refactor client, split in multiple files

Author: nbari

.github/workflows/test.yml

@@ -62,3 +62,31 @@ jobs:
 
       - name: test
         run: cargo test
+
+  explain-safety:
+    name: Explain Safety
+    runs-on: ubuntu-latest
+    needs:
+      - format
+      - lint
+      - check
+    services:
+      postgres:
+        image: postgres:18
+        env:
+          POSTGRES_PASSWORD: postgres
+        ports:
+          - 5432:5432
+        options: >-
+          --health-cmd "pg_isready -U postgres"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+    env:
+      PGMON_TEST_DSN: postgresql://postgres:postgres@localhost:5432/postgres
+    steps:
+      - uses: actions/checkout@v6
+      - uses: dtolnay/rust-toolchain@stable
+
+      - name: explain safety
+        run: cargo test --all-features explain_safety