test(confidence-engine): capture tentative mapping regression

tests/graph/focused-investigation-boundaries.test.js

@@ -235,8 +235,8 @@ describe("validateFocusedDeconstructSchema", () => {
 // ── Regression fixture integrity (zero live calls) ──────────────────────────
 
 describe("FOCUSED_DECONSTRUCT_REGRESSION_CASES fixture integrity", () => {
-  it("has exactly 7 cases", () => {
-    expect(FOCUSED_DECONSTRUCT_REGRESSION_CASES.length).toBe(7);
+  it("has exactly 8 cases", () => {
+    expect(FOCUSED_DECONSTRUCT_REGRESSION_CASES.length).toBe(8);
   });
 
   it("all IDs are unique", () => {
@@ -249,7 +249,7 @@ describe("FOCUSED_DECONSTRUCT_REGRESSION_CASES fixture integrity", () => {
     expect(ids).toContain("structural-frontier-over-working-example-detail");
   });
 
-  it("preserves all six original case IDs", () => {
+  it("preserves all original case IDs and includes the new eighth case", () => {
     const ids = FOCUSED_DECONSTRUCT_REGRESSION_CASES.map((c) => c.id);
     for (const origId of [
       "nearest-frontier-wins",
@@ -258,9 +258,11 @@ describe("FOCUSED_DECONSTRUCT_REGRESSION_CASES fixture integrity", () => {
       "juxtaposition-must-not-create-link",
       "tentative-observation-fidelity",
       "genuine-dependency-frontier",
+      "structural-frontier-over-working-example-detail",
     ]) {
       expect(ids).toContain(origId);
     }
+    expect(ids).toContain("tentative-condition-must-not-map-to-specific-items");
   });
 
   it("validateRegressionFixtureIntegrity reports zero errors", () => {