@@ -1,3 +1,7 @@
+## 2026-10-20 — d-relalg-unified-v1 — JC/R statistics and Datalog sharing work through the contract set IR → `.claude/plans/d-relalg-unified-v1.md`
+
+**Status:** PROPOSAL, documentation only. Decisions recorded: ADMISSION = B, D-RA-2 = A. There is no shared relational AST, and none is built: each layer gets the smallest extension. JC batches share the power-sum terminals (U1, first); `let`-bound planes go on the contract IR after D-CMR-1 (U2); a co-addressed join over `JoinDomain`; Quack gets measured pins, not a cost model; recursion over BIND tiles is gated on an attested slot assignment. Three negatives (no JC expression IR, no D-CMR set IR code, no D-MSUB) are grep-only and not yet fully verified. Entry `2026-10-20-d-relalg-unified.md`.
+
 ## 2026-10-20 — d-rmap-dir-1-membership-closure-focus-v1 — compiled membership closure vs a 256-slot focus over dir-sim → `.claude/plans/d-rmap-dir-1-membership-closure-focus-v1.md`
 
 **Status:** D-RMAP-DIR-1 MEASURED, lab only (`crates/dir-rmap-probe`); D-RMAP-DIR-2 PROPOSED, not authorized. Sharing compiled closure rows across users (B+) is where the acceleration comes from (thousands of times over dir-sim's per-call scan); a 256-slot focus (F) adds at most 2× and only for small foci reused about 1,000 times. Entry `2026-10-20-d-rmap-dir-1-membership-closure-focus.md`.
 
@@ -1,6 +1,6 @@
 ## ISS-ADMISSION-PREP-BINDING — may preparation translate global identities into focus slots before a fold? (2026-10-20)
 
-**Status:** RULED 2026-10-20 (ADMISSION option B, `entries/2026-10-20-six-decisions.md` §1): same-table, version-witnessed key-range seeks over an attested sorted key are admitted in preparation; a position derived from another column or table is not, whatever the phase. D-MPS-8 stays conditionally blocked (a value-to-relationship-table read position is option C); D-RPR-1 and D-RST-4/6 are admitted only where they classify under B. Was: OPEN (operator ruling). **Basis:** VERIFIED-IN-CODE (`crates/mork-pathmap-probe/src/{rmap,join,chain}.rs`) and MEASURED (D-RMAP-1A §8, Schnellverschluss §7b, D-RPR §11.10).
+**Status:** RULED 2026-10-20 (ADMISSION option B, `entries/2026-10-20-six-decisions.md` §1): same-table, version-witnessed key-range seeks over an attested sorted key are admitted in preparation; a position derived from another column or table is not, whatever the phase. Frozen codebook lookups are admitted under the attestation the plan defines (`d-relalg-unified-v1.md` § Decisions). D-MPS-8 stays conditionally blocked (a value-to-relationship-table read position is option C); D-RPR-1 and D-RST-4/6 are admitted only where they classify under B. Was: OPEN (operator ruling). **Basis:** VERIFIED-IN-CODE (`crates/mork-pathmap-probe/src/{rmap,join,chain}.rs`) and MEASURED (D-RMAP-1A §8, Schnellverschluss §7b, D-RPR §11.10).
 
 - One question under five names. Each row keeps its own wording and points here:
   - D-RMAP-1 §6, the BIND membrane review;
 
@@ -1,3 +1,19 @@
+## D-RU — D-RELALG-UNIFIED: JC/R statistics and Datalog sharing work through the contract set IR (2026-10-20)
+
+Plan: `.claude/plans/d-relalg-unified-v1.md`. Decisions recorded there: ADMISSION = B, D-RA-2 = A. Acceptance for U1 and U2 is measured row traversals, materializations and total cost with the result set and version semantics unchanged; operator counts alone do not suffice.
+
+| D-id | scope | status | gate / falsifier |
+|---|---|---|---|
+| **D-RU-0** | decisions: ADMISSION = B, D-RA-2 = A | DECIDED (operator, 2026-10-20) | — |
+| **D-RU-1** | U1: JC statistical batch, distinct (selection, key, lane pair) triples over shared power-sum terminals | Queued (authorized; first) | rows traversed and terminal passes below the per-request baseline; results bit-exact on integer lanes; overflow refused, not wrapped; R references |
+| **D-RU-2** | U2: `let`-bound planes on the contract IR, immutable `Plane(i)`, versioned coordinates, no DAG inside a fold | Queued (after D-CMR-1) | rows traversed and planes materialized against recompute; width test ≤ 3 slots; answers and versions unchanged |
+| **D-RU-3** | cross-rule CSE in crepe-plan-probe (256-rule benchmark, separate from the hop benchmark) | Queued (after D-RU-2) | answers == crepe and ascent; traversals and materializations measured |
+| **D-RU-4** | co-addressed join operator over `JoinDomain` | Queued (after D-RU-2) | parity with the star path; no position taken from another table's values |
+| **D-RU-5** | Quack physical pins (dense vs sorted, materialize vs recompute) | Queued (after D-RU-3/4) | can-fire and can-stay-silent per pin |
+| **D-RU-6** | recursion driver over BIND tiles (256-hop benchmark) | Queued (slot assignment must be argued as an attested frozen-codebook lookup under ADMISSION = B) | least fixpoint == datafrog; ≥ 200 iterations asserted; cycles terminate |
+| **D-RU-7** | prefetch and staging of Arm B ranges | Queued (after D-RU-6 or a non-recursive multi-stage plan) | critical-path overlap measured; bytes read unchanged |
+| **D-RU-8** | Wikidata- and SAP-shaped fixtures with completeness refusals | Queued (after D-RU-6/7) | `!R` refused under an incomplete scope |
+
 ## MORK / PathMap Schnellverschluss (2026-10-19)
 
 Plan `mork-pathmap-schnellverschluss-v1.md`; entry `entries/2026-10-19-mork-pathmap-schnellverschluss.md`.
@@ -227,7 +243,7 @@ Plan: `.claude/plans/relalg-v1.md`. Crate: `crates/lance-graph-relalg` (own work
 | **D-HOLO-H14c** | Thought-first positional reads `Thought(t)[Table(a)[i] : Table(b)[i]]`: point projection, presence/Hamming populations through mask-risc, explicit terminal rows; memory and fragmentation of positional tables; Lance 13 masked I/O; coordinate identity across rewrites (sub-ids -1 … -6) | Measured 2026-10-15 (v4, entry 2026-10-15-d-holo-h14c-thought-first): acceptance A–E met (tables consulted == k for every U; k = 2 read at U = 31 0.90–1.16x U = 2); C vs B on query-shaped reads mixed; uniform 1 % positional tables ≈ 93x payload resident (flagged); Lance prediction holds (uniform 1 % mask 1.00x bytes, clustered 0.24x); stale maps omit silently, refused by the version check; returned to the operator | tables consulted == requested lanes for every touched count; at k = 2, U = 31 read <= 1.25x U = 2; populations load no value; no row materialized outside the terminal; no wrong coordinate across rewrites; Lance prediction (1 % uniform mask does not halve bytes_read, 1 % clustered does) |
 | **D-HOLO-H14d** | C's own operation in four stages, C only: (1) relalg symbolic reduction of the thought's set expression, (2) materialize `R = P_a ∧ P_b ∧ A` (or `∨`) over presence planes, (3) Lance 13 read pruned by `R`, (4) COUNT/EXISTS from `R` or the operation on `T_a[i], T_b[i]` for survivors; sub-ids -1 … -5 | Measured 2026-10-16 (v4, entry 2026-10-16-d-holo-h14d-logic-mask-read): stage 1 decides 675/2,000 programs with 0 runs, 396 answered only after the rewrite, 2 widened (ISS-RELALG-ABSORPTION-AFTER-DE-MORGAN), passes 1,065 vs 5,898; R costs 2–10 ns per 64-address word; Lance scans exactly |R| everywhere, bytes 1.00x at uniform 1 % full tile, 0.19x clustered 1 %, 0.01–0.12x inside a 1,024/8,192 aperture; payload ~6 ns per lane load, reads == |R| × k, not flat at small |R| (fixed word scan; prediction 4 falsified); fused Σ ~1.3 ns per value; point query 8–45 ns hot; returned to the operator | `R` == per-address reference; rewritten == as written on 2,000 programs; payload reads == |R| × k; Lance rows == |R| with reference values; five disable runs red |
 | **D-RA-1** | `Rel` + `normalize` + `symbolic` + R2IL lowering | Shipped #1546 `c21bd165` (11 tests, 11 disable runs red; four comparisons on one lane 8 → 2 ops; 70/2,000 small descriptions refused as written, all run rewritten) | == row oracle over 400 generated descriptions × 5 measures |
-| **D-RA-2** | Rules into the contract set IR (D-CMR-1/-6); relalg keeps only lowering or is deleted | DECISION 2026-10-20: option A, the contract owns the single-table set-algebra rewrites; relalg keeps relational planning, joins and lowering (`entries/2026-10-20-six-decisions.md` §2). Next: D-CMR-1 | relalg tests pass unchanged against the contract IR |
+| **D-RA-2** | Rules into the contract set IR (D-CMR-1/-6); relalg keeps only lowering or is deleted | DECISION 2026-10-20: option A, the contract owns the single-table set-algebra rewrites; relalg keeps relational planning, joins and lowering (`entries/2026-10-20-six-decisions.md` §2). No general relational AST for JC or Quack (`d-relalg-unified-v1.md` § Decisions). Next: D-CMR-1 | relalg tests pass unchanged against the contract IR |
 | **D-RA-3** | Datalog rules as algebra values; names are labels resolved through the label codebook, never strings in a rule — council v3 (2026-10-16) places the Datalog VALUES in `metta::datalog`; D-RA-2 still gates relalg | Queued (after D-RA-2) | codebook-built rules == hand-written `Rel`; unknown label refused at resolution |
 | **D-RA-4** | **⛔ VIOLATION — GATHER. DO NOT BUILD. CORRECT: D-HOLO-H14c / H14d.** Bound recursion via external frontier driver over D-CMR-5 preimage | Queued (after D-CMR-5) | == row-oracle closure; frontier past bound refused |
 
 
@@ -0,0 +1,20 @@
+# 2026-10-20 — D-RELALG-UNIFIED: assessment, decisions, stage order
+
+**Status:** PROPOSAL (documentation only). Plan: `.claude/plans/d-relalg-unified-v1.md`. D-ids D-RU-0..8 (STATUS_BOARD).
+
+## Decided
+
+- ADMISSION = B (operator, 2026-10-20): counted, version-witnessed same-table seeks are admitted in preparation; cross-table positional gathers stay forbidden; frozen codebook lookups are admitted under the defined attestation; D-MPS-8 is not cleared automatically. `ISS-ADMISSION-PREP-BINDING` status updated.
+- D-RA-2 = A (operator, 2026-10-20): the single-table set algebra and its rewrite rules belong in `lance-graph-contract`; relalg keeps lowering and relational planning; no general relational AST for JC or Quack.
+
+## Assessment
+
+- The shared RelAlg expression graph does not exist. relalg is a single-table Boolean selection algebra with a terminal measure; Quack has no cost model and does not consume relalg.
+- JC's statistics already lower to shared sufficient-statistics terminals (`GroupPowerSumsI32`, `GroupCrossPowerSumsI32`); batching requests over distinct (selection, key, lane pair) triples needs no new IR. That is U1.
+- A DAG inside one fold would lose `call_owned`'s constant width; sharing goes through `let`-bound planes instead (U2, on the contract IR).
+
+## OPEN
+
+- Three grep-only negatives are not yet fully verified: no JC expression IR, no D-CMR set IR code, no D-MSUB.
+- The 256-rule and the 256-hop benchmarks are separate; rule sharing is no evidence for hop amortization.
+- D-MPS-8, D-RPR-1, D-RST-4/6 and `quarantined-gather-hop` keep their own reviews under ADMISSION = B.
@@ -25,7 +25,7 @@ index row, (3) no duplicate entry id. Checks 1 and 2 are deliberately
 opposite directions; the stranding this convention prevents shows up in
 exactly one of them, never both.
 
-394 entries, 2026-08-06 .. 2026-10-20.
+395 entries, 2026-08-06 .. 2026-10-20.
 
 | date | entry id | finding | file |
 |---|---|---|---|
@@ -46,6 +46,7 @@ exactly one of them, never both.
 | 2026-10-20 | `D-RMAP-2` |  | [2026-10-20-d-rmap-2-tile-gemm-cell.md](2026-10-20-d-rmap-2-tile-gemm-cell.md) |
 | 2026-10-20 | `D-RMAP-2-AMX` |  | [2026-10-20-d-rmap-2-amx-tier.md](2026-10-20-d-rmap-2-amx-tier.md) |
 | 2026-10-20 | `D-RMAP-2-AMX-RERUN` | §5a-AMX re-measured on a second AMX host | [2026-10-20-d-rmap-2-amx-remeasured.md](2026-10-20-d-rmap-2-amx-remeasured.md) |
+| 2026-10-20 | `D-RELALG-UNIFIED` |  | [2026-10-20-d-relalg-unified.md](2026-10-20-d-relalg-unified.md) |
 | 2026-10-20 | `D-SRAM-2` |  | [2026-10-20-crepe-rule-optimizer-spike.md](2026-10-20-crepe-rule-optimizer-spike.md) |
 | 2026-10-20 | `ce64-isa-not-storage` |  | [2026-10-20-ce64-isa-not-storage.md](2026-10-20-ce64-isa-not-storage.md) |
 | 2026-10-20 | `arm-b-prepare` |  | [2026-10-20-arm-b-prepare.md](2026-10-20-arm-b-prepare.md) |