fix(mcp): include portable data directory in configs

apps/desktop/src/lib/__tests__/mcp/mcpConfigTemplates.spec.ts

@@ -31,11 +31,12 @@ describe("MCP config templates", () => {
     const nodeLaunch = {
       command: "C:\\Program Files\\nodejs\\node.exe",
       args: ["C:\\Users\\supervisor\\AppData\\Roaming\\npm\\node_modules\\@dbx-app\\mcp-server\\bin\\dbx-mcp-server.js"],
+      env: { DBX_DATA_DIR: "D:\\GreenSoft\\DBX\\data" },
     };
     const nativeBinPath = "C:\\Users\\supervisor\\AppData\\Roaming\\npm\\node_modules\\@dbx-app\\mcp-win32-x64\\bin\\dbx-mcp.exe";
 
     expect(JSON.parse(buildMcpTraeConfig(nodeLaunch, nativeBinPath))).toEqual({
-      mcpServers: { dbx: { command: nativeBinPath } },
+      mcpServers: { dbx: { command: nativeBinPath, env: nodeLaunch.env } },
     });
     expect(JSON.parse(buildMcpTraeConfig(nodeLaunch))).toEqual({
       mcpServers: { dbx: nodeLaunch },
@@ -59,6 +60,16 @@ describe("MCP config templates", () => {
     expect(buildMcpJsonConfig(launch)).not.toContain("DBX_MCP_ALLOW_WRITES");
   });
 
+  it("includes the portable DBX data directory in JSON and Codex configs", () => {
+    const launch = {
+      command: "dbx-mcp-server",
+      env: { DBX_DATA_DIR: "D:\\GreenSoft\\DBX\\data" },
+    };
+
+    expect(JSON.parse(buildMcpJsonConfig(launch)).mcpServers.dbx.env).toEqual(launch.env);
+    expect(buildMcpCodexConfig(launch)).toContain('DBX_DATA_DIR = "D:\\\\GreenSoft\\\\DBX\\\\data"');
+  });
+
   it("keeps a deployed Web base path in DBX_WEB_URL", () => {
     expect(mcpWebBackendUrl("https://dbx.example.com", "/tools/dbx/api")).toBe("https://dbx.example.com/tools/dbx");
   });

apps/desktop/src/lib/backend/http.ts

@@ -3288,6 +3288,7 @@ export async function checkMcpServerStatus(): Promise<import("@/lib/backend/taur
     bin_path: null,
     native_bin_path: null,
     script_path: null,
+    data_dir: null,
     install_command: "npm install -g @dbx-app/mcp-server@latest --registry=https://registry.npmjs.org",
     update_command: "npm install -g @dbx-app/mcp-server@latest --registry=https://registry.npmjs.org",
     error: "MCP Server status is only available in the desktop app.",

apps/desktop/src/lib/backend/tauri.ts

@@ -1897,6 +1897,7 @@ export interface McpServerStatus {
   bin_path: string | null;
   native_bin_path: string | null;
   script_path: string | null;
+  data_dir: string | null;
   install_command: string;
   update_command: string;
   error: string | null;

apps/desktop/src/lib/mcp/mcpConfigTemplates.ts

@@ -41,7 +41,7 @@ export function buildMcpJsonConfig(config?: McpLaunchConfig): string {
 }
 
 export function buildMcpTraeConfig(config?: McpLaunchConfig, nativeBinPath?: string): string {
-  return buildMcpJsonConfig(nativeBinPath ? { command: nativeBinPath } : config);
+  return buildMcpJsonConfig(nativeBinPath ? { command: nativeBinPath, env: config?.env } : config);
 }
 
 export function buildMcpVsCodeConfig(config?: McpLaunchConfig): string {