diff --git a/.github/workflows/v3.yml b/.github/workflows/v3.yml
deleted file mode 100644
index 47da256..0000000
--- a/.github/workflows/v3.yml
+++ /dev/null
@@ -1,60 +0,0 @@
-name: Build & Push V3 to DockerHub
-
-on:
-  push:
-    branches: [ feature/v3 ]
-
-permissions:
-  contents: read
-
-jobs:
-  docker:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-
-      - name: Read VERSION
-        run: |
-          if [[ ! -f VERSION ]]; then echo "VERSION file missing"; exit 1; fi
-          RAW=$(tr -d ' \n' < VERSION)
-          if [[ -z "$RAW" ]]; then echo "VERSION empty"; exit 1; fi
-          if [[ "$RAW" =~ ^v ]]; then NUM="${RAW#v}"; else NUM="$RAW"; fi
-          REPO_NAME=$(echo "${GITHUB_REPOSITORY}" | cut -d'/' -f2)
-          echo "DOCKER_REPO=${{ secrets.DOCKER_HUB_USERNAME }}/${REPO_NAME}" >> $GITHUB_ENV
-          echo "VERSION_NUM=$NUM" >> $GITHUB_ENV
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4.2.0
-
-      - name: Set up Buildx
-        uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
-
-      - name: Log in to DockerHub
-        uses: docker/login-action@abd2ef45e78c5afb21d64d4ca52ee8550d9572c7 # v4.5.1
-        with:
-          username: ${{ secrets.DOCKER_HUB_USERNAME }}
-          password: ${{ secrets.DOCKER_HUB_TOKEN }}
-
-      - name: Build & push
-        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
-        with:
-          context: .
-          file: ./Dockerfile
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ env.DOCKER_REPO }}:v3
-          build-args: |
-            APP_VERSION=${{ env.VERSION_NUM }}-v3
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-          provenance: false
-
-      - name: Summary
-        run: |
-          echo "✅ V3 image pushed!"
-          echo "Tag: ${{ env.DOCKER_REPO }}:v3"
-          echo ""
-          echo "To test, update docker-compose.yml:"
-          echo "  image: ${{ env.DOCKER_REPO }}:v3"