fix: redirect Jira authorize errors to dashboard settings with toast

Instead of returning raw plain text responses ("Unauthorized",
"Jira integration not configured"), redirect to the dashboard settings
page with error query params so users see friendly toast messages.

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

Author: INQTR

src/app/api/integrations/jira/authorize/route.ts

@@ -1,17 +1,18 @@
 import { cookies } from "next/headers";
+import { redirect } from "next/navigation";
 import { isAuthenticated } from "@/lib/auth-server";
 
 export async function GET() {
   const authed = await isAuthenticated();
   if (!authed) {
-    return new Response("Unauthorized", { status: 401 });
+    redirect("/dashboard/settings?tab=integrations&error=jira_unauthorized");
   }
 
   const clientId = process.env.JIRA_CLIENT_ID;
   const appUrl = process.env.NEXT_PUBLIC_APP_URL ?? process.env.NEXT_PUBLIC_SITE_URL;
 
   if (!clientId || !appUrl) {
-    return new Response("Jira integration not configured", { status: 500 });
+    redirect("/dashboard/settings?tab=integrations&error=jira_not_configured");
   }
 
   // CSRF protection: store random state in httpOnly cookie

src/components/dashboard/integrations-settings.tsx

@@ -31,6 +31,9 @@ export function IntegrationsSettings() {
     const error = searchParams.get("error");
     if (error?.startsWith("jira_")) {
       const messages: Record<string, string> = {
+        jira_unauthorized: "You must be signed in to connect Jira.",
+        jira_not_configured:
+          "Jira integration is not configured. Please contact the administrator.",
         jira_denied: "Jira authorization was denied.",
         jira_invalid: "Invalid callback parameters.",
         jira_state_mismatch: "Security check failed. Please try again.",