feat(upload-release-asset): add composite action to upload release assets

upload-release-asset/action.yml

@@ -0,0 +1,45 @@
+# Copyright 2026 jCloud
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Upload release asset
+description: Uploads a file to a Gitea release
+
+inputs:
+  file:
+    description: File to upload
+    required: true
+  name:
+    description: Release asset name
+    required: false
+
+runs:
+  using: composite
+  steps:
+    - name: Upload release asset
+      shell: bash
+      env:
+        GITEA_TOKEN: ${{ env.GITEA_TOKEN }}
+        FILE: ${{ inputs.file }}
+        NAME: ${{ inputs.name }}
+      run: |
+        if [ -z "$NAME" ]; then
+          NAME="$(basename "$FILE")"
+        fi
+
+        curl --fail \
+          -X POST \
+          -H "Authorization: token $GITEA_TOKEN" \
+          -H "Content-Type: application/octet-stream" \
+          --data-binary "@$FILE" \
+          "${{ gitea.api_url }}/repos/${{ gitea.repository }}/releases/${{ gitea.event.release.id }}/assets?name=$NAME"