fix: actually stage the checks/publish split

Same slip as triggershell's equivalent fix: git mv reuses the already-
indexed blob for the source path rather than re-hashing the working
tree, so it silently ignores unstaged edits made before the rename.
The previous commit renamed release.yaml to ci.yml but carried over
the old single-job content underneath it. This is the content that
commit was supposed to carry.

.gitea/workflows/ci.yml

@@ -1,12 +1,12 @@
-name: Release
+name: CI
 
 on:
   push:
-    tags:
-      - "v*.*.*"
+  pull_request:
 
 jobs:
-  release:
+  checks:
+    name: Checks
     runs-on: ubuntu-latest
     steps:
       - uses: https://github.com/actions/checkout@v4
@@ -26,6 +26,21 @@ jobs:
 
       - run: pytest
 
+  publish:
+    name: Publish to PyPI registry
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: checks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: https://github.com/actions/checkout@v4
+
+      - uses: https://github.com/actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install build dependencies
+        run: pip install ".[dev]" build twine
+
       - name: Set package version from the tag
         run: sed -i "s/^__version__ = .*/__version__ = \"${GITHUB_REF_NAME#v}\"/" src/openrgb_hue/__init__.py