Clean-up code and upgrade dependencies (#20)

* Update pyproject.toml

* stronger typing

* fix type annotations

* update dependencies

* fix spelling

* add missing info to pyproject.toml

* code cleanup

* add project URLs

* fix mypy issues

* update HA to 2025.11

* upgrade Python to 3.13.2 to match HA

* Update lint.yml

.github/workflows/lint.yml

@@ -18,7 +18,7 @@ jobs:
         - name: "Set up Python"
           uses: actions/setup-python@main
           with:
-            python-version: "3.12"
+            python-version: "3.13.2"
             cache: "pip"
 
         - name: "Install requirements"