Pg 4 (#2390)

* feat: postgres tests

* feat: mongo cutoff

* feat: mongo cutoff

* feat: adjust docs and compose files

* fix: mini code mongo removals

* fix: tests and k8s mongo stuff

* feat: test fixes

* fix: ruff

* fix: vale

* Potential fix for pull request finding 'CodeQL / Clear-text logging of sensitive information'

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* fix: mini suggestions

* vale lint fix 2

* fix: codeql columns thing

* fix: test mongo

* fix: tests coverage

* feat: better tests 4

* feat: more tests

* feat: decent coverage

* fix: ruff fixes

* fix: remove mongo mock

* feat: enhance workflow engine and API routes; add document retrieval and source handling

* feat: e2e tests

* fix: mcp, mongo and more

* fix: mini codeql warning

* fix: agent chunk view

* fix: mini issues

* fix: more pg fixes

* feat: postgres prep on start

* feat: qa tests

* fix: mini improvements

* fix: tests

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Co-authored-by: Siddhant Rai <siddhant.rai.5686@gmail.com>

tests/api/conftest.py

@@ -1,7 +1,8 @@
 """API-specific test fixtures."""
 
+import uuid
+
 import pytest
-from bson import ObjectId
 
 
 @pytest.fixture
@@ -27,7 +28,7 @@ def mock_request_token(monkeypatch, decoded_token):
 @pytest.fixture
 def sample_conversation():
     return {
-        "_id": ObjectId(),
+        "_id": uuid.uuid4().hex[:24],
         "user": "test_user",
         "name": "Test Conversation",
         "queries": [
@@ -43,7 +44,7 @@ def sample_conversation():
 @pytest.fixture
 def sample_prompt():
     return {
-        "_id": ObjectId(),
+        "_id": uuid.uuid4().hex[:24],
         "user": "test_user",
         "name": "Helpful Assistant",
         "content": "You are a helpful assistant that provides clear and concise answers.",
@@ -54,7 +55,7 @@ def sample_prompt():
 @pytest.fixture
 def sample_agent():
     return {
-        "_id": ObjectId(),
+        "_id": uuid.uuid4().hex[:24],
         "user": "test_user",
         "name": "Test Agent",
         "type": "classic",
@@ -86,3 +87,20 @@ def flask_app():
 
     app = Flask(__name__)
     return app
+
+
+@pytest.fixture
+def mock_mongo_db():
+    """Compatibility shim for tests written against the old mongomock fixture.
+
+    The canonical ``mock_mongo_db`` fixture was removed when the answer pipeline
+    moved from Mongo to Postgres (see tests/conftest.py docstring). Most API
+    tests that still request it only do so as a historical gate: they patch
+    specific mongo collections (``agents_collection``, etc.) via
+    ``unittest.mock.patch`` inside the test body and never touch the fixture's
+    return value. Yielding ``None`` keeps those tests runnable without
+    reintroducing mongomock. Tests that actually need a working Mongo client
+    (e.g. ones that call ``MongoDB.get_client()``) will still fail; skip or
+    rewrite those per-case rather than reviving a global fake.
+    """
+    yield None