+re-derived half — owned contract-v1 code, not lineage body*; the
+ADR-012 §3 lineage-fidelity discipline governs the ported honker body
+(`watcher.rs`, `connection.rs`, …), untouched here. Containment holds:
+`mod substrate` is private (`lib.rs`), so `pub` items inside leak
+nothing until re-exported. The delta **must** be recorded as a
+PROVENANCE.md register entry (the D-31 one-line-delta precedent —
+category `re-derivation`-adjacent; a visibility-only delta on
+re-derived code, registered so the story stays complete). pg/mem widen
+to `pub` (not `pub(crate)`) for the same E0364 reason — their
+`scheduler.rs` files are engine-owned, no provenance concern.
+
 Doc posture: each re-export carries a one-line doc note marking it a
 fuzz/test-only surface (not contract surface, not consumer API, no
 stability guarantee) — the `Job::from_row` precedent's doc style. No
 engine behavior changes; no parser logic moves; the diff is visibility
-plus re-exports.
+keywords plus re-exports. The semver note is recorded, not hidden:
+doc-hidden `pub` items are still public API (removal is technically
+breaking) — the same commitment the four core `#[doc(hidden)]`
+constructors already made, bounded here to a fuzz/test purpose.
 
 The **(a) companion** is recorded, not built: the public `schedule()`
 path against the mem and SQLite factories remains the suite's behavioral
@@ -57,8 +76,13 @@ differential runs on the exposed functions.
 - [ ] All three engines re-export their `parse_every_interval` and
       `skip_forward` from the crate root, `#[doc(hidden)]`, with the
       fuzz/test-only doc note
-- [ ] `alkstore-sqlite/src/substrate/**` diff is empty (lineage
-      fidelity preserved — the exposure is engine-side only)
+- [ ] `alkstore-sqlite/src/substrate/**` diff is **visibility-only**:
+      exactly the two keywords in `queue_ops.rs` (`parse_every_interval`
+      → `pub`, `skip_forward` → `pub`); the lineage body
+      (`watcher.rs`, `connection.rs`, `ops.rs`, `schema.rs`, `mod.rs`)
+      untouched; a PROVENANCE.md delta entry records the change
+- [ ] pg/mem `scheduler.rs` diffs are visibility-only (two keywords
+      each: parser → `pub`, `skip_forward` → `pub`) plus nothing else
 - [ ] The re-exports are reachable from an external crate (pinned by a
       compile-level test or the `fuzz-target-every-parse` build itself;
       record which)
@@ -73,7 +97,13 @@ differential runs on the exposed functions.
 - docs/research/fuzzing.md §3.2 (the design point this resolves —
   options (a)/(b)/(c) and the lean)
 - docs/architecture/decisions/012-forked-substrate-design.md §2–§3
-  (one-owner parsers; substrate lineage fidelity)
+  (one-owner parsers; substrate lineage fidelity — and its boundary:
+  the re-derived half is alkstore-owned)
+- alkstore-sqlite/src/substrate/mod.rs (the module doc's own
+  classification: `queue_ops.rs` is "owned contract-v1 code, not
+  lineage body")
+- alkstore-sqlite/src/substrate/PROVENANCE.md (the delta register the
+  visibility delta is recorded in; D-31 — the one-line-delta precedent)
 - docs/architecture/decisions/017-contract-versioning.md §3 (the
   `#[doc(hidden)]` precedent's policy boundary — engine-internal
   surfaces sit outside it)
diff --git a/tasks/review-wave-7.md b/tasks/review-wave-7.md
index 2718172..d9bd4c9 100644
--- a/tasks/review-wave-7.md
+++ b/tasks/review-wave-7.md
@@ -32,8 +32,11 @@ the fuzz wave as landed:
    diff); grown corpora + artifacts gitignored; nothing
    campaign-generated leaked into git.
 4. **Named design points audited as resolved** (the plan's wave-7
-   list): §3.2's parser exposure (option (b) landed, substrate diff
-   empty, the (a)-companion disposition recorded); the AGENTS.md
+   list): §3.2's parser exposure (option (b) landed; the substrate
+   delta visibility-only and confined to the re-derived `queue_ops.rs`
+   with its PROVENANCE.md entry — the amended criterion, per the
+   E0364 resolution recorded in `fuzz-parser-exposure.md`; the
+   (a)-companion disposition recorded); the AGENTS.md
    verification-list flip (gate line present, fuzzing paragraph
    truthful); the workspace/publish-exclusion mechanism (`exclude =
    ["fuzz"]` on the root workspace table — the *verification* that no