Add workflow to sync with upstream repository

.github/workflows/sync-upstream.yml

@@ -0,0 +1,34 @@
+name: Sync with Upstream
+
+on:
+  schedule:
+    - cron: '0 0 * * *'  # Run daily at midnight
+  workflow_dispatch:  # Allow manual triggering
+
+jobs:
+  sync:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          
+      - name: Configure Git
+        run: |
+          git config user.name github-actions
+          git config user.email github-actions@github.com
+          
+      - name: Add Upstream Remote
+        run: git remote add upstream https://github.com/imputnet/cobalt.git
+        
+      - name: Fetch from Upstream
+        run: git fetch upstream
+        
+      - name: Merge Upstream Changes
+        run: |
+          git checkout main
+          git merge upstream/main --no-edit
+          
+      - name: Push Changes
+        run: git push origin main