Exclude integration tests from CI (require Docker)

Integration tests in tests/integration/ require Docker containers
(PostgreSQL, MinIO) for comparison testing. Run only unit tests
in CI which don't have external dependencies.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: EDsCODE

.github/workflows/ci.yml

@@ -24,8 +24,8 @@ jobs:
         with:
           go-version-file: go.mod
 
-      - name: Run tests
-        run: go test -v ./...
+      - name: Run unit tests
+        run: go test -v ./server/... ./transpiler/...
 
       - name: Build
         run: go build -o duckgres .