chore(ci): allow manual npm publish by tag

Author: adamchal

.github/workflows/npm-publish.yml

@@ -3,6 +3,12 @@ name: Publish to npm
 on:
   release:
     types: [published]
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: Release tag to publish
+        required: true
+        default: v0.3.0
 
 permissions:
   contents: read
@@ -17,6 +23,8 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
+        with:
+          ref: ${{ inputs.tag || github.ref_name }}
 
       - name: Set up Deno
         uses: denoland/setup-deno@v2
@@ -32,9 +40,11 @@ jobs:
 
       - name: Verify release tag matches deno.json
         shell: bash
+        env:
+          RELEASE_TAG: ${{ inputs.tag || github.ref_name }}
         run: |
           VERSION="$(node -p "require('./deno.json').version")"
-          test "${GITHUB_REF_NAME}" = "v${VERSION}"
+          test "${RELEASE_TAG}" = "v${VERSION}"
 
       - name: Pack release tarball
         run: deno task pack:release