fix: route macOS remote config via gateway

apps/macos/Sources/Clawdis/ConfigStore.swift

@@ -0,0 +1,48 @@
+import Foundation
+
+enum ConfigStore {
+    private static func isRemoteMode() async -> Bool {
+        await MainActor.run { AppStateStore.shared.connectionMode == .remote }
+    }
+
+    static func load() async -> [String: Any] {
+        if await self.isRemoteMode() {
+            return await self.loadFromGateway()
+        }
+        return ClawdisConfigFile.loadDict()
+    }
+
+    static func save(_ root: [String: Any]) async throws {
+        if await self.isRemoteMode() {
+            try await self.saveToGateway(root)
+        } else {
+            ClawdisConfigFile.saveDict(root)
+        }
+    }
+
+    private static func loadFromGateway() async -> [String: Any] {
+        do {
+            let snap: ConfigSnapshot = try await GatewayConnection.shared.requestDecoded(
+                method: .configGet,
+                params: nil,
+                timeoutMs: 8000)
+            return snap.config?.mapValues { $0.foundationValue } ?? [:]
+        } catch {
+            return [:]
+        }
+    }
+
+    private static func saveToGateway(_ root: [String: Any]) async throws {
+        let data = try JSONSerialization.data(withJSONObject: root, options: [.prettyPrinted, .sortedKeys])
+        guard let raw = String(data: data, encoding: .utf8) else {
+            throw NSError(domain: "ConfigStore", code: 1, userInfo: [
+                NSLocalizedDescriptionKey: "Failed to encode config."
+            ])
+        }
+        let params: [String: AnyCodable] = ["raw": AnyCodable(raw)]
+        _ = try await GatewayConnection.shared.requestRaw(
+            method: .configSet,
+            params: params,
+            timeoutMs: 10000)
+    }
+}