fix: Enable CI workflow to run on tag pushes for PyPI publishing

The PyPI publish workflow was failing because it calls the CI workflow,
but CI only triggered on branch pushes, not tag pushes. This prevented
automatic PyPI publishing when version tags were created.

Changes:
- Add tags: ['v*'] trigger to CI workflow
- Allows PyPI workflow to successfully run CI tests before publishing

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: codebydivine

.github/workflows/ci.yml

@@ -3,6 +3,7 @@ name: CI
 on:
   push:
     branches: [ main, develop ]
+    tags: [ 'v*' ]
   pull_request:
     branches: [ main, develop ]