fix: resolve critical bugs and security issues across the project

Security:
- Disable SSL verification only in development (lib/req.js)
- Wrap all JSON.parse(cookie) calls in try-catch via safeJsonParse utility
- Sanitize dangerouslySetInnerHTML in blog/clinic with sanitizeHtml utility
- Fix open redirect in payment page — validate URL origin before redirect
- Fix cookie cleanup on 401 — use js-cookie with correct domain scope

Performance:
- Wrap ItemDoctor with React.memo to prevent unnecessary re-renders
- Replace <img> with Next.js <Image> in blog Caption component

Functionality:
- Fix memory leak in Recode.js — store intervals in refs, cleanup on unmount
- Add null guard on retryIcon.current before classList manipulation
- Fix getParsedUserInfo in helper to handle malformed cookie gracefully

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/component/ItemDoctor.js

@@ -1,3 +1,4 @@
+import { memo } from "react";
 import Image from "next/image";
 import { Button } from "@mui/material";
 import Link from "next/link";
@@ -109,4 +110,4 @@ function ItemDoctor({ doctor, loading, setDoctors, priority = false }) {
   );
 }
 
-export default ItemDoctor;
+export default memo(ItemDoctor);