fix: add patient form validation and auth proxy

- Fix dateOfBirth default from empty string to null (caused Invalid date error)
- Add noValidate to form to prevent browser native email validation blocking submit
- Reset form when switching from edit to add mode
- Export API_BASE_URL from queryClient; switch patient table to raw fetch (prevents token wipe on 401)
- Add Authorization header forwarding in Vite proxy (was stripped by nginx Connection:upgrade)
- Make only firstName, lastName, dateOfBirth, phone required; gender optional
- Add +1 prefix to phone number input (stores as 1XXXXXXXXXX)

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

apps/Frontend/vite.config.ts

@@ -18,6 +18,12 @@ export default defineConfig(({ mode }) => {
         "/api": {
           target: env.VITE_API_BASE_URL_BACKEND || "http://localhost:5000",
           changeOrigin: true,
+          configure: (proxy) => {
+            proxy.on("proxyReq", (proxyReq, req) => {
+              const auth = (req as any).headers["authorization"];
+              if (auth) proxyReq.setHeader("Authorization", auth);
+            });
+          },
         },
         "/socket.io": {
           target: env.VITE_API_BASE_URL_BACKEND || "http://localhost:5000",