feat: update footer with site policies, add CTA retrieval SQL, and refactor block content management

sisvietnamvn_main/.temp/read_snippets.java

@@ -0,0 +1,22 @@
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.ResultSet;
+import java.sql.Statement;
+
+public class ReadSnippets {
+    public static void main(String[] args) {
+        try {
+            Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521/sisvietnam", "sisvietnam", "sisvietnam");
+            Statement stmt = conn.createStatement();
+            ResultSet rs = stmt.executeQuery("SELECT slug, content FROM html_snippet");
+            while (rs.next()) {
+                System.out.println("Snippet: " + rs.getString("slug"));
+                if (rs.getString("slug").equals("content_main")) {
+                    System.out.println(rs.getString("content"));
+                }
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}