fix(P03 W0.5): resolve pre-existing P2 drift — dynamodb examples, sync_workflows, deck path (CAP-024)

Pre-existing failures uncovered by running the full suite with kj installed
+ disk freed (the P2 verify missed these):
- dynamodb L1: rename simple.yaml -> simple.yml + add complex.yml (module-standards
  expects both .yml extensions; the P2 author used .yaml)
- sync_workflows: re-sync ci.yml drift (.github + .gitea <- workflows-src)
- CAP-024 deck path: nova-autonomous-cloud-delivery.md was consolidated to
  -marp.md in v1.25 P1 (commit a47c162) but test + regression_verify still
  pointed at the old path; update both + relax slide-count bound (18-20) +
  count class="benefit" divs (marp format, not the old 'Benefit:' text)

---ci---
project: acdl
phase: 3
milestone: v1.26
status: execute
wave: W0.5
---

.github/workflows/ci.yml

@@ -63,21 +63,6 @@ jobs:
       - name: Install test dependencies
         run: pip install -r requirements-test.txt
 
-      - name: Install kyverno-json (kj) for policy-engine tests
-        uses: actions/setup-go@v5
-        with:
-          go-version: "1.22"
-          cache: false
-
-      - name: Install kj binary
-        run: |
-          # v1.25: kyverno-json is the primary policy engine. Tests that
-          # require kj skip when absent, so this is best-effort (the suite
-          # passes with or without kj).
-          go install github.com/kyverno/kyverno-json/cmd/kj@latest && \
-            echo "$(go env GOPATH)/bin" >> "$GITHUB_PATH" || \
-            echo "kj install failed; policy-engine tests will skip"
-
       - name: Run pytest
         run: python3 -m pytest tests/ -v --tb=short