feat: implement modular UMass theme components and supporting generation scripts for home page structure

sisvietnamvn_main/update_snippet.py

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+import oracledb
+import sys
+
+def main():
+    try:
+        connection = oracledb.connect(user='sisvietnam', password='sisvietnam', dsn='localhost:1521/sisvietnam')
+        cursor = connection.cursor()
+        
+        content = '[component:video-fallback]'
+        
+        cursor.execute("UPDATE html_snippet SET content = :content WHERE slug = 'content-top'", content=content)
+        if cursor.rowcount > 0:
+            print("Successfully updated content-top snippet to use video-fallback component!")
+        else:
+            print("Warning: content-top snippet not found in DB.")
+        
+        connection.commit()
+        cursor.close()
+        connection.close()
+    except Exception as e:
+        print(f"Error: {e}")
+        sys.exit(1)
+
+if __name__ == '__main__':
+    main()