add placeholder acceptance tests workflow

This workflow is set up to run acceptance tests on a schedule and manually.

Author: half-ogre

.github/workflows/acceptance.yaml

@@ -0,0 +1,20 @@
+name: Acceptance Tests                                                                                                                                                        
+                                                                                                                                                                     
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 6 * * *'  # Daily at 6am UTC                                                                                                                                             
+                                                                                                                                                                   
+jobs:                                                                                                                                                              
+  test:                                                                                                                                                            
+    runs-on: ubuntu-latest                                                                                                                                         
+    steps:                                                                                                                                                         
+      - uses: actions/checkout@v4                                                                                                                                  
+                                                                                                                                                                   
+      - name: Set up Python                                                                                                                                        
+        uses: actions/setup-python@v5                                                                                                                              
+        with:                                                                                                                                                      
+          python-version: '3.12'                                                                                                                                   
+                                                                                                                                                                   
+      - name: Placeholder                                                                                                                                          
+        run: echo "Tests workflow placeholder - will be expanded"