diff --git a/ui/components/SessionsPage.tsx b/ui/components/SessionsPage.tsx
index 04b67fc..cb2ddee 100644
--- a/ui/components/SessionsPage.tsx
+++ b/ui/components/SessionsPage.tsx
@@ -1007,7 +1007,7 @@ export const SessionsPage = ({
               const eventId = e.currentTarget.getAttribute('data-event-id');
               e.currentTarget.disabled = true;
               try {
-                const res = await fetch(\`/api/events/\${eventId}/extend\`, {
+                const res = await fetch('/api/events/' + eventId + '/extend', {
                   method: 'POST',
                   headers: { 'Content-Type': 'application/json' },
                   body: JSON.stringify({ extendHours: 1 })
@@ -1036,7 +1036,7 @@ export const SessionsPage = ({
               e.currentTarget.textContent = 'Revoking...';
               
               try {
-                const res = await fetch(\`/api/events/\${eventId}/end\`, {
+                const res = await fetch('/api/events/' + eventId + '/end', {
                   method: 'POST',
                 });
                 if (res.ok) {
@@ -1047,6 +1047,7 @@ export const SessionsPage = ({
                   showNotice(data.error || 'Failed to end event', true);
                   e.currentTarget.disabled = false;
                   e.currentTarget.textContent = '🔴 End & Revoke All';
+                }
               } catch (err) {
                 showNotice('Network error ending event', true);
                 e.currentTarget.disabled = false;
@@ -1066,7 +1067,7 @@ export const SessionsPage = ({
               e.currentTarget.disabled = true;
 
               try {
-                const res = await fetch(\`/api/sessions/\${sessionId}\`, {
+                const res = await fetch('/api/sessions/' + sessionId, {
                   method: 'DELETE'
                 });
 
diff --git a/ui/ui_scripts.test.ts b/ui/ui_scripts.test.ts
new file mode 100644
index 0000000..e437ffb
--- /dev/null
+++ b/ui/ui_scripts.test.ts
@@ -0,0 +1,135 @@
+import { assertEquals } from "jsr:@std/assert@1";
+import { SessionsPage } from "./components/SessionsPage.tsx";
+import { LoginPage } from "./components/LoginPage.tsx";
+import { RegisterPage } from "./components/RegisterPage.tsx";
+import { EventJoinPage } from "./components/EventJoinPage.tsx";
+import { EventSplashPage } from "./components/EventSplashPage.tsx";
+import { PasskeysPage } from "./components/PasskeysPage.tsx";
+import { AdminAppsPage } from "./components/AdminAppsPage.tsx";
+import { AdminInvitesPage } from "./components/AdminInvitesPage.tsx";
+import { AdminRolesPage } from "./components/AdminRolesPage.tsx";
+import { AdminUsersPage } from "./components/AdminUsersPage.tsx";
+import { AdminUserDetailsPage } from "./components/AdminUserDetailsPage.tsx";
+import { AuditLogPage } from "./components/AuditLogPage.tsx";
+import { AAGUIDPage } from "./components/AAGUIDPage.tsx";
+
+function validateJsSyntax(componentName: string, jsxResult: any) {
+  const html = String(jsxResult);
+  const scriptRegex = /<script\b([^>]*)>([\s\S]*?)<\/script>/gi;
+  let match;
+  let scriptCount = 0;
+  while ((match = scriptRegex.exec(html)) !== null) {
+    const isModule = match[1].includes('type="module"') ||
+      match[1].includes("type='module'");
+    const scriptContent = match[2].trim();
+    if (!scriptContent) continue;
+    scriptCount++;
+    try {
+      if (isModule) {
+        // Strip import statements for syntax compilation check in new Function
+        const cleanContent = scriptContent.replace(
+          /import\s+[\s\S]*?from\s+['"][^'"]+['"];?/g,
+          "// import stripped",
+        );
+        new Function(cleanContent);
+      } else {
+        new Function(scriptContent);
+      }
+    } catch (err: any) {
+      throw new Error(
+        `Syntax error in <script> inside ${componentName}: ${err.message}\n---\n${scriptContent}\n---`,
+      );
+    }
+  }
+  return scriptCount;
+}
+
+Deno.test("UI Script Validation - SessionsPage", () => {
+  const result = SessionsPage({
+    sessions: [
+      {
+        id: "ay_sess_1",
+        label: "Test Session",
+        is_agent: true,
+        custom_scopes: ["read:audit"],
+        created_at: new Date().toISOString(),
+        expires_at: new Date(Date.now() + 3600000).toISOString(),
+      },
+    ],
+    currentSessionId: "ay_sess_1",
+    apps: [],
+    isAdmin: true,
+    eventPasses: [
+      {
+        id: "evt-1",
+        name: "Workshop 101",
+        slug: "workshop-101",
+        pin_code: "123-456",
+        max_seats: 50,
+        seats_claimed: 10,
+        is_active: true,
+        expires_at: new Date(Date.now() + 3600000).toISOString(),
+      },
+    ],
+  });
+  const count = validateJsSyntax("SessionsPage", result);
+  assertEquals(count > 0, true);
+});
+
+Deno.test("UI Script Validation - LoginPage & RegisterPage", () => {
+  validateJsSyntax("LoginPage", LoginPage());
+  validateJsSyntax("RegisterPage", RegisterPage({ initialCode: "" }));
+});
+
+Deno.test("UI Script Validation - Event Pages", () => {
+  validateJsSyntax("EventJoinPage", EventJoinPage());
+  validateJsSyntax(
+    "EventSplashPage",
+    EventSplashPage({
+      event: {
+        id: "evt-1",
+        name: "Workshop",
+        slug: "workshop",
+        pin_code: "123-456",
+        max_seats: 50,
+        seats_claimed: 5,
+        lifespan_hours: 2,
+        role: "viewer",
+        expires_at: new Date(Date.now() + 3600000).toISOString(),
+      },
+    }),
+  );
+});
+
+Deno.test("UI Script Validation - Admin Pages", () => {
+  validateJsSyntax(
+    "PasskeysPage",
+    PasskeysPage({ passkeys: [], isAdmin: true }),
+  );
+  validateJsSyntax("AdminAppsPage", AdminAppsPage({ apps: [] }));
+  validateJsSyntax(
+    "AdminInvitesPage",
+    AdminInvitesPage({ invites: [], apps: [], allRoles: [] }),
+  );
+  validateJsSyntax(
+    "AdminRolesPage",
+    AdminRolesPage({ roles: [], apps: [] }),
+  );
+  validateJsSyntax(
+    "AdminUsersPage",
+    AdminUsersPage({ users: [] }),
+  );
+  validateJsSyntax(
+    "AdminUserDetailsPage",
+    AdminUserDetailsPage({
+      user: { id: "u-1", username: "test", account_status: "active" },
+      sessions: [],
+      passkeys: [],
+      grants: [],
+      allApps: [],
+      allRoles: [],
+    }),
+  );
+  validateJsSyntax("AuditLogPage", AuditLogPage({ logs: [] }));
+  validateJsSyntax("AAGUIDPage", AAGUIDPage({ allowlist: [] }));
+});