diff --git a/.gitea/workflows/deploy.yml b/.gitea/workflows/deploy.yml
index b8eaa750..bcbb29d2 100644
--- a/.gitea/workflows/deploy.yml
+++ b/.gitea/workflows/deploy.yml
@@ -35,9 +35,16 @@ jobs:
       - name: Build frontend into Host static assets
         run: |
           pnpm install --frozen-lockfile
-          VITE_APP_VERSION="${GITHUB_SHA::7}" pnpm build
+          VERSION_DATE="$(TZ=Asia/Seoul date +%Y.%m.%d)"
+          RELEASE_COUNT="$(git ls-remote --tags origin "refs/tags/v${VERSION_DATE}.*" | wc -l | tr -d ' ')"
+          VERSION_SEQUENCE="$((RELEASE_COUNT + 1))"
+          APP_VERSION="${VERSION_DATE}.${VERSION_SEQUENCE}.${GITHUB_SHA::10}"
+          echo "VITE_APP_VERSION=${APP_VERSION}" >> "$GITHUB_ENV"
+          echo "release_version=${APP_VERSION}"
+          VITE_APP_VERSION="${APP_VERSION}" pnpm build
           grep -R -q 'app-version' dist
           grep -R -q 'UI contract 4.0' dist
+          grep -R -q "${APP_VERSION}" dist
           find ../src/KArtSell.Host/wwwroot -mindepth 1 -delete
           cp -R dist/. ../src/KArtSell.Host/wwwroot/
         working-directory: frontend
diff --git a/docs/CURRENT/DEPLOY_FRONTEND_ARTIFACT_CONTRACT.md b/docs/CURRENT/DEPLOY_FRONTEND_ARTIFACT_CONTRACT.md
index 18508167..d62ca867 100644
--- a/docs/CURRENT/DEPLOY_FRONTEND_ARTIFACT_CONTRACT.md
+++ b/docs/CURRENT/DEPLOY_FRONTEND_ARTIFACT_CONTRACT.md
@@ -8,7 +8,13 @@
 
 ## Decision
 
-배포 workflow는 Host publish 전에 `pnpm install --frozen-lockfile`과 `VITE_APP_VERSION=${GITHUB_SHA::7} pnpm build`를 실행한다. 생성된 `frontend/dist`를 Host `wwwroot`에 복사하고, `app-version`과 `UI contract 4.0` marker가 없으면 배포를 중단한다.
+배포 workflow는 Host publish 전에 다음 규칙으로 버전을 계산하고 frontend를 재생성한다.
+
+```text
+YYYY.MM.DD.<당일 release 순번>.<commit SHA 10자리>
+```
+
+당일 순번은 `vYYYY.MM.DD.*` release tag 개수에 1을 더해 계산한다. 예: `2026.08.06.1.acaa731b3f`. 생성된 `frontend/dist`를 Host `wwwroot`에 복사하고, `app-version`, `UI contract 4.0`, 계산된 전체 버전 marker가 없으면 배포를 중단한다.
 
 ## Evidence / Unknown