results: close calibration quality recovery

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@@ -172,6 +172,19 @@ ineligible. No result from task seeds 3--5 may enter this selection. A selected
 frozen before a new independent panel on task seeds 6--8, and that panel must satisfy the original
 C2 gain/comparator/lesion conditions plus at least 10/15 positive depth gains and finite losses.
 
+**Calibration-quality recovery status: failed development on 2026-07-22.** K4/e4 and K16/e4
+reached only `65.633 ± 27.078%` and `65.567 ± 26.962%` at d4, with mean depth gains of `-0.583`
+and `-0.350` points. Each had only 1/3 positive depth gains and lesions; K16 also produced one
+nonfinite d4 loss. The frozen rule mechanically selects finite K4, but its negative depth gain
+prohibits spending untouched task seeds 6--8 on confirmation. Increasing target quality while A
+and W learn concurrently is therefore closed as a recovery branch.
+
+One feedback-first timescale screen is allowed next on development task seed 0. It will use an
+A-only calibration prefix with W and the output readout frozen, followed by the original
+context-gated simultaneous K1/e4 joint phase. The prefix uses layerwise K4 targets and the same
+`eta_A=0.01`; its length grid and selection rule must be committed before any run. This tests the
+specific coupled-basin diagnosis without increasing vectorizer capacity or changing the task.
+
 ### C3. Causal calibration is genuinely amortized
 
 **Status: passed on 2026-07-22.** The frozen five-seed confirmation retained 112.9% of the K16/e4