chore(release): 5.2.1 [skip ci]

## [5.2.1](https://github.com/kaitranntt/ccs/compare/v5.2.0...v5.2.1) (2025-12-01)

### Bug Fixes

* **cliproxy:** improve qwen oauth error handling ([#33](https://github.com/kaitranntt/ccs/issues/33)) ([1c3374f](https://github.com/kaitranntt/ccs/commit/1c3374f6a7e4440e299d49b58808c6454b4547c2)), closes [#29](https://github.com/kaitranntt/ccs/issues/29)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@kaitranntt/ccs",
-  "version": "5.3.0-beta.2",
+  "version": "5.2.1",
   "description": "Claude Code Switch - Instant profile switching between Claude Sonnet 4.5 and GLM 4.6",
   "keywords": [
     "cli",