ci: restructure pipeline - test only for test tags, build only for dev/beta, build+docs for release

.gitea/workflows/docs_call.yaml

@@ -21,6 +21,17 @@ jobs:
         with:
           node-version: '24'
 
+      - name: Hash package-lock
+        id: hash-npm
+        run: echo "hash=$(sha256sum apps/docs/package-lock.json 2>/dev/null || echo 'none') | cut -d' ' -f1)" >> "$GITHUB_OUTPUT"
+
+      - uses: actions/cache@v3
+        with:
+          path: |
+            ~/.npm
+          key: npm-docs-${{ steps.hash-npm.outputs.hash }}
+          restore-keys: npm-docs-
+
       - name: Install
         working-directory: apps/docs
         run: npm ci || npm install