frpc: support store source config

pkg/config/v1/store.go

@@ -0,0 +1,26 @@
+// Copyright 2026 The frp Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package v1
+
+// StoreConfig configures the built-in store source.
+type StoreConfig struct {
+	// Path is the store file path.
+	Path string `json:"path,omitempty"`
+}
+
+// IsEnabled returns true if the store is configured with a valid path.
+func (c *StoreConfig) IsEnabled() bool {
+	return c.Path != ""
+}