build(nexus-mcp): refresh dist and test metadata

- Update nexus-mcp/pyproject.toml to register the integration pytest marker and keep test execution policy explicit
- Regenerate package metadata and distribution artifacts in nexus-mcp/src/nexus_mcp.egg-info/* and nexus-mcp/dist/*

Ref: Session Snapshot 2026-04-13 — close out pending pytest validation hygiene

nexus-mcp/pyproject.toml

@@ -41,3 +41,6 @@ where = ["src"]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
+markers = [
+    "integration: marks tests requiring live API credentials (skipped by default)",
+]

nexus-mcp/src/nexus_mcp.egg-info/PKG-INFO

@@ -16,3 +16,7 @@ Requires-Dist: tabulate>=0.9.0
 Requires-Dist: python-dateutil>=2.9.0
 Requires-Dist: aiofiles>=24.1.0
 Requires-Dist: tenacity>=8.2.0
+Provides-Extra: test
+Requires-Dist: pytest>=8.0.0; extra == "test"
+Requires-Dist: pytest-cov>=5.0.0; extra == "test"
+Requires-Dist: pytest-asyncio>=0.24.0; extra == "test"

nexus-mcp/src/nexus_mcp.egg-info/requires.txt

@@ -11,3 +11,8 @@ tabulate>=0.9.0
 python-dateutil>=2.9.0
 aiofiles>=24.1.0
 tenacity>=8.2.0
+
+[test]
+pytest>=8.0.0
+pytest-cov>=5.0.0
+pytest-asyncio>=0.24.0