CI: fix conftest src import (sys.path) + run via python -m pytest

Bare `pytest` (as CI invoked it) doesn't add the repo root to sys.path, so
conftest's `from src.governance import ...` failed with ModuleNotFoundError at
collection. Make conftest add the repo root itself and run CI via `python -m pytest`.

Author: shadowhunter-92

.github/workflows/ci.yml

@@ -24,5 +24,5 @@ jobs:
           python -m pip install --upgrade pip
           pip install -r requirements.txt
       - name: Run tests
-        run: pytest tests/ -q
+        run: python -m pytest tests/ -q
         # Postgres integration tests skip automatically unless AGENTBRIDGE_TEST_PG is set.

tests/conftest.py

@@ -6,8 +6,15 @@
 how the existing self-contained tests run.
 """
 
+import os
+import sys
+
 import pytest
 
+# Make `src` importable however pytest is invoked — bare `pytest` (as CI runs it) does not put
+# the repo root on sys.path the way `python -m pytest` does.
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
 from src.governance import (
     make_store,
     AgentIdentity,