feat(mcp): add DeepSeek Harness configuration

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

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { buildMcpCherryStudioConfig, buildMcpCodexConfig, buildMcpJsonConfig, buildMcpOpenCodeConfig, buildMcpPiConfig, buildMcpTraeConfig, buildMcpVsCodeConfig, mcpWebBackendUrl } from "@/lib/mcp/mcpConfigTemplates";
+import { buildMcpCherryStudioConfig, buildMcpCodexConfig, buildMcpDeepSeekHarnessConfig, buildMcpJsonConfig, buildMcpOpenCodeConfig, buildMcpPiConfig, buildMcpTraeConfig, buildMcpVsCodeConfig, mcpWebBackendUrl } from "@/lib/mcp/mcpConfigTemplates";
 
 describe("MCP config templates", () => {
   it("builds the standard mcpServers JSON used by Claude, Cursor, TRAE, and Windsurf", () => {
@@ -145,6 +145,20 @@ describe("MCP config templates", () => {
     expect(buildMcpCodexConfig({ command: "node", args: ["C:\\dbx\\mcp\\dist\\index.js"] })).toBe(["[mcp_servers.dbx]", 'command = "node"', 'args = ["C:\\\\dbx\\\\mcp\\\\dist\\\\index.js"]'].join("\n"));
   });
 
+  it("builds the DeepSeek Harness Cordis insert patch", () => {
+    expect(buildMcpDeepSeekHarnessConfig()).toBe(["- insert:", "    - id: mcp-dbx", "      name: '@deepseek-ai/dsh-mcp-client'", "      config:", "        serverName: dbx", "        transport: stdio", '        command: "dbx-mcp-server"'].join("\n"));
+  });
+
+  it("includes launch arguments and explicit environment in the DeepSeek Harness patch", () => {
+    expect(
+      buildMcpDeepSeekHarnessConfig({
+        command: "C:\\Program Files\\nodejs\\node.exe",
+        args: ["C:\\Users\\zhiyo\\AppData\\Roaming\\npm\\node_modules\\@dbx-app\\mcp-server\\dist\\index.js"],
+        env: { DBX_DATA_DIR: "D:\\DBX Data" },
+      }),
+    ).toContain(['        command: "C:\\\\Program Files\\\\nodejs\\\\node.exe"', '        args: ["C:\\\\Users\\\\zhiyo\\\\AppData\\\\Roaming\\\\npm\\\\node_modules\\\\@dbx-app\\\\mcp-server\\\\dist\\\\index.js"]', "        env:", '          "DBX_DATA_DIR": "D:\\\\DBX Data"'].join("\n"));
+  });
+
   it("builds OpenCode config without policy environment", () => {
     const config = JSON.parse(buildMcpOpenCodeConfig());
 

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

@@ -123,7 +123,8 @@ describe("MCP policy settings state", () => {
     expect(tabsSource).toContain("overscroll-x-contain");
     expect(tabsSource).not.toContain("flex-wrap");
     expect(tabsSource).not.toContain("grid-cols-");
-    expect(tabsSource.match(/flex-none shrink-0/g)).toHaveLength(9);
+    expect(tabsSource.match(/flex-none shrink-0/g)).toHaveLength(10);
+    expect(tabsSource).toContain('<TabsTrigger value="deepseek-harness"');
     expect(tabsSource).not.toContain("min-w-0 px-");
   });
 });

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

@@ -24,7 +24,7 @@ function withLaunchConfig(dbx: Record<string, unknown>, config?: McpLaunchConfig
   return dbx;
 }
 
-function tomlStringArray(values: readonly string[]): string {
+function quotedStringArray(values: readonly string[]): string {
   return `[${values.map((value) => JSON.stringify(value)).join(", ")}]`;
 }
 
@@ -74,7 +74,7 @@ export function buildMcpCodexConfig(config?: McpLaunchConfig): string {
   const lines = ["[mcp_servers.dbx]", `command = ${JSON.stringify(launch.command)}`];
 
   if (launch.args && launch.args.length > 0) {
-    lines.push(`args = ${tomlStringArray(launch.args)}`);
+    lines.push(`args = ${quotedStringArray(launch.args)}`);
   }
   if (launch.env && Object.keys(launch.env).length > 0) {
     lines.push("", "[mcp_servers.dbx.env]");
@@ -86,6 +86,23 @@ export function buildMcpCodexConfig(config?: McpLaunchConfig): string {
   return lines.join("\n");
 }
 
+export function buildMcpDeepSeekHarnessConfig(config?: McpLaunchConfig): string {
+  const launch = launchConfig(config);
+  const lines = ["- insert:", "    - id: mcp-dbx", "      name: '@deepseek-ai/dsh-mcp-client'", "      config:", "        serverName: dbx", "        transport: stdio", `        command: ${JSON.stringify(launch.command)}`];
+
+  if (launch.args && launch.args.length > 0) {
+    lines.push(`        args: ${quotedStringArray(launch.args)}`);
+  }
+  if (launch.env && Object.keys(launch.env).length > 0) {
+    lines.push("        env:");
+    for (const [key, value] of Object.entries(launch.env)) {
+      lines.push(`          ${JSON.stringify(key)}: ${JSON.stringify(value)}`);
+    }
+  }
+
+  return lines.join("\n");
+}
+
 export function buildMcpOpenCodeConfig(config?: McpLaunchConfig): string {
   const launch = launchConfig(config);
   const dbx: Record<string, unknown> = {