support solo repos with semantic release

actions/release/action.yml

@@ -1,5 +1,5 @@
 name: Semantic Release
-description: Run multi-semantic-release for per-package versioning
+description: Run semantic-release (multi for monorepos, standard for solo packages)
 
 inputs:
   gitea-token:
@@ -39,4 +39,9 @@ runs:
         GITEA_TOKEN: ${{ inputs.gitea-token }}
         GITEA_URL: ${{ inputs.gitea-url }}
         NPM_TOKEN: ${{ inputs.npm-token }}
-      run: bunx multi-semantic-release
+      run: |
+        if node -e "const p=require('./package.json'); process.exit(p.workspaces ? 0 : 1)"; then
+          bunx multi-semantic-release
+        else
+          bunx semantic-release
+        fi