diff --git a/.github/workflows/scheduled-test.yml b/.github/workflows/scheduled-test.yml
new file mode 100644
index 0000000..2b57734
--- /dev/null
+++ b/.github/workflows/scheduled-test.yml
@@ -0,0 +1,184 @@
+name: "Scheduled - Test All Features"
+
+on:
+  schedule:
+    - cron: '0 0 * * 0' # Every Sunday at midnight UTC
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  get-all-features:
+    runs-on: ubuntu-latest
+    outputs:
+      features: ${{ steps.list.outputs.features }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "List all features"
+        id: list
+        run: |
+          FEATURES=$(ls src/ | sort | jq -R -s -c 'split("\n") | map(select(length > 0))')
+          echo "features=$FEATURES" >> $GITHUB_OUTPUT
+
+  test-autogenerated:
+    needs: get-all-features
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      max-parallel: 10
+      matrix:
+        feature: ${{ fromJson(needs.get-all-features.outputs.features) }}
+        baseImage:
+          - debian:latest
+          - ubuntu:latest
+          - mcr.microsoft.com/devcontainers/base:ubuntu
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Sanitize base image name"
+        run: |
+          BASE_IMAGE_SAFE=$(echo "${{ matrix.baseImage }}" | sed 's/[/: ]/-/g')
+          echo "BASE_IMAGE_SAFE=$BASE_IMAGE_SAFE" >> $GITHUB_ENV
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Test '${{ matrix.feature }}' against '${{ matrix.baseImage }}' (with retry)"
+        run: |
+          LOG_FILE="${{ runner.temp }}/test-log.txt"
+          max_attempts=3
+          attempt=1
+          while true; do
+            echo "=== Attempt $attempt of $max_attempts ===" | tee -a "$LOG_FILE"
+            if devcontainer features test \
+                --skip-scenarios \
+                -f "${{ matrix.feature }}" \
+                -i "${{ matrix.baseImage }}" \
+                . 2>&1 | tee -a "$LOG_FILE"; then
+              echo "Tests passed on attempt $attempt"
+              exit 0
+            fi
+            echo "Attempt $attempt failed" | tee -a "$LOG_FILE"
+            if [ "$attempt" -ge "$max_attempts" ]; then
+              echo "All $max_attempts attempts failed" | tee -a "$LOG_FILE"
+              exit 1
+            fi
+            attempt=$((attempt + 1))
+            echo "Retrying in 30 seconds..." | tee -a "$LOG_FILE"
+            sleep 30
+          done
+
+      - name: "Upload failure log"
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: failure-autogen-${{ matrix.feature }}-${{ env.BASE_IMAGE_SAFE }}
+          path: ${{ runner.temp }}/test-log.txt
+
+  test-scenarios:
+    needs: get-all-features
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    continue-on-error: true
+    strategy:
+      fail-fast: false
+      max-parallel: 10
+      matrix:
+        feature: ${{ fromJson(needs.get-all-features.outputs.features) }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: "Install latest devcontainer CLI"
+        run: npm install -g @devcontainers/cli
+
+      - name: "Test '${{ matrix.feature }}' scenarios (with retry)"
+        run: |
+          LOG_FILE="${{ runner.temp }}/test-log.txt"
+          max_attempts=3
+          attempt=1
+          while true; do
+            echo "=== Attempt $attempt of $max_attempts ===" | tee -a "$LOG_FILE"
+            if devcontainer features test \
+                -f "${{ matrix.feature }}" \
+                --skip-autogenerated \
+                --skip-duplicated \
+                . 2>&1 | tee -a "$LOG_FILE"; then
+              echo "Tests passed on attempt $attempt"
+              exit 0
+            fi
+            echo "Attempt $attempt failed" | tee -a "$LOG_FILE"
+            if [ "$attempt" -ge "$max_attempts" ]; then
+              echo "All $max_attempts attempts failed" | tee -a "$LOG_FILE"
+              exit 1
+            fi
+            attempt=$((attempt + 1))
+            echo "Retrying in 30 seconds..." | tee -a "$LOG_FILE"
+            sleep 30
+          done
+
+      - name: "Upload failure log"
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: failure-scenarios-${{ matrix.feature }}
+          path: ${{ runner.temp }}/test-log.txt
+
+  create-issue:
+    needs: [test-autogenerated, test-scenarios]
+    if: always()
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+    steps:
+      - name: "Download all failure artifacts"
+        id: download
+        continue-on-error: true
+        uses: actions/download-artifact@v4
+        with:
+          pattern: failure-*
+          path: ${{ runner.temp }}/failures
+
+      - name: "Create issue for failures"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          FAILURES_DIR="${{ runner.temp }}/failures"
+          if [ ! -d "$FAILURES_DIR" ] || [ -z "$(ls -A "$FAILURES_DIR" 2>/dev/null)" ]; then
+            echo "No test failures found. Skipping issue creation."
+            exit 0
+          fi
+
+          # Build issue body
+          {
+            echo "## Scheduled Feature Test Failures"
+            echo ""
+            echo "The weekly scheduled test detected failures in one or more features after **3 retry attempts**."
+            echo ""
+            echo "**Workflow run:** ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+            echo ""
+            echo "---"
+            echo ""
+            for dir in "$FAILURES_DIR"/*/; do
+              artifact_name=$(basename "$dir")
+              echo "### \`$artifact_name\`"
+              echo ""
+              echo "<details>"
+              echo "<summary>Expand log</summary>"
+              echo ""
+              echo '```'
+              cat "$dir/test-log.txt" 2>/dev/null || echo "No log available"
+              echo '```'
+              echo ""
+              echo "</details>"
+              echo ""
+            done
+          } > "${{ runner.temp }}/issue-body.md"
+
+          gh issue create \
+            --repo "${{ github.repository }}" \
+            --title "Scheduled Test Failures - ${{ github.run_started_at }}" \
+            --body-file "${{ runner.temp }}/issue-body.md"