fix: use SSL-tolerant axios instance for server-side API calls

صفحات سرور (doctors, doctor/[slug], appointment/[doctorId]) از axios خام
استفاده می‌کردند که گواهی self-signed ddev محلی را رد می‌کرد
(unable to verify the first certificate). حالا از axiosInstance/fetchReq
در lib/req استفاده می‌کنند که در development آن را می‌پذیرد.
افزودن clinic-pro.ddev.site (http/https) به remotePatterns تصاویر.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

lib/req.js

@@ -1,7 +1,7 @@
 import axios from "axios";
 import https from "https";
 
-const axiosInstance = axios.create({
+export const axiosInstance = axios.create({
   ...(process.env.NODE_ENV === "development" && {
     httpsAgent: new https.Agent({ rejectUnauthorized: false }),
   }),