feat(deploy): harden production proxy and cron configuration

app/api/cron/autosync/route.ts

@@ -9,7 +9,7 @@ export async function POST(req: Request) {
 
   try {
     const secret = req.headers.get("x-cron-secret");
-    if (!env.cronSecret || !secret || secret !== env.cronSecret) {
+    if (!env.cronSharedSecret || !secret || secret !== env.cronSharedSecret) {
       return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
     }
 

app/api/cron/health/route.ts

@@ -9,7 +9,7 @@ export async function POST(req: Request) {
 
   try {
     const secret = req.headers.get("x-cron-secret");
-    if (!env.cronSecret || !secret || secret !== env.cronSecret) {
+    if (!env.cronSharedSecret || !secret || secret !== env.cronSharedSecret) {
       return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
     }
 

app/auth/callback/route.ts

@@ -2,12 +2,18 @@ import { createRouteHandlerClient } from "@supabase/auth-helpers-nextjs";
 import { NextResponse } from "next/server";
 import { cookies } from "next/headers";
 
+import { env } from "@/lib/env";
 import type { Database } from "@/lib/types";
 
 export async function GET(request: Request) {
   const requestUrl = new URL(request.url);
   const code = requestUrl.searchParams.get("code");
-  const next = requestUrl.searchParams.get("next") ?? "/dashboard";
+  const nextParam = requestUrl.searchParams.get("next");
+  const next =
+    nextParam && nextParam.startsWith("/") && !nextParam.startsWith("//")
+      ? nextParam
+      : "/dashboard";
+  const redirectOrigin = env.appOrigin || requestUrl.origin;
 
   if (code) {
     const supabase = createRouteHandlerClient<Database>({ cookies });
@@ -15,18 +21,16 @@ export async function GET(request: Request) {
     if (error) {
       console.error(error);
       return NextResponse.redirect(
-        new URL(`/login?authError=1`, requestUrl.origin),
+        new URL(`/login?authError=1`, redirectOrigin),
       );
     }
     const {
       data: { user },
     } = await supabase.auth.getUser();
     if (!user) {
-      return NextResponse.redirect(
-        new URL(`/login?noUser=1`, requestUrl.origin),
-      );
+      return NextResponse.redirect(new URL(`/login?noUser=1`, redirectOrigin));
     }
   }
 
-  return NextResponse.redirect(new URL(next, requestUrl.origin));
+  return NextResponse.redirect(new URL(next, redirectOrigin));
 }