Fix xcodemake argument corruption from overly broad string replacement (#178)

The executeXcodemakeCommand function was using .replace() to remove project
directory paths from arguments, which would corrupt any argument containing
the project directory path as a substring (not just as a prefix).

Changed to use .startsWith() and .substring() to only remove the project
directory when it appears as a path prefix, matching the approach already
used in doesMakeLogFileExist.

Fixes XCODEBUILD-MCP-12S9

Co-authored-by: Cursor Agent <cursoragent@cursor.com>

Author: cursor[bot]

CHANGELOG.md

@@ -14,6 +14,7 @@
 ### Fixed
 - Update UI automation guard guidance to point at `debug_continue` when paused.
 - Fix tool loading bugs in static tool registration.
+- Fix xcodemake command argument corruption when project directory path appears as substring in non-path arguments.
 
 ## [1.16.0] - 2025-12-30
 - Remove dynamic tool discovery (`discover_tools`) and `XCODEBUILDMCP_DYNAMIC_TOOLS`. Use `XCODEBUILDMCP_ENABLED_WORKFLOWS` to limit startup tool registration.

src/utils/xcodemake.ts

@@ -210,8 +210,14 @@ export async function executeXcodemakeCommand(
 
   const xcodemakeCommand = [getXcodemakeCommand(), ...buildArgs];
 
-  // Remove projectDir from arguments
-  const command = xcodemakeCommand.map((arg) => arg.replace(projectDir + '/', ''));
+  // Remove projectDir from arguments if present at the start
+  const prefix = projectDir + '/';
+  const command = xcodemakeCommand.map((arg) => {
+    if (arg.startsWith(prefix)) {
+      return arg.substring(prefix.length);
+    }
+    return arg;
+  });
 
   return getDefaultCommandExecutor()(command, logPrefix);
 }