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

metrics/metrics.go

@@ -7,7 +7,6 @@ import (
 	"sync/atomic"
 	"time"
 
-	apierrors "git.yuntuo.hk/k2safe/go-omni/errors"
 	"git.yuntuo.hk/k2safe/go-omni/httpx"
 )
 
@@ -46,10 +45,10 @@ func (m *Metrics) Middleware() httpx.Middleware {
 			err := next(ctx)
 			status := ctx.Status()
 			if err != nil && !ctx.Responded() {
-				status = apierrors.From(err).Status
+				status = ctx.ResolveError(err).Status
 			}
 			m.requests.Add(1)
-			if err != nil || status >= 400 {
+			if err != nil || ctx.Failure() != nil || status >= 400 {
 				m.errors.Add(1)
 			}
 			if status >= 0 && status < len(m.statuses) {