chore: bump version to 2.4.2 for npm republish

Version 2.4.1 was already published to npm before the final Windows fix was complete.
Bumping to 2.4.2 to publish the complete fix.

No code changes - identical to v2.4.1 commit 03dd3cf

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "2.4.1",
+  "version": "2.4.2",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",