Nebula: Save auth token for 14d (#6864)

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## PR-Codex overview
This PR updates the session cookie expiration time from 3 days to 14 days by introducing a constant `FOURTEEN_DAYS_IN_SECONDS`. This change is reflected in multiple functions related to user login and session management.

### Detailed summary
- Added constant `FOURTEEN_DAYS_IN_SECONDS` set to `14 * 24 * 60 * 60`.
- Updated `maxAge` for cookies in `doNebulaLogin` to `FOURTEEN_DAYS_IN_SECONDS`.
- Updated `maxAge` for cookies in `isNebulaLoggedIn` to `FOURTEEN_DAYS_IN_SECONDS`.

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Author: MananTank

apps/dashboard/src/app/nebula-app/login/auth-actions.ts

@@ -16,6 +16,8 @@ import {
   NEBULA_COOKIE_PREFIX_TOKEN,
 } from "../_utils/constants";
 
+const FOURTEEN_DAYS_IN_SECONDS = 14 * 24 * 60 * 60;
+
 export async function getNebulaLoginPayload(
   params: GenerateLoginPayloadParams,
 ): Promise<LoginPayload> {
@@ -131,8 +133,7 @@ export async function doNebulaLogin(
       httpOnly: true,
       secure: true,
       sameSite: "strict",
-      // 3 days
-      maxAge: 3 * 24 * 60 * 60,
+      maxAge: FOURTEEN_DAYS_IN_SECONDS,
     },
   );
 
@@ -144,8 +145,7 @@ export async function doNebulaLogin(
       httpOnly: true,
       secure: true,
       sameSite: "strict",
-      // 3 days
-      maxAge: 3 * 24 * 60 * 60,
+      maxAge: FOURTEEN_DAYS_IN_SECONDS,
     },
   );
 
@@ -209,8 +209,7 @@ export async function isNebulaLoggedIn(address: string) {
     httpOnly: false,
     secure: true,
     sameSite: "strict",
-    // 3 days
-    maxAge: 3 * 24 * 60 * 60,
+    maxAge: FOURTEEN_DAYS_IN_SECONDS,
   });
   return true;
 }