fix(ci): resolve test collection and async failures

- Add conftest.py to inject lib/ onto sys.path, fixing
  ModuleNotFoundError on identity test collection
- Add pytest-asyncio to CI install step and pyproject.toml
  test extras; set asyncio_mode=auto to resolve 31 async
  test failures flagged in session tech debt backlog
- All 35 tests now pass; 8 skipped (live API, expected)

Ref: Session Snapshot 2026-04-13 — "Pytest validation incomplete"

.github/workflows/nexus-mcp-ci.yml

@@ -37,7 +37,7 @@ jobs:
       run: |
         python -m pip install --upgrade pip
         pip install -e .
-        pip install pytest pytest-cov black ruff
+        pip install pytest pytest-cov pytest-asyncio black ruff
     
     - name: Lint with ruff
       working-directory: nexus-mcp

nexus-mcp/conftest.py

@@ -0,0 +1,9 @@
+"""
+Root conftest.py — adds lib/ to sys.path so legacy identity tests can import
+adapters directly (e.g. `from ad_adapter import ...`) without package prefix.
+"""
+import sys
+from pathlib import Path
+
+# Allow bare imports like `from ad_adapter import ...` used by identity_tests/
+sys.path.insert(0, str(Path(__file__).parent / "lib"))

nexus-mcp/pyproject.toml

@@ -26,8 +26,18 @@ dependencies = [
 [project.scripts]
 nexus-mcp = "main:main"
 
+[project.optional-dependencies]
+test = [
+    "pytest>=8.0.0",
+    "pytest-cov>=5.0.0",
+    "pytest-asyncio>=0.24.0",
+]
+
 [tool.setuptools.packages.find]
 where = ["src"]
 
 [tool.setuptools.package-dir]
 "" = "src"
+
+[tool.pytest.ini_options]
+asyncio_mode = "auto"

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

@@ -9,6 +9,7 @@ src/nexus_mcp.egg-info/top_level.txt
 src/shards/__init__.py
 src/shards/assets.py
 src/shards/audit.py
+src/shards/audit_minimal.py
 src/shards/identity.py
 src/shards/itsm.py
 src/shards/logistics.py