fix(log): surface nested recovery metadata

Co-Authored-By: Virgil <virgil@lethean.io>

errors.go

@@ -211,11 +211,11 @@ func inheritRecovery(dst *Err, err error) {
 //
 //	retryAfter, ok := log.RetryAfter(err)
 func RetryAfter(err error) (*time.Duration, bool) {
-	var wrapped *Err
-	if As(err, &wrapped) {
-		if wrapped.RetryAfter != nil {
+	for err != nil {
+		if wrapped, ok := err.(*Err); ok && wrapped.RetryAfter != nil {
 			return wrapped.RetryAfter, true
 		}
+		err = errors.Unwrap(err)
 	}
 	return nil, false
 }
@@ -235,13 +235,25 @@ func IsRetryable(err error) bool {
 //
 //	next := log.RecoveryAction(err)
 func RecoveryAction(err error) string {
-	var wrapped *Err
-	if As(err, &wrapped) {
-		return wrapped.NextAction
+	for err != nil {
+		if wrapped, ok := err.(*Err); ok && wrapped.NextAction != "" {
+			return wrapped.NextAction
+		}
+		err = errors.Unwrap(err)
 	}
 	return ""
 }
 
+func retryableHint(err error) bool {
+	for err != nil {
+		if wrapped, ok := err.(*Err); ok && wrapped.Retryable {
+			return true
+		}
+		err = errors.Unwrap(err)
+	}
+	return false
+}
+
 // --- Standard Library Wrappers ---
 
 // Is reports whether any error in err's tree matches target.

errors_test.go

@@ -286,6 +286,16 @@ func TestRetryAfter_Good(t *testing.T) {
 	assert.Equal(t, retryAfter, *got)
 }
 
+func TestRetryAfter_Good_NestedChain(t *testing.T) {
+	retryAfter := 42 * time.Second
+	inner := &Err{Msg: "typed", RetryAfter: &retryAfter}
+	outer := &Err{Msg: "outer", Err: inner}
+
+	got, ok := RetryAfter(outer)
+	assert.True(t, ok)
+	assert.Equal(t, retryAfter, *got)
+}
+
 func TestIsRetryable_Good(t *testing.T) {
 	err := &Err{Msg: "typed", Retryable: true}
 	assert.True(t, IsRetryable(err))
@@ -296,6 +306,13 @@ func TestRecoveryAction_Good(t *testing.T) {
 	assert.Equal(t, "inspect", RecoveryAction(err))
 }
 
+func TestRecoveryAction_Good_NestedChain(t *testing.T) {
+	inner := &Err{Msg: "typed", NextAction: "inspect"}
+	outer := &Err{Msg: "outer", Err: inner}
+
+	assert.Equal(t, "inspect", RecoveryAction(outer))
+}
+
 func TestMessage_Good(t *testing.T) {
 	err := E("op", "the message", errors.New("base"))
 	assert.Equal(t, "the message", Message(err))

log.go

@@ -259,18 +259,18 @@ func (l *Logger) log(level Level, prefix, msg string, keyvals ...any) {
 		if As(err, &logErr) {
 			if _, hasRetryable := existing["retryable"]; !hasRetryable {
 				existing["retryable"] = struct{}{}
-				keyvals = append(keyvals, "retryable", logErr.Retryable)
+				keyvals = append(keyvals, "retryable", retryableHint(err))
 			}
-			if logErr.RetryAfter != nil {
+			if retryAfter, ok := RetryAfter(err); ok {
 				if _, hasRetryAfter := existing["retry_after_seconds"]; !hasRetryAfter {
 					existing["retry_after_seconds"] = struct{}{}
-					keyvals = append(keyvals, "retry_after_seconds", logErr.RetryAfter.Seconds())
+					keyvals = append(keyvals, "retry_after_seconds", retryAfter.Seconds())
 				}
 			}
-			if logErr.NextAction != "" {
+			if nextAction := RecoveryAction(err); nextAction != "" {
 				if _, hasNextAction := existing["next_action"]; !hasNextAction {
 					existing["next_action"] = struct{}{}
-					keyvals = append(keyvals, "next_action", logErr.NextAction)
+					keyvals = append(keyvals, "next_action", nextAction)
 				}
 			}
 		}

log_test.go

@@ -121,6 +121,33 @@ func TestLogger_ErrorContextIncludesRecovery_Good(t *testing.T) {
 	}
 }
 
+func TestLogger_ErrorContextIncludesNestedRecovery_Good(t *testing.T) {
+	var buf bytes.Buffer
+	l := New(Options{Output: &buf, Level: LevelInfo})
+	retryAfter := 30 * time.Second
+
+	inner := &Err{
+		Msg:        "inner failure",
+		Retryable:  true,
+		RetryAfter: &retryAfter,
+		NextAction: "retry later",
+	}
+	outer := &Err{Msg: "outer failure", Err: inner}
+
+	l.Error("request failed", "err", outer)
+
+	output := buf.String()
+	if !strings.Contains(output, "retryable=true") {
+		t.Errorf("expected output to contain retryable=true, got %q", output)
+	}
+	if !strings.Contains(output, "retry_after_seconds=30") {
+		t.Errorf("expected output to contain retry_after_seconds=30, got %q", output)
+	}
+	if !strings.Contains(output, "next_action=\"retry later\"") {
+		t.Errorf("expected output to contain next_action=\"retry later\", got %q", output)
+	}
+}
+
 func TestLogger_Redaction_Good(t *testing.T) {
 	var buf bytes.Buffer
 	l := New(Options{