Preserve header sensitivity across colliding path shapes

docs/roadmap/remediation.md

@@ -162,7 +162,14 @@ issues remain. Findings 1 and 2 above remain completed historical findings.
 
 ### 3. Preserve distinct semantic shapes during evidence classification (P1)
 
-Status: open.
+Status: complete. Original evidence shapes are classified independently before
+their results enter the existing pointer-based sensitivity/dependency closure.
+Evidence no longer overwrites payload candidates. New engine and public
+regressions failed before the fix and pass afterward, covering both acquisition
+orders, schema tags, predicate observation of both shapes, and unchanged final
+payload. Focused source-version/sensitivity/history tests, the everyday check,
+and the full race suite passed on `go1.26.9 linux/amd64`. The implementation
+plan records the additional Stage 9–12 regression evidence.
 
 Affected: `classifySecretPathsWithEvidence` and `addSecretEvidencePath` in
 [secret.go](../../internal/engine/secret.go), lines 78–104 at `020d720`.