Add create game and manage game pages, update navigation and session handling for individual and business users

app/Model/SessionStore.js

@@ -3,6 +3,8 @@ const session = {
   currentGid: null,
   currentSGid: null,
   currentTGid: null,
+  currentIsBusiness: null,
+  currentIsAcceptedAdmin: false,
 };
 
 const setSessionUser = (user) => {
@@ -10,6 +12,8 @@ const setSessionUser = (user) => {
   session.currentGid = user?.Gid ?? null;
   session.currentSGid = user?.SGid ?? null;
   session.currentTGid = user?.TGid ?? null;
+  session.currentIsBusiness = user?.isBusiness ?? null;
+  session.currentIsAcceptedAdmin = Boolean(user?.IsAcceptedAdmin);
 };
 
 const setSessionGroup = (gid, sgid = null) => {
@@ -19,12 +23,23 @@ const setSessionGroup = (gid, sgid = null) => {
   }
 };
 
+const setSessionMembership = ({ gid = null, sgid = null, isAcceptedAdmin = false } = {}) => {
+  session.currentGid = gid;
+  session.currentSGid = sgid;
+  session.currentIsAcceptedAdmin = Boolean(isAcceptedAdmin);
+};
+
 const setSessionTeam = (tgid) => {
   session.currentTGid = tgid ?? null;
 };
 
 const getSession = () => ({ ...session });
 
-export { setSessionUser, setSessionGroup, setSessionTeam, getSession };
+export { setSessionUser, setSessionGroup, setSessionMembership, setSessionTeam, getSession };
+
+// Default placeholder export to avoid Expo Router treating this non-component file as a route without a default.
+export default function SessionStorePlaceholder() {
+  return null;
+}