Fix JOC detection inside mp4/mkv containers

.github/workflows/build.yml

@@ -1,12 +1,14 @@
 name: build
 
-# Builds both architectures and publishes the two installable component packages.
+# Builds both architectures, publishes the two installable component packages as
+# workflow artifacts, and — when a tag is pushed — turns them into a GitHub release.
 # The SDK is fetched from foobar2000.org at build time (tools/setup_sdk.ps1) and the
 # renderer sources are part of this repository (kernel/), so nothing else is needed.
 
 on:
   push:
     branches: [ main, master ]
+    tags: [ 'v*' ]
   pull_request:
   workflow_dispatch:
 
@@ -20,6 +22,16 @@ jobs:
         shell: pwsh
         run: ./tools/setup_sdk.ps1 -TargetVersion 80
 
+      - name: Check the tag against the component version
+        if: startsWith(github.ref, 'refs/tags/')
+        shell: pwsh
+        run: |
+          $declared = (Select-String -Path src/main.cpp -Pattern '#define JOC_VERSION "([^"]+)"').Matches[0].Groups[1].Value
+          $tag = '${{ github.ref_name }}'
+          if ($tag -ne "v$declared") {
+            throw "the tag $tag does not match JOC_VERSION $declared; the release would be mislabelled"
+          }
+
       - name: Build both architectures and package them
         shell: pwsh
         run: ./tools/package.ps1
@@ -41,3 +53,28 @@ jobs:
           name: foo_input_joc-x64
           path: dist/*-x64.fb2k-component
           if-no-files-found: error
+
+  release:
+    # A pushed tag is what makes a release; branch builds only leave artifacts.
+    if: startsWith(github.ref, 'refs/tags/')
+    needs: windows
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Collect the packaged components
+        uses: actions/download-artifact@v4
+        with:
+          path: dist
+          merge-multiple: true
+
+      - name: List what will be published
+        run: ls -l dist
+
+      - name: Create the release for this tag
+        uses: softprops/action-gh-release@v2
+        with:
+          name: ${{ github.ref_name }}
+          files: dist/*.fb2k-component
+          fail_on_unmatched_files: true
+          generate_release_notes: true