Add Python 3.14 support

- Add py314 to tox env_list
- Add Python 3.14 to GitHub Actions test matrix
- Add Python 3.14 to tox gh-actions mapping

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

Co-Authored-By: Claude <noreply@anthropic.com>

Author: argonism

.github/workflows/test_for_pr.yml

@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
 
     steps:
       - name: Checkout code

tox.ini

@@ -2,7 +2,7 @@
 requires =
   tox>=4
   tox-uv>=1
-env_list = lint, type, py{39,310,311,312,313}, styled_text, doctest
+env_list = lint, type, py{39,310,311,312,313,314}, styled_text, doctest
 skip_missing_interpreters = true
 
 [gh-actions]
@@ -12,6 +12,7 @@ python =
     3.11: py311, styled-text
     3.12: py312, styled-text
     3.13: py313, styled_text, lint, type
+    3.14: py314, styled_text
 
 [testenv]
 runner = uv-venv-lock-runner