feat(deploy): add vocab course change detection and sync step

- Implemented a new workflow step to detect changes in vocab course files and conditionally sync content.
- Added a script to check for specific changes in the repository and trigger the sync process if necessary.
- Introduced a new npm script for syncing vocab course content in the backend package.json.

.gitea/workflows/deploy.yml

@@ -10,6 +10,33 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Detect vocab course changes
+        id: vocab_course_changes
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          BASE="${{ gitea.event.before }}"
+          HEAD="${{ gitea.sha }}"
+
+          if [ -z "$BASE" ] || [[ "$BASE" =~ ^0+$ ]] || ! git cat-file -e "$BASE^{commit}" 2>/dev/null; then
+            BASE="HEAD~1"
+          fi
+
+          git diff --name-only "$BASE" "$HEAD" > changed-files.txt
+          cat changed-files.txt
+
+          if grep -E '^(backend/scripts/.*(bisaya|course|didactics|vocab)|backend/sql/.*vocab|backend/migrations/.*vocab|docs/.*(COURSE|VOCAB|BISAYA|GERMAN_FOR_BISAYA))' changed-files.txt; then
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+          fi
+
       - name: Prepare SSH
         run: |
           mkdir -p ~/.ssh
@@ -31,4 +58,12 @@ jobs:
           ssh -i ~/.ssh/id_ed25519 \
             -p "${{ secrets.PROD_PORT }}" \
             "${{ secrets.PROD_USER }}@${{ secrets.PROD_HOST }}" \
-            "/home/tsschulz/deploy-yourpart-bluegreen.sh"
+            "/home/tsschulz/deploy-yourpart-bluegreen.sh"
+
+      - name: Sync vocab course content
+        if: steps.vocab_course_changes.outputs.changed == 'true'
+        run: |
+          ssh -i ~/.ssh/id_ed25519 \
+            -p "${{ secrets.PROD_PORT }}" \
+            "${{ secrets.PROD_USER }}@${{ secrets.PROD_HOST }}" \
+            "cd /opt/yourpart && npm --prefix backend run sync:vocab-courses"