add latest to regular testing version matrix and nightly test against head (#64)

Author: alex-clickhouse

.github/workflows/nightly.yml

@@ -0,0 +1,17 @@
+name: Nightly head test
+
+on:
+  schedule:
+    # Run once a day at 2:00 AM UTC
+    - cron: '0 2 * * *'
+  workflow_dispatch: # Allow manual triggering
+
+jobs:
+  test-head:
+    name: Test against ClickHouse HEAD
+    uses: ./.github/workflows/reusable.yml
+    secrets: inherit
+    with:
+      clickhouse-version: head
+    permissions:
+      statuses: write

.github/workflows/tests.yml

@@ -30,6 +30,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
+          - "latest"
           - "25.10"
           - "25.9"
           - "25.8"