ci: add test pipeline, PyPI release workflow, and lint fixes

- Update Woodpecker to run unit and integration tests in parallel
- Add GitHub Actions workflow for PyPI trusted publishing on main
- Add license, classifiers, keywords, and URLs to pyproject.toml
- Fix ruff lint errors (unused imports, duplicate class name) and formatting

pyproject.toml

@@ -3,11 +3,24 @@ name = "wrenn"
 version = "0.1.0"
 description = "Python SDK for Wrenn"
 readme = "README.md"
+license = "MIT"
+license-files = ["LICENSE"]
 authors = [
     { name = "Rafeed M. Bhuiyan", email = "rafeed@omukk.dev" },
     { name = "Tasnim Kabir Sadik", email = "tksadik@omukk.dev" },
 ]
 requires-python = ">=3.13"
+keywords = ["wrenn"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.13",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Typing :: Typed",
+]
 dependencies = [
     "email-validator>=2.3.0",
     "httpx>=0.28.1",
@@ -29,6 +42,10 @@ dev = [
     "ruff>=0.15.10",
 ]
 
+[project.urls]
+Homepage = "https://wrenn.dev"
+Repository = "https://github.com/wrennhq/python-sdk"
+
 [tool.pytest.ini_options]
 markers = [
     "integration: integration tests (require live server)",