diff --git a/.github/workflows/code-review.yml b/.github/workflows/code-review.yml
index d1d50e7..872b5ec 100644
--- a/.github/workflows/code-review.yml
+++ b/.github/workflows/code-review.yml
@@ -1,7 +1,13 @@
 name: "Claude Code Review"
+
 on:
   pull_request:
     types: [ opened, reopened, synchronize ]
+
+concurrency:
+  group: claude-review-${{ github.event.pull_request.number }}
+  cancel-in-progress: true
+
 jobs:
   review:
     runs-on: ubuntu-latest
@@ -48,6 +54,9 @@ jobs:
                           author {
                             login
                           }
+                          reactions {
+                            totalCount
+                          }
                         }
                       }
                     }
@@ -55,7 +64,7 @@ jobs:
                 }
               }
             }' \
-            --jq '.data.repository.pullRequest.reviewThreads.nodes[] | select(.isResolved == false) | select([.comments.nodes[].author.login] | all(. == "github-actions")) | .comments.nodes[].databaseId' \
+            --jq '.data.repository.pullRequest.reviewThreads.nodes[] | select(.isResolved == false) | select([.comments.nodes[].author.login] | all(. == "github-actions")) | select([.comments.nodes[].reactions.totalCount] | add == 0) | .comments.nodes[].databaseId' \
             | while read comment_id; do
                 if [ -n "$comment_id" ]; then
                   echo "🗑️  인라인 코멘트 삭제: $comment_id"
diff --git a/.github/workflows/comment-response.yml b/.github/workflows/comment-response.yml
new file mode 100644
index 0000000..d8f2ea7
--- /dev/null
+++ b/.github/workflows/comment-response.yml
@@ -0,0 +1,31 @@
+name: Claude Issue & PR Comment Response
+
+on:
+  issue_comment:
+    types: [ created ]
+  pull_request_review_comment:
+    types: [ created ]
+
+concurrency:
+  group: claude-comment-${{ github.event.issue.number }}-${{ github.event.comment.id }}
+  cancel-in-progress: false
+
+jobs:
+  respond:
+    if: |
+      github.event.comment.user.login != 'github-actions[bot]' &&
+      contains(github.event.comment.body, '@claude') &&
+      (github.event.comment.author_association == 'MEMBER' ||
+       github.event.comment.author_association == 'OWNER' ||
+       github.event.comment.author_association == 'COLLABORATOR')
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write
+      issues: write
+    steps:
+      - uses: actions/checkout@v4
+      - uses: anthropics/claude-code-action@v1
+        with:
+          claude_code_oauth_token: ${{ secrets.CLAUDE_CODE_OAUTH_TOKEN }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}