feat: complete SSR CRM and refine auth UI

examples/crm-app/app/lib/auth.ts

@@ -0,0 +1,32 @@
+import { createAuthEngine, SqlAuthStore, type AuthStore } from "@wrnexus/auth";
+import { getDb } from "@wrnexus/db";
+import { dbPermissionStore } from "@wrnexus/authz/db";
+import { ensureCrmWorkspace } from "./workspace.ts";
+
+// Config is imported before the runtime opens its configured database. This
+// forwarding store resolves getDb() only when an auth operation actually runs.
+const store = new Proxy({} as AuthStore, {
+  get(_target, property) {
+    const value = Reflect.get(new SqlAuthStore(getDb()), property);
+    return typeof value === "function" ? value.bind(new SqlAuthStore(getDb())) : value;
+  },
+});
+
+export const auth = createAuthEngine({
+  store,
+  secret: process.env.AUTH_SECRET ?? "northstar-crm-development-secret-change-me",
+  issuer: "Northstar CRM",
+  onSignedIn(ctx, returnTo) {
+    const destination =
+      returnTo?.startsWith("/") && !returnTo.startsWith("//") ? returnTo : "/dashboard";
+    return Response.redirect(new URL(destination, ctx.url), 303);
+  },
+  onSignedOut(ctx) {
+    return Response.redirect(new URL("/", ctx.url), 303);
+  },
+  async onSuccessfulSignUp(_ctx, user) {
+    await dbPermissionStore(getDb()).assignRole(user.id, "sales-rep");
+    await ensureCrmWorkspace(user.id);
+    return { autoSignIn: true, redirectTo: "/dashboard" };
+  },
+});