board: #1224 was a bidirectional domain inversion; file ISS-DISMECH-SEAM-INVERTED-BOTH-WAYS

Domain semantics crossed down into the thinking substrate while generic
counterfactual-replay algebra crossed up and was stranded under dismech_*
filenames (80% of 1,941 planner lines by #1224's own measurement). Both
directions are still in the tree; re-homing a helper was never sufficient
because the seam itself must be re-established.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HScwwezRdMxFfTs3WLG19d

Author: claude

.claude/board/EPIPHANIES.md

@@ -1,3 +1,36 @@
+## 2026-09-19 — E-1224-WAS-A-BIDIRECTIONAL-DOMAIN-INVERSION-NOT-A-LEAK-1
+
+**Status:** SHARPENING of the two entries below it. **Confidence:** high — both
+directions are measured in #1224's own body, and the second is still live.
+
+The two #1224 corrections below describe a one-way leak: disease-specific
+semantics crossed DOWN into the generic thinking substrate. That is half of it.
+#1224's own addendum measured the other half: of the 1,941 planner lines under
+`dismech_*` names, **1,547 (80 %) carry no DisMech semantics at all** —
+`dismech_counterfactual.rs` (674 lines, 0 domain refs) and `dismech_replay.rs`
+(873, one label lookup) are generic counterfactual-replay algebra that merely
+inherited a domain filename because MedCare was the first consumer. So generic
+reasoning crossed UP and got trapped inside domain vocabulary at the same time
+domain vocabulary crossed down. A Möbius strip, not a leak:
+
+```
+MedCare / DisMech semantics ──▼ leaked down ──▶ lance-graph thinking substrate
+lance-graph generic reasoning ──▲ leaked up ──▶ stranded behind dismech_* names
+```
+
+The boundary is supposed to be one-way and boring: domain semantics adapt /
+bind / provide evidence through the OGAR vocabulary and the loco seam INTO the
+generic substrate; generic results (mask, replay, evidence, causal result) come
+back and the DOMAIN interprets them in its own vocabulary. Neither a domain-named
+planner in the substrate nor generic algebra under a domain filename.
+
+**This is why "re-home the helper" was never enough** — the seam itself had to
+be re-established, and it has not been: all four `dismech_*` files are on this
+branch today (1,941 planner lines + `dismech_evidence.rs` in the zero-dep
+contract). Filed as `ISS-DISMECH-SEAM-INVERTED-BOTH-WAYS`. Cross-ref: the
+consumer-side mirror is `ogar-consumer-preflight.md` (a consumer never
+re-implements the Core locally) — the same seam, seen from the other bank.
+
 ## 2026-09-19 — E-1224-CLOSED-FOR-BEING-WRONG-NOT-FOR-LACKING-CONSUMERS-1
 
 **Status:** CORRECTION of the entry directly below this one. **Confidence:**

.claude/board/ISSUES.md

@@ -1,3 +1,26 @@
+## ISS-DISMECH-SEAM-INVERTED-BOTH-WAYS
+
+**Status:** OPEN. **Filed:** 2026-09-19. **Severity:** high — a live
+bidirectional domain inversion in the thinking substrate, measured, not fixed.
+
+Present on this branch: `lance-graph-planner/src/{dismech_candidates,
+dismech_counterfactual, dismech_replay}.rs` (1,941 lines) and
+`lance-graph-contract/src/dismech_evidence.rs`. Per #1224's own measurement
+(closed, unmerged), 80 % of the planner lines are generic counterfactual-replay
+algebra under a domain filename; `dismech_candidates.rs` (394 lines, 21 domain
+refs) is genuinely domain-bound. Both directions of the inversion are therefore
+still in the tree.
+
+**Resolution shape (not yet scheduled):** (1) re-home the generic 80 % under
+domain-neutral names in the planner with no behaviour change — a rename plus a
+`pub use` shim under I-LEGACY-API-FEATURE-GATED; (2) move `dismech_candidates`
+and the evidence vocabulary to the MedCare-rs / `ogar-dismech` adapter side of
+the loco seam; (3) a fence test: no `dismech` token in `lance-graph-planner` or
+`lance-graph-contract` sources afterwards. `nan-ci-mode-v1.md` depends on the
+generic half only (its own count: zero references to `dismech_candidates`), so
+(1) must land before or with any work on that plan. **Not a #1224 revival** —
+#1224 added domain semantics; this removes them.
+
 ## ISS-TWO-THINGS-ARE-NAMED-R2IL-AT-OPPOSITE-ENDS-OF-THE-LADDER
 
 **Status:** OPEN. **Filed:** 2026-09-19. **Severity:** high — this is the exact