feat: add project-owned error catalogs and HTTP 200 failure contracts

httpx/bridge.go

@@ -45,9 +45,17 @@ func WrapMiddleware(middleware func(http.Handler) http.Handler) Middleware {
 				child.writer.(interface{ inheritCommit(int) }).inheritCommit(c.Status())
 			}
 			defer CleanupMultipart(r)
-			defer func() { c.values = child.values; c.encoder = child.encoder }()
-			if err := next(child); err != nil && !c.Responded() {
-				child.WriteError(err)
+			defer func() {
+				c.values = child.values
+				c.encoder = child.encoder
+				c.errorRegistry = child.errorRegistry
+				c.failure = child.failure
+			}()
+			if err := next(child); err != nil {
+				child.RecordError(err)
+				if !c.Responded() {
+					child.WriteError(err)
+				}
 			}
 		}))
 		if wrapped == nil {