Update workflow to support manual tag input and improve version extraction

Author: dash14

.github/workflows/update-major-tag.yml

@@ -4,6 +4,13 @@ on:
   release:
     types: [published]
 
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: 'Release tag (e.g. v1.0.0)'
+        required: true
+        type: string
+
 permissions:
   contents: write
 
@@ -13,15 +20,20 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.tag || github.ref }}
+          token: ${{ secrets.GH_PAT_FOR_UPDATE_TAG }}
 
       - name: Extract major version
         id: version
         run: |
-          TAG="${GITHUB_REF_NAME}"            # e.g. v0.0.2
-          MAJOR="${TAG%%.*}"                   # e.g. v0
+          TAG="${{ inputs.tag || github.ref_name }}"  # e.g. v1.0.0
+          MAJOR="${TAG%%.*}"                   # e.g. v1
           echo "major=$MAJOR" >> "$GITHUB_OUTPUT"
 
       - name: Update major version tag
         run: |
-          git tag -fa "${{ steps.version.outputs.major }}" -m "Update ${{ steps.version.outputs.major }} to ${{ github.ref_name }}"
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git tag -fa "${{ steps.version.outputs.major }}" -m "Update ${{ steps.version.outputs.major }} to ${{ inputs.tag || github.ref_name }}"
           git push origin "${{ steps.version.outputs.major }}" --force