refactor: consolidate linting tools into Ruff

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

.github/workflows/tests.yaml

@@ -73,9 +73,9 @@ jobs:
             junit.xml
             coverage.xml
 
-  # ── Flake8 ─────────────────────────────────────────────────────────────
-  flake8:
-    name: Flake8
+  # ── Lint (Ruff) ───────────────────────────────────────────────────────
+  lint:
+    name: Ruff Lint & Format
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
@@ -86,34 +86,14 @@ jobs:
         with:
           python-version: "3.11"
 
-      - name: Install Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install flake8
+      - name: Install Ruff
+        run: pip install ruff
 
-      - name: Run Flake8
-        run: flake8 app/ --max-line-length=120 --extend-ignore=E203,W503
+      - name: Run Ruff Check
+        run: ruff check app/ tests/
 
-  # ── Black ──────────────────────────────────────────────────────────────
-  black:
-    name: Black
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-
-      - name: Install Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install black
-
-      - name: Run Black
-        run: black --check app/ --line-length=120
+      - name: Run Ruff Format
+        run: ruff format --check app/ tests/
 
   # ── Mypy ───────────────────────────────────────────────────────────────
   mypy:
@@ -135,56 +115,3 @@ jobs:
 
       - name: Run Mypy
         run: mypy app/
-
-  # ── Pylint ─────────────────────────────────────────────────────────────
-  pylint:
-    name: Pylint
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-
-      - name: Install Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements-dev.txt
-
-      - name: Run Pylint
-        run: pylint app/
-
-  # ── Bandit ─────────────────────────────────────────────────────────────
-  bandit:
-    name: Bandit
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v4
-
-      - name: Set up Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.11"
-
-      - name: Install Dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install bandit
-
-      - name: Run Bandit - Full Report
-        if: ${{ !cancelled() }}
-        run: bandit -r app/ -f json -o bandit-report.json || true
-
-      - name: Run Bandit - Fail on High/Medium
-        run: bandit -r app/ -ll
-
-      - name: Upload Bandit Report
-        if: ${{ !cancelled() }}
-        uses: actions/upload-artifact@v4
-        with:
-          name: bandit-report
-          path: bandit-report.json