feat(cli): add global remote builder configuration and native SSH buildx nodes for multi-platform builds

ts/interfaces/index.ts

@@ -95,3 +95,20 @@ export interface IDockerContextInfo {
   dockerHost?: string;   // value of DOCKER_HOST env var, if set
   topology?: 'socket-mount' | 'dind' | 'local';
 }
+
+/**
+ * A remote builder node for native cross-platform builds
+ */
+export interface IRemoteBuilder {
+  name: string;        // e.g., "arm64-builder"
+  host: string;        // e.g., "armbuilder@192.168.190.216"
+  platform: string;    // e.g., "linux/arm64"
+  sshKeyPath?: string; // e.g., "~/.ssh/id_ed25519"
+}
+
+/**
+ * Global tsdocker configuration stored at ~/.git.zone/tsdocker/config.json
+ */
+export interface IGlobalConfig {
+  remoteBuilders: IRemoteBuilder[];
+}