Configure uv dependency management

Add uv sync and uv run commands to AGENTS.md for dependency management.
Conditionally install Sphinx versions in pyproject.toml based on Python version.
Generate uv.lock for dependency locking.

Amp-Thread-ID: https://ampcode.com/threads/T-e768c93a-a427-4fcd-ad41-333b48997cca
Co-authored-by: Amp <amp@ampcode.com>

Author: dahlia

AGENTS.md

@@ -1,12 +1,13 @@
 # Wikidata Python Client Library
 
 ## Build/Test Commands
+- `uv sync`: Sync dependencies and create virtual environment
 - `tox`: Run tests across all Python versions (3.8+, PyPy)
 - `tox -e py311`: Run tests on specific Python version
-- `pytest tests/client_test.py::test_client_get -v`: Run single test
-- `mypy -p wikidata`: Type check main package
-- `flake8`: Lint code style
-- `sphinx-build docs/ docs/_build/html`: Build documentation
+- `uv run pytest tests/client_test.py::test_client_get -v`: Run single test
+- `uv run mypy -p wikidata`: Type check main package
+- `uv run flake8`: Lint code style
+- `uv run sphinx-build docs/ docs/_build/html`: Build documentation
 
 ## Architecture
 Python client library for Wikidata API. Core modules:

pyproject.toml

@@ -51,7 +51,8 @@ tests = [
 docs = [
     "furo",
     "rstcheck",
-    "Sphinx ~= 6.1.3"
+    "Sphinx ~= 8.2.3 ; python_version >= '3.11'",
+    "Sphinx ~= 6.1.3 ; python_version < '3.11'"
 ]
 
 [tool.setuptools]