diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 337bcf8..533c06a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,16 +9,12 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ["3.11", "3.12"]
-
     steps:
       - uses: actions/checkout@v4
 
       - uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "3.12"
           cache: pip
 
       - name: Install dependencies
diff --git a/.github/workflows/deploy_hf_space.yml b/.github/workflows/deploy_hf_space.yml
index f0795ec..8baea46 100644
--- a/.github/workflows/deploy_hf_space.yml
+++ b/.github/workflows/deploy_hf_space.yml
@@ -8,16 +8,13 @@ jobs:
   # ── Gate: all tests must pass before deploy ──────────────────────────────
   test:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ["3.11", "3.12"]
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python ${{ matrix.python-version }}
+      - name: Set up Python 3.12
         uses: actions/setup-python@v5
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: "3.12"
           cache: pip
 
       - name: Install test dependencies
diff --git a/.gitignore b/.gitignore
index d3694fe..0881d4b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -155,3 +155,7 @@ models/
 
 # Runtime data (never committed)
 src/data/
+
+# code-review-graph local graph
+*.crg.db
+.code-review-graph/
diff --git a/pyproject.toml b/pyproject.toml
index 53be975..fb80e8b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [tool.ruff]
-target-version = "py311"
+target-version = "py312"
 line-length = 120
 exclude = ["venv", ".venv", "core", "scripts"]
 
diff --git a/requirements-dev.txt b/requirements-dev.txt
index b573053..86eaa67 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,2 +1,3 @@
 black>=24.0.0
 huggingface_hub
+code-review-graph==2.2.1
diff --git a/tests/integration/test_ocr.py b/tests/integration/test_ocr.py
index 261a3ce..a8f29fd 100644
--- a/tests/integration/test_ocr.py
+++ b/tests/integration/test_ocr.py
@@ -38,8 +38,9 @@ def test_paddle_engine_mocked_predict():
 
 def test_easyocr_factory_dynamic_loading():
     with patch("src.providers.easyocr_provider.EasyOCREngine") as mock_easy:
-        # Reset registry so easyocr is not cached from a previous test
+        # Reset registry and instance cache so easyocr is not cached from a previous test
         OCRFactory._engines.pop("easyocr", None)
+        OCRFactory._instances.pop("easyocr", None)
         OCRFactory.get_engine("easyocr")
         mock_easy.assert_called_once()