chore: replace release-please with tag/workflow_dispatch publishing

.github/workflows/publish.yml

@@ -1,16 +1,24 @@
 name: Publish @openconduit/core
 
 on:
-  release:
-    types: [published]
+  push:
+    tags:
+      - 'v*'
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version to publish (e.g. 1.2.1) — must match package.json'
+        required: true
+        type: string
+
+permissions:
+  contents: write
+  packages: write
 
 jobs:
   publish:
     name: Publish to GitHub Packages
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
 
     steps:
       - uses: actions/checkout@v4
@@ -31,3 +39,9 @@ jobs:
         run: npm publish
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Create GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ github.event_name == 'workflow_dispatch' && format('v{0}', inputs.version) || github.ref_name }}
+          generate_release_notes: true