fix(ci): simplify release workflow to tag-push only

GITHUB_TOKEN-created tags cannot trigger workflows (GitHub security
limitation). Keep it simple: developers push tags manually to release.

Author: everpcpc

.github/workflows/release.yml

@@ -2,54 +2,19 @@ name: Release
 
 on:
   push:
-    branches:
-      - main
-    paths:
-      - 'package.json'
+    tags:
+      - 'v*'
 
 permissions:
   contents: write
 
 jobs:
-  check-version:
-    runs-on: ubuntu-latest
-    outputs:
-      version: ${{ steps.check.outputs.version }}
-      changed: ${{ steps.check.outputs.changed }}
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          fetch-depth: 2
-
-      - name: Check version change
-        id: check
-        run: |
-          CURRENT=$(jq -r .version package.json)
-          PREVIOUS=$(git show HEAD~1:package.json 2>/dev/null | jq -r .version 2>/dev/null || echo "")
-          echo "version=${CURRENT}" >> "$GITHUB_OUTPUT"
-          if [ "$CURRENT" != "$PREVIOUS" ] && [ -n "$CURRENT" ]; then
-            echo "changed=true" >> "$GITHUB_OUTPUT"
-          else
-            echo "changed=false" >> "$GITHUB_OUTPUT"
-          fi
-
-      - name: Create tag
-        if: steps.check.outputs.changed == 'true'
-        run: |
-          git tag "v${{ steps.check.outputs.version }}"
-          git push origin "v${{ steps.check.outputs.version }}"
-
   release:
-    needs: check-version
-    if: needs.check-version.outputs.changed == 'true'
     runs-on: ubuntu-latest
     env:
       GOTOOLCHAIN: auto
-      GITHUB_REF: refs/tags/v${{ needs.check-version.outputs.version }}
     steps:
       - uses: actions/checkout@v6
-        with:
-          ref: v${{ needs.check-version.outputs.version }}
 
       - uses: pnpm/action-setup@v4