User already exists message is red. Modals to the viewport center. Fixed Quit option: it deletes the session.

App.tsx

@@ -102,6 +102,7 @@ function App() {
 
   const handleStartSession = async (plan?: WorkoutPlan, startWeight?: number) => {
     if (!currentUser) return;
+    if (activeSession) return;
 
     // Get latest weight from profile or default
     const profile = getCurrentUserProfile(currentUser.id);

components/Plans.tsx

@@ -265,7 +265,7 @@ const Plans: React.FC<PlansProps> = ({ userId, onStartPlan, lang }) => {
         </div>
 
         {showExerciseSelector && (
-          <div className="absolute inset-0 bg-surface z-50 flex flex-col animate-in slide-in-from-bottom-full duration-200">
+          <div className="fixed inset-0 bg-surface z-50 flex flex-col animate-in slide-in-from-bottom-full duration-200">
             <div className="px-4 py-3 border-b border-outline-variant flex justify-between items-center bg-surface-container">
               <span className="font-medium text-on-surface">{t('select_exercise', lang)}</span>
               <div className="flex gap-2">
@@ -292,7 +292,7 @@ const Plans: React.FC<PlansProps> = ({ userId, onStartPlan, lang }) => {
             </div>
 
             {isCreatingExercise && (
-              <div className="absolute inset-0 bg-surface z-[60] flex flex-col animate-in slide-in-from-bottom-full duration-200">
+              <div className="fixed inset-0 bg-surface z-[60] flex flex-col animate-in slide-in-from-bottom-full duration-200">
                 <div className="px-4 py-3 border-b border-outline-variant flex justify-between items-center bg-surface-container">
                   <h3 className="text-title-medium font-medium text-on-surface">{t('create_exercise', lang)}</h3>
                   <button onClick={() => setIsCreatingExercise(false)} className="p-2 text-on-surface-variant hover:bg-white/5 rounded-full"><X /></button>

components/Profile.tsx

@@ -490,7 +490,7 @@ const Profile: React.FC<ProfileProps> = ({ user, onLogout, lang, onLanguageChang
                             <button onClick={handleCreateUser} className="w-full py-2 bg-primary text-on-primary rounded-full text-sm font-medium">
                                 {t('create_btn', lang)}
                             </button>
-                            {createMsg && <p className="text-xs text-on-surface-variant text-center">{createMsg}</p>}
+                            {createMsg && <p className="text-xs text-error text-center font-medium">{createMsg}</p>}
                         </div>
 
                         {/* User List */}

components/Tracker/ActiveSessionView.tsx

@@ -432,7 +432,7 @@ const ActiveSessionView: React.FC<ActiveSessionViewProps> = ({ tracker, activeSe
 
             {/* Finish Confirmation Dialog */}
             {showFinishConfirm && (
-                <div className="absolute inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
+                <div className="fixed inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
                     <div className="w-full max-w-sm bg-surface-container rounded-[28px] p-6 shadow-elevation-3">
                         <h3 className="text-2xl font-normal text-on-surface mb-2">{t('finish_confirm_title', lang)}</h3>
                         <p className="text-on-surface-variant text-sm mb-8">{t('finish_confirm_msg', lang)}</p>
@@ -459,7 +459,7 @@ const ActiveSessionView: React.FC<ActiveSessionViewProps> = ({ tracker, activeSe
 
             {/* Quit Without Saving Confirmation Dialog */}
             {showQuitConfirm && (
-                <div className="absolute inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
+                <div className="fixed inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
                     <div className="w-full max-w-sm bg-surface-container rounded-[28px] p-6 shadow-elevation-3">
                         <h3 className="text-2xl font-normal text-error mb-2">{t('quit_confirm_title', lang)}</h3>
                         <p className="text-on-surface-variant text-sm mb-8">{t('quit_confirm_msg', lang)}</p>

components/Tracker/IdleView.tsx

@@ -94,7 +94,7 @@ const IdleView: React.FC<IdleViewProps> = ({ tracker, lang }) => {
             </div>
 
             {showPlanPrep && (
-                <div className="absolute inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
+                <div className="fixed inset-0 bg-black/60 z-50 flex items-center justify-center p-6 backdrop-blur-sm">
                     <div className="w-full max-w-sm bg-surface-container rounded-[28px] p-6 shadow-elevation-3">
                         <h3 className="text-2xl font-normal text-on-surface mb-4">{showPlanPrep.name}</h3>
                         <div className="bg-surface-container-high p-4 rounded-xl text-on-surface-variant text-sm mb-8">

playwright-report/index.html

@@ -82,4 +82,4 @@ Error generating stack: `+n.message+`
     <div id='root'></div>
   </body>
 </html>
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server/src/routes/sessions.ts

@@ -81,6 +81,16 @@ router.post('/', async (req: any, res) => {
             return res.json(updated);
         } else {
             // Create
+            // If creating a new active session (endTime is null), check if one already exists
+            if (!end) {
+                const active = await prisma.workoutSession.findFirst({
+                    where: { userId, endTime: null }
+                });
+                if (active) {
+                    return res.status(400).json({ error: 'An active session already exists' });
+                }
+            }
+
             const created = await prisma.workoutSession.create({
                 data: {
                     id, // Use provided ID or let DB gen? Frontend usually generates UUIDs.
@@ -381,23 +391,14 @@ router.delete('/active', async (req: any, res) => {
     try {
         const userId = req.user.userId;
 
-        // Find active session
+        // Delete all active sessions for this user to ensure clean state
-        const activeSession = await prisma.workoutSession.findFirst({
+        await prisma.workoutSession.deleteMany({
             where: {
                 userId,
                 endTime: null
             }
         });
 
-        if (!activeSession) {
-            return res.json({ success: true, message: 'No active session found' });
-        }
-
-        // Delete the session (cascade will delete sets)
-        await prisma.workoutSession.delete({
-            where: { id: activeSession.id }
-        });
-
         res.json({ success: true });
     } catch (error) {
         console.error(error);

tests/login-first-time-password-change.spec.ts

@@ -0,0 +1,48 @@
+// spec: specs/gymflow-test-plan.md
+// seed: tests/core-auth.spec.ts
+
+import { test, expect } from '@playwright/test';
+
+test.describe('I. Core & Authentication', () => {
+  test('A. Login - First-Time Password Change', async ({ page }) => {
+    // 1. Navigate to the login page.
+    await page.goto('http://localhost:3000/');
+
+    // Log in as admin to create a new user for testing first-time login
+    await page.getByRole('textbox', { name: 'user@gymflow.ai' }).fill('admin@gymflow.ai');
+    await page.locator('input[type="password"]').fill('admin1234');
+    await page.getByRole('button', { name: 'Login' }).click();
+
+    // Navigate to profile and create a new user
+    await page.getByRole('button', { name: 'Profile' }).click();
+    await page.getByRole('textbox', { name: 'Email' }).fill('test@gymflow.ai');
+    await page.getByRole('textbox', { name: 'Password', exact: true }).fill('test1234');
+    await page.getByRole('button', { name: 'Create' }).click();
+
+    // Log out as admin
+    await page.getByRole('button', { name: 'Logout' }).click();
+
+    // 2. Log in with a first-time user's temporary credentials.
+    await page.getByRole('textbox', { name: 'user@gymflow.ai' }).fill('test@gymflow.ai');
+    await page.locator('input[type="password"]').fill('test1234');
+    await page.getByRole('button', { name: 'Login' }).click();
+
+    // Expected Results:
+    //   - User is prompted to change password on first login.
+    await expect(page.getByRole('heading', { name: 'Change Password' })).toBeVisible();
+
+    // 3. Enter a new password (at least 4 characters).
+    await page.getByRole('textbox').fill('newtestpass');
+
+    // 4. Click 'Save' or 'Change Password' button.
+    await page.getByRole('button', { name: 'Save & Login' }).click();
+
+    // Expected Results:
+    //   - New password is set successfully.
+    //   - User is logged into the application.
+    await page.waitForLoadState('networkidle');
+    await expect(page.getByRole('button', { name: 'Tracker' })).toBeVisible();
+    //   - No error messages are displayed.
+    await expect(page.locator('text=Invalid credentials')).not.toBeVisible();
+  });
+});