Fix GitHub Actions workflows to handle SSH private repository access

- Add SSH key setup step to all workflows
- Configure Docker build to forward SSH agent
- Required for accessing private paladin repository dependency

.github/workflows/code-quality.yml

@@ -16,6 +16,11 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
 
+    - name: Set up SSH key for private repos
+      uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+
     - name: Set up Python
       uses: actions/setup-python@v5
       with:
@@ -53,6 +58,11 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
 
+    - name: Set up SSH key for private repos
+      uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+
     - name: Set up Python
       uses: actions/setup-python@v5
       with:

.github/workflows/docker.yml

@@ -25,6 +25,11 @@ jobs:
     - name: Checkout code
       uses: actions/checkout@v4
 
+    - name: Set up SSH key for private repos
+      uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
 
@@ -55,6 +60,7 @@ jobs:
         push: ${{ github.event_name != 'pull_request' }}
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}
+        ssh: default
         cache-from: type=gha
         cache-to: type=gha,mode=max
         secret-files: |

.github/workflows/tests.yml

@@ -22,6 +22,11 @@ jobs:
       with:
         fetch-depth: 0  # Full history for better coverage reports
 
+    - name: Set up SSH key for private repos
+      uses: webfactory/ssh-agent@v0.9.0
+      with:
+        ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
+
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v5
       with: