fix(gitea): standardize build backend to setuptools

Replace hatchling with setuptools to match all other MCP servers
(contract-validator, viz-platform, data-platform).

Changes:
- build-system: hatchling → setuptools>=61.0
- license: string → PEP 639 format {text = "MIT"}
- Remove redundant License classifier
- Add [tool.setuptools.packages.find] config
- Add [tool.pytest.ini_options] for consistency

Verified: pip install -e . succeeds, 36 tools registered, 64 tests pass.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

mcp-servers/gitea/pyproject.toml

@@ -1,6 +1,6 @@
 [build-system]
-requires = ["hatchling"]
+requires = ["setuptools>=61.0", "wheel"]
-build-backend = "hatchling.build"
+build-backend = "setuptools.build_meta"
 
 [project]
 name = "gitea-mcp-server"
@@ -8,7 +8,7 @@ version = "1.0.0"
 description = "MCP Server for Gitea integration - provides issue, label, wiki, milestone, dependency, and PR tools"
 readme = "README.md"
 requires-python = ">=3.10"
-license = "MIT"
+license = {text = "MIT"}
 authors = [
     { name = "Leo Miranda" }
 ]
@@ -16,7 +16,6 @@ keywords = ["mcp", "gitea", "claude", "tools"]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
-    "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -35,5 +34,10 @@ test = [
     "pytest-asyncio>=0.23.0",
 ]
 
-[tool.hatch.build.targets.wheel]
+[tool.setuptools.packages.find]
-packages = ["mcp_server"]
+where = ["."]
+include = ["mcp_server*"]
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+testpaths = ["tests"]