fix: align README badges with best practices

- License: use standard MIT yellow badge, link to opensource.org
- Python: update to 3.14 to match pyproject.toml
- uv: use official dynamic endpoint badge from astral-sh/uv
- Tests: replace static pytest 95% with GitHub Actions badge
- Ty: fix link to PyPI (pypi.org/project/ty/)
- Add .github/workflows/tests.yml for CI

Co-authored-by: Ali Khokhar <alishahryar2@gmail.com>

.github/workflows/tests.yml

@@ -0,0 +1,27 @@
+name: Tests
+
+on:
+  push:
+    branches: [main, master, cursor/readme-badges-best-practices-2d69]
+  pull_request:
+    branches: [main, master, cursor/readme-badges-best-practices-2d69]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@v4
+        with:
+          version: "latest"
+
+      - name: Set up Python
+        run: uv python install 3.14
+
+      - name: Install dependencies
+        run: uv sync --all-extras --dev
+
+      - name: Run tests
+        run: uv run pytest -v --tb=short