mcp supports cwd config and defaults to workspace cwd (#2171)

* mcp supports cwd config and defaults to workspace cwd

* clean up

* Update src/services/mcp/McpHub.ts

Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>

---------

Co-authored-by: ellipsis-dev[bot] <65095814+ellipsis-dev[bot]@users.noreply.github.com>

src/services/mcp/McpHub.ts

@@ -63,6 +63,7 @@ const createServerTypeSchema = () => {
 			type: z.enum(["stdio"]).optional(),
 			command: z.string().min(1, "Command cannot be empty"),
 			args: z.array(z.string()).optional(),
+			cwd: z.string().default(() => vscode.workspace.workspaceFolders?.at(0)?.uri.fsPath ?? process.cwd()),
 			env: z.record(z.string()).optional(),
 			// Ensure no SSE fields are present
 			url: z.undefined().optional(),
@@ -314,7 +315,7 @@ export class McpHub {
 				mcpSettingsFilePath,
 				`{
   "mcpServers": {
-    
+
   }
 }`,
 			)
@@ -427,6 +428,7 @@ export class McpHub {
 				transport = new StdioClientTransport({
 					command: config.command,
 					args: config.args,
+					cwd: config.cwd,
 					env: {
 						...config.env,
 						...(process.env.PATH ? { PATH: process.env.PATH } : {}),