diff --git a/.github/workflows/auto_merge_renovate_prs.yml b/.github/workflows/auto_merge_renovate_prs.yml
index 301e041c5..f86a885ae 100644
--- a/.github/workflows/auto_merge_renovate_prs.yml
+++ b/.github/workflows/auto_merge_renovate_prs.yml
@@ -1,4 +1,4 @@
-name: Renovate Auto-merge (patch/minor only)
+name: Renovate Auto-Merge
 
 on:
   workflow_dispatch:
@@ -8,7 +8,7 @@ on:
         required: false
         default: '5'
   schedule:
-    - cron: "*/10 * * * *"
+    - cron: "*/10 * * * *"   # 每10分钟跑一次（按需调整）
   pull_request:
     types: [ready_for_review]
 
@@ -23,79 +23,106 @@ env:
 jobs:
   automerge:
     runs-on: ubuntu-latest
-
     steps:
       - name: Checkout (optional)
         uses: actions/checkout@v4
 
-      - name: Optional delay
-        run: |
-          delay_input="${{ github.event.inputs.delay_minutes }}"
-          delay="${delay_input:-5}"
-          echo "Delaying for ${delay} minute(s)..."
-          sleep $((delay * 60))
-
-      - name: Debug list all PRs
-        run: |
-          echo "All open PRs (number / title / author):"
-          gh pr list --repo "$REPO" --state open --json number,title,author \
-            --jq '.[] | {number,title,author:.author.login}' || true
+      - name: Optional delay (let CI start)
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Find Renovate PR numbers
-        id: find_prs
+          DELAY: ${{ github.event.inputs.delay_minutes }}
         run: |
-          prs=$(gh pr list --repo "$REPO" --state open --json number,title,author \
-            --jq '.[] | select(.author.login | test("renovate"; "i")) | .number' ) || true
-          echo "Found PR numbers: $prs"
-          echo "prs=$prs" >> $GITHUB_OUTPUT
+          delay="${DELAY:-5}"
+          echo "Delaying for ${delay} minute(s) to let other workflows start..."
+          sleep $(( delay * 60 ))
+
+      - name: Process Renovate PRs (patch/minor -> merge when checks OK)
         env:
+          REPO: ${{ env.REPO }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Process Renovate PRs (patch/minor only)
-        if: steps.find_prs.outputs.prs != ''
         run: |
+          set -euo pipefail
+
           owner_repo="$REPO"
-          owner=$(echo "$owner_repo" | cut -d'/' -f1)
-          repo=$(echo "$owner_repo" | cut -d'/' -f2)
+          owner="${owner_repo%%/*}"
+          repo="${owner_repo##*/}"
 
-          prs="${{ steps.find_prs.outputs.prs }}"
-          for pr in $prs; do
+          echo "Listing open PRs authored by renovate-like bots..."
+          # Read PR numbers into bash array (one per line)
+          mapfile -t prs < <(gh pr list --repo "$owner_repo" --state open --json number,title,author --jq '.[] | select(.author.login | test("renovate"; "i")) | .number' 2>/dev/null || true)
+
+          if [ "${#prs[@]}" -eq 0 ]; then
+            echo "No renovate PRs found. Exiting."
+            exit 0
+          fi
+
+          echo "Found ${#prs[@]} renovate PR(s): ${prs[*]}"
+
+          for pr in "${prs[@]}"; do
+            echo
             echo "=== Processing PR #$pr ==="
 
-            body=$(gh pr view "$pr" --repo "$owner_repo" --json body --jq .body)
+            # Get PR body
+            body=$(gh pr view "$pr" --repo "$owner_repo" --json body --jq .body 2>/dev/null || echo "")
+            echo "PR #$pr body (first 20 lines):"
+            echo "$body" | sed -n '1,20p' || true
 
-            update_type=$(echo "$body" | awk -F'|' '/\|/ { gsub(/ /,"",$3); if ($3 ~ /(major|minor|patch)/) {print $3; exit} }')
+            # Try to extract update type from the Markdown table's Update column.
+            # This regex looks for lines like: | package/name | minor | v1.2.3 -> v1.2.4 |
+            update_type=$(echo "$body" | grep -m1 -Po '\|\s*[^|]+\s*\|\s*\K(major|minor|patch)(?=\s*\|)' || true)
             update_type=${update_type:-unknown}
-            echo "PR #$pr update_type=$update_type"
+            echo "Detected update_type='$update_type'"
 
             if [[ "$update_type" != "patch" && "$update_type" != "minor" ]]; then
-              echo "Skipping PR #$pr (not patch/minor)"
+              echo "Skip PR #$pr (not patch/minor)."
               continue
             fi
 
+            # Get head commit SHA
             sha=$(gh pr view "$pr" --repo "$owner_repo" --json headRefOid --jq .headRefOid 2>/dev/null || true)
             if [[ -z "$sha" ]]; then
-              sha=$(gh api repos/$owner/$repo/pulls/$pr --jq .head.sha)
+              sha=$(gh api repos/"$owner"/"$repo"/pulls/"$pr" --jq .head.sha 2>/dev/null || true)
+            fi
+            echo "PR #$pr head SHA: ${sha:-<unknown>}"
+            if [[ -z "$sha" ]]; then
+              echo "Cannot determine head SHA for PR #$pr; skipping."
+              continue
             fi
-            echo "PR #$pr head SHA: $sha"
 
-            combined_state=$(gh api repos/$owner/$repo/commits/$sha/status --jq .state)
-            echo "Combined status: $combined_state"
+            # Check combined status (legacy statuses)
+            combined_state=$(gh api repos/"$owner"/"$repo"/commits/"$sha"/status --jq .state 2>/dev/null || echo "unknown")
+            echo "Combined status for $sha: $combined_state"
 
-            inprogress=$(gh api repos/$owner/$repo/commits/$sha/check-runs \
-              --jq '.check_runs[] | select(.status == "in_progress" or .conclusion == null) | .name' | wc -l || true)
-            echo "In-progress checks: $inprogress"
+            # Count in-progress or non-concluded check-runs
+            inprogress_count=$(gh api repos/"$owner"/"$repo"/commits/"$sha"/check-runs --jq '.check_runs[] | select(.status == "in_progress" or .conclusion == null) | .name' 2>/dev/null | wc -l || echo 0)
+            inprogress_count=$(echo "$inprogress_count" | tr -d '[:space:]')
+            inprogress_count=${inprogress_count:-0}
+            echo "In-progress / pending check-runs: $inprogress_count"
 
-            if [[ "$combined_state" == "success" && "$inprogress" -eq 0 ]]; then
-              echo "Merging PR #$pr ..."
-              gh pr merge "$pr" --repo "$owner_repo" --squash --delete-branch --confirm || {
-                echo "Merge failed for PR #$pr"
-              }
+            # If combined status already success and no in-progress -> merge now
+            if [[ "$combined_state" == "success" && "$inprogress_count" -eq 0 ]]; then
+              echo "Checks already green for PR #$pr; attempting immediate merge..."
+              if gh pr merge "$pr" --repo "$owner_repo" --squash --delete-branch --yes; then
+                echo "PR #$pr merged successfully."
+              else
+                echo "Immediate merge command failed for PR #$pr; attempting to enable auto-merge..."
+                gh pr merge "$pr" --repo "$owner_repo" --squash --auto --delete-branch || echo "Enable auto-merge failed for PR #$pr."
+              fi
             else
-              echo "Checks not green for PR #$pr, skipping."
+              # Not all checks green: enable platform auto-merge so GitHub will merge when checks pass
+              echo "Not all checks green for PR #$pr (state=$combined_state, inprogress=$inprogress_count)."
+              echo "Attempting to enable platform auto-merge for PR #$pr (GitHub will merge when required checks pass)."
+              if gh pr merge "$pr" --repo "$owner_repo" --squash --auto --delete-branch; then
+                echo "Auto-merge enabled for PR #$pr."
+              else
+                echo "Failed to enable auto-merge for PR #$pr. Possible reasons: branch protection requires reviews or token lacks permission."
+                # Optional: print protection info for debugging
+                protection=$(gh api repos/"$owner"/"$repo"/branches/"$(gh pr view "$pr" --repo "$owner_repo" --json headRefName --jq .headRefName)" --jq '.protection' 2>/dev/null || echo "")
+                echo "Branch protection info: $protection"
+              fi
             fi
+
+            # small delay to avoid rate limits
+            sleep 1
           done
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+          echo "All done."