Bump zlmdb to v25.10.2 and add release fileset validation

Two improvements for cfxdb release process:

1. **Bump zlmdb dependency:**
   - Updated from >=25.10.1 to >=25.10.2
   - Brings in latest zlmdb fixes and improvements

2. **Add release fileset validation:**
   - Validates exactly 1 universal wheel present
   - Validates exactly 1 source distribution present
   - Checks wheel is universal (py2.py3-none-any or py3-none-any)
   - Fail-fast before GitHub release creation and PyPI upload

**Validation ensures:**
- Correct number of distribution files
- Pure Python universal wheel format
- Consistent release artifacts

Complements existing CHECKSUMS generation and PyPI cleanup steps.

Author: oberstet

.github/workflows/release.yml

@@ -90,6 +90,58 @@ jobs:
       - name: List artifacts
         run: ls -lh dist/
 
+      - name: Validate release fileset
+        run: |
+          echo "======================================================================"
+          echo "==> Validating Release Fileset"
+          echo "======================================================================"
+          echo ""
+
+          # Count wheels and source distributions
+          WHEEL_COUNT=$(find dist -name "*.whl" -type f | wc -l)
+          SDIST_COUNT=$(find dist -name "*.tar.gz" -type f | wc -l)
+
+          echo "Found:"
+          echo "  - Wheels: $WHEEL_COUNT"
+          echo "  - Source distributions: $SDIST_COUNT"
+          echo ""
+
+          # Validate counts
+          HAS_ERRORS=0
+
+          if [ "$WHEEL_COUNT" -ne 1 ]; then
+            echo "❌ ERROR: Expected exactly 1 wheel, found $WHEEL_COUNT"
+            HAS_ERRORS=1
+          else
+            WHEEL_FILE=$(find dist -name "*.whl" -type f)
+            echo "✅ Wheel: $(basename $WHEEL_FILE)"
+
+            # Verify it's a universal wheel
+            if [[ "$WHEEL_FILE" != *"-py2.py3-none-any.whl" ]] && [[ "$WHEEL_FILE" != *"-py3-none-any.whl" ]]; then
+              echo "⚠️  WARNING: Wheel is not universal (py2.py3-none-any or py3-none-any)"
+            fi
+          fi
+
+          if [ "$SDIST_COUNT" -ne 1 ]; then
+            echo "❌ ERROR: Expected exactly 1 source distribution, found $SDIST_COUNT"
+            HAS_ERRORS=1
+          else
+            SDIST_FILE=$(find dist -name "*.tar.gz" -type f ! -name "CHECKSUMS*.sha256")
+            echo "✅ Source: $(basename $SDIST_FILE)"
+          fi
+
+          echo ""
+          if [ $HAS_ERRORS -eq 1 ]; then
+            echo "======================================================================"
+            echo "❌ VALIDATION FAILED"
+            echo "======================================================================"
+            exit 1
+          else
+            echo "======================================================================"
+            echo "✅ VALIDATION PASSED"
+            echo "======================================================================"
+          fi
+
       - name: Get version
         id: get_version
         run: |

pyproject.toml

@@ -42,7 +42,7 @@ classifiers = [
 dependencies = [
     # WAMP ecosystem packages
     "autobahn[all]>=25.10.2",
-    "zlmdb>=25.10.1",
+    "zlmdb>=25.10.2",
 
     # Ethereum/Web3 stack
     "eth-abi>=5.1.0",