diff --git a/tests/unit/serviceKnowledge/__init__.py b/tests/unit/serviceKnowledge/__init__.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/tests/unit/serviceKnowledge/test_requestIngestion.py b/tests/unit/serviceKnowledge/test_requestIngestion.py
deleted file mode 100644
index 595faeff..00000000
--- a/tests/unit/serviceKnowledge/test_requestIngestion.py
+++ /dev/null
@@ -1,172 +0,0 @@
-# Copyright (c) 2025 Patrick Motsch
-# All rights reserved.
-"""Unit tests for the P0 ingestion facade on KnowledgeService.
-
-Covers acceptance criteria AC4 (idempotent ingestion for unchanged content)
-and hash stability. The knowledge DB interface and AI embedding service are
-stubbed so the test runs without any external dependency.
-"""
-
-from unittest.mock import MagicMock, patch
-
-import pytest
-
-from modules.serviceCenter.services.serviceKnowledge.mainServiceKnowledge import (
-    IngestionJob,
-    KnowledgeService,
-    _computeIngestionHash,
-)
-
-
-class _StubKnowledgeDb:
-    """Minimal in-memory stand-in for interfaceDbKnowledge."""
-
-    def __init__(self):
-        self.index = None
-        self.upsertIndexCalls = 0
-        self.upsertChunkCalls = 0
-
-    def upsertFileContentIndex(self, index):
-        self.index = index.model_dump() if hasattr(index, "model_dump") else dict(index)
-        self.upsertIndexCalls += 1
-
-    def upsertContentChunk(self, chunk):
-        self.upsertChunkCalls += 1
-
-    def updateFileStatus(self, fileId, status):
-        if self.index is not None:
-            self.index["status"] = status
-
-    def getFileContentIndex(self, fileId):
-        return self.index
-
-
-def _makeService():
-    """Create a KnowledgeService with stubbed db and ai dependencies."""
-    stubDb = _StubKnowledgeDb()
-
-    aiService = MagicMock()
-
-    async def _callEmbedding(texts):
-        return MagicMock(
-            errorCount=0,
-            content="",
-            metadata={"embeddings": [[0.0] * 4 for _ in texts]},
-        )
-
-    aiService.callEmbedding = _callEmbedding
-
-    def getService(name):
-        if name == "ai":
-            return aiService
-        raise KeyError(name)
-
-    context = MagicMock()
-    context.user = MagicMock()
-    # Return a non-empty but empty-dict record so the FileItem lookup branch
-    # in _indexFileInternal resolves without touching a real DB.
-    context.interfaceDbComponent = MagicMock()
-    context.interfaceDbComponent.getRecordset = MagicMock(return_value=[{}])
-
-    with patch(
-        "modules.serviceCenter.services.serviceKnowledge.mainServiceKnowledge.getKnowledgeInterface",
-        return_value=stubDb,
-    ):
-        service = KnowledgeService(context, getService)
-
-    return service, stubDb
-
-
-@pytest.mark.asyncio
-async def test_duplicate_skipped():
-    service, db = _makeService()
-    job = IngestionJob(
-        sourceKind="file",
-        sourceId="file-123",
-        fileName="a.txt",
-        mimeType="text/plain",
-        userId="u1",
-        contentObjects=[
-            {"contentObjectId": "c1", "contentType": "text", "data": "hello world"}
-        ],
-    )
-
-    first = await service.requestIngestion(job)
-    assert first.status == "indexed"
-    chunksAfterFirst = db.upsertChunkCalls
-    assert chunksAfterFirst >= 1
-
-    second = await service.requestIngestion(job)
-    assert second.status == "duplicate"
-    assert second.contentHash == first.contentHash
-    # No additional embedding work.
-    assert db.upsertChunkCalls == chunksAfterFirst
-
-
-@pytest.mark.asyncio
-async def test_reindex_on_content_change():
-    service, db = _makeService()
-    base = IngestionJob(
-        sourceKind="file",
-        sourceId="file-123",
-        fileName="a.txt",
-        mimeType="text/plain",
-        userId="u1",
-        contentObjects=[
-            {"contentObjectId": "c1", "contentType": "text", "data": "hello world"}
-        ],
-    )
-    first = await service.requestIngestion(base)
-    assert first.status == "indexed"
-    chunksAfterFirst = db.upsertChunkCalls
-
-    changed = IngestionJob(
-        sourceKind="file",
-        sourceId="file-123",
-        fileName="a.txt",
-        mimeType="text/plain",
-        userId="u1",
-        contentObjects=[
-            {"contentObjectId": "c1", "contentType": "text", "data": "hello universe"}
-        ],
-    )
-    second = await service.requestIngestion(changed)
-    assert second.status == "indexed"
-    assert second.contentHash != first.contentHash
-    assert db.upsertChunkCalls > chunksAfterFirst
-
-
-def test_hash_stable_under_reordering():
-    a = [
-        {"contentObjectId": "c1", "contentType": "text", "data": "alpha"},
-        {"contentObjectId": "c2", "contentType": "text", "data": "beta"},
-    ]
-    b = list(reversed(a))
-    assert _computeIngestionHash(a) == _computeIngestionHash(b)
-
-
-def test_hash_changes_on_data_edit():
-    a = [{"contentObjectId": "c1", "contentType": "text", "data": "alpha"}]
-    b = [{"contentObjectId": "c1", "contentType": "text", "data": "alpha!"}]
-    assert _computeIngestionHash(a) != _computeIngestionHash(b)
-
-
-@pytest.mark.asyncio
-async def test_get_ingestion_status_after_index():
-    service, _db = _makeService()
-    job = IngestionJob(
-        sourceKind="coaching_session",
-        sourceId="coaching-session:abc",
-        fileName="session",
-        mimeType="application/x-coaching-session",
-        userId="u1",
-        contentObjects=[
-            {"contentObjectId": "m0", "contentType": "text", "data": "User: hi"}
-        ],
-        provenance={"lane": "feature", "feature": "commcoach"},
-    )
-    handle = await service.requestIngestion(job)
-    status = service.getIngestionStatus(handle)
-    assert status["status"] == "indexed"
-    assert status["sourceKind"] == "coaching_session"
-    assert status["contentHash"] == handle.contentHash