ci: add main CI workflow

Author: Ichunjo

.github/workflows/build-linux.yml

@@ -1,9 +1,7 @@
 name: Build for Linux
 
 on:
-  push:
-    branches:
-      - master
+  workflow_call:
   pull_request:
   workflow_dispatch:
 

.github/workflows/build-macos.yml

@@ -1,9 +1,7 @@
 name: Build for macOS
 
 on:
-  push:
-    branches:
-      - master
+  workflow_call:
   pull_request:
   workflow_dispatch:
 

.github/workflows/build-windows.yml

@@ -1,9 +1,7 @@
 name: Build for Windows
 
 on:
-  push:
-    branches:
-      - master
+  workflow_call:
   pull_request:
   workflow_dispatch:
 

.github/workflows/ci.yml

@@ -0,0 +1,52 @@
+name: CI and Publish to PyPI
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - 'v*'
+  workflow_dispatch:
+
+jobs:
+  build-windows:
+    uses: ./.github/workflows/build-windows.yml
+
+  build-linux:
+    uses: ./.github/workflows/build-linux.yml
+
+  build-macos:
+    uses: ./.github/workflows/build-macos.yml
+
+  publish:
+    name: Upload to PyPI
+    runs-on: ubuntu-latest
+    needs: [build-windows, build-linux, build-macos]
+    if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v')
+
+    permissions:
+      id-token: write
+      contents: read
+
+    environment:
+      name: pypi
+      url: https://pypi.org/p/vapoursynth-knlmeanscl
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Setup uv
+        uses: astral-sh/setup-uv@v8.0.0
+
+      - name: Build sdist
+        run: uv build --sdist
+
+      - name: Download all artifacts
+        uses: actions/download-artifact@v8
+        with:
+          path: dist
+          merge-multiple: true
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1