results: close context-vectorizer C2 recovery

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diff --git a/ROADMAP.md b/ROADMAP.md
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@@ -140,6 +140,14 @@ be positive; its d4 lesion must lose at least 2 points on average and harm at le
 Failure closes this recovery. Passing freezes a single test confirmation over task seeds 0--5,
 student seeds 0--4, all four methods, and d1/d4, retrained on the unchanged 8,000-example subsets.
 
+**Context-vectorizer recovery status: failed validation on 2026-07-22; test remains unevaluated.**
+Context-SDIL recovered `53.0%` of BP's depth gain (`+15.143` versus `+28.553` points), below 70%,
+and its d4 endpoint trailed FA by `1.643` points. One d4 trajectory had nonfinite final loss.
+Positive depth gains and positive lesion effects each occurred in exactly 10/15 runs, so those
+secondary conditions passed at the boundary. Context conditioning improves substantially over
+linear SDIL's 21.0% recovery but does not make causal-feedback learning reliable enough. The
+predeclared mechanism-recovery branch is closed and no C2 test panel will run.
+
 ### C3. Causal calibration is genuinely amortized
 
 **Status: passed on 2026-07-22.** The frozen five-seed confirmation retained 112.9% of the K16/e4