fix(ci): stop release-please auto-merge loop

Enable native auto-merge and stop, instead of waiting 60s then deleting the
release branch and self-dispatching, which destroyed the release PR before its
required checks finished and looped forever.

Author: Endika

.github/workflows/release-please.yml

@@ -25,30 +25,15 @@ jobs:
           config-file: release-please-config.json
           manifest-file: .release-please-manifest.json
 
+      # Enable native auto-merge and stop; GitHub rebase-merges once the required
+      # checks pass, and that PAT-authored merge re-triggers this workflow to cut
+      # the tag/release.
       - if: ${{ steps.release.outputs.pr }}
         env:
           GH_TOKEN: ${{ secrets.RELEASE_PLEASE_TOKEN }}
           REPO: ${{ github.repository }}
-          WORKFLOW: ${{ github.workflow }}
           PR_JSON: ${{ steps.release.outputs.pr }}
-        run: |
-          PR=$(echo "$PR_JSON" | jq -r .number)
-          BRANCH=$(echo "$PR_JSON" | jq -r .headBranchName)
-          # Rebase-merge works when main has advanced past the release branch's
-          # base. When the release commit already sits directly on main HEAD,
-          # GitHub refuses ("This branch can't be rebased") on a rebase-only
-          # repo — fast-forward main to the release commit via the API instead.
-          gh pr merge --rebase --auto -R "$REPO" "$PR" \
-            || gh pr merge --rebase -R "$REPO" "$PR" \
-            || gh api -X PATCH "repos/$REPO/git/refs/heads/main" \
-                 -f sha="$(gh api "repos/$REPO/git/refs/heads/$BRANCH" --jq .object.sha)"
-          for _ in $(seq 1 30); do
-            STATE=$(gh pr view "$PR" -R "$REPO" --json state --jq .state)
-            [ "$STATE" = "MERGED" ] && break
-            sleep 2
-          done
-          gh api -X DELETE "repos/$REPO/git/refs/heads/$BRANCH" 2>/dev/null || true
-          gh workflow run "$WORKFLOW" -R "$REPO" --ref main
+        run: gh pr merge --rebase --auto -R "$REPO" "$(echo "$PR_JSON" | jq -r .number)"
 
       # When a release is actually published, redeploy from main so the live
       # build carries the bumped version. release-please's own version-bump