diff --git a/code/websites/pokedex.online/src/views/ClientCredentialsManager.vue b/code/websites/pokedex.online/src/views/ClientCredentialsManager.vue
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+++ b/code/websites/pokedex.online/src/views/ClientCredentialsManager.vue
@@ -0,0 +1,863 @@
+<template>
+  <div class="client-credentials-manager">
+    <div class="container">
+      <div class="header">
+        <router-link to="/challonge-test" class="back-button">
+          ← Back to Challonge Test
+        </router-link>
+        <h1>Client Credentials Manager</h1>
+      </div>
+
+      <!-- Current Status -->
+      <div class="section">
+        <h2>Current Status</h2>
+        <div v-if="hasCredentials && isAuthenticated" class="status success">
+          <div class="status-icon">✅</div>
+          <div class="status-content">
+            <p><strong>Client Credentials Active</strong></p>
+            <p class="credentials-display">Client ID: {{ maskedClientId }}</p>
+            <p class="token-info">
+              Token expires in: {{ tokenInfo?.expiresIn || 0 }} seconds
+            </p>
+            <div class="button-group">
+              <button @click="handleRefresh" class="btn btn-primary" :disabled="loading">
+                {{ loading ? 'Refreshing...' : 'Refresh Token' }}
+              </button>
+              <button @click="handleLogout" class="btn btn-secondary">
+                Logout
+              </button>
+              <button @click="showDeleteConfirm = true" class="btn btn-danger">
+                Clear Credentials
+              </button>
+            </div>
+          </div>
+        </div>
+        <div v-else-if="hasCredentials" class="status warning">
+          <div class="status-icon">⚠️</div>
+          <div class="status-content">
+            <p><strong>Credentials Stored (Not Authenticated)</strong></p>
+            <p class="credentials-display">Client ID: {{ maskedClientId }}</p>
+            <button
+              @click="handleAuthenticate"
+              class="btn btn-primary"
+              :disabled="loading"
+            >
+              {{ loading ? 'Authenticating...' : 'Get Access Token' }}
+            </button>
+            <button @click="showDeleteConfirm = true" class="btn btn-danger">
+              Clear Credentials
+            </button>
+          </div>
+        </div>
+        <div v-else class="status warning">
+          <div class="status-icon">⚠️</div>
+          <div class="status-content">
+            <p><strong>No Client Credentials Stored</strong></p>
+            <p>Add your OAuth client credentials below to get started</p>
+          </div>
+        </div>
+      </div>
+
+      <!-- Add/Update Credentials -->
+      <div class="section">
+        <div class="section-header">
+          <h2>{{ hasCredentials ? 'Update' : 'Add' }} Client Credentials</h2>
+          <button
+            @click="showGuide = true"
+            class="help-btn"
+            title="How to get client credentials"
+          >
+            ❓ Need Help?
+          </button>
+        </div>
+
+        <div class="form-group">
+          <label for="client-id">OAuth Client ID</label>
+          <input
+            id="client-id"
+            v-model="inputClientId"
+            type="text"
+            placeholder="Enter your OAuth Client ID"
+            class="form-input"
+          />
+        </div>
+
+        <div class="form-group">
+          <label for="client-secret">OAuth Client Secret</label>
+          <div class="input-wrapper">
+            <input
+              id="client-secret"
+              v-model="inputClientSecret"
+              :type="showPassword ? 'text' : 'password'"
+              placeholder="Enter your OAuth Client Secret"
+              class="form-input"
+            />
+            <button
+              @click="showPassword = !showPassword"
+              class="toggle-password"
+              :title="showPassword ? 'Hide' : 'Show'"
+            >
+              {{ showPassword ? '👁️' : '👁️‍🗨️' }}
+            </button>
+          </div>
+        </div>
+
+        <div class="form-group">
+          <label for="scope">OAuth Scope</label>
+          <select id="scope" v-model="selectedScope" class="form-input">
+            <option value="application:manage">
+              application:manage (Full access to app tournaments)
+            </option>
+            <option value="application:organizer">
+              application:organizer (User's app tournaments)
+            </option>
+            <option value="application:player">
+              application:player (Register and report scores)
+            </option>
+            <option value="tournaments:read tournaments:write">
+              tournaments:read tournaments:write (Standard access)
+            </option>
+          </select>
+          <p class="help-text">
+            <strong>application:manage</strong> is required for APPLICATION scope
+            tournament access
+          </p>
+        </div>
+
+        <div v-if="error" class="error-message">
+          {{ error }}
+        </div>
+
+        <button
+          @click="handleSaveCredentials"
+          :disabled="!inputClientId || !inputClientSecret || saving"
+          class="btn btn-primary"
+        >
+          {{
+            saving
+              ? 'Saving...'
+              : hasCredentials
+                ? 'Update & Authenticate'
+                : 'Save & Authenticate'
+          }}
+        </button>
+
+        <div v-if="successMessage" class="success-message">
+          {{ successMessage }}
+        </div>
+      </div>
+
+      <!-- Information -->
+      <div class="section info-section">
+        <h2>ℹ️ What are Client Credentials?</h2>
+        <div class="info-content">
+          <p>
+            <strong>Client Credentials Flow</strong> is an OAuth 2.0 authentication
+            method for server-to-server communication. It allows your application to
+            access resources without user interaction.
+          </p>
+
+          <h3>When to use this:</h3>
+          <ul>
+            <li>
+              <strong>APPLICATION Scope:</strong> Access all tournaments associated
+              with your OAuth application
+            </li>
+            <li>
+              <strong>Background tasks:</strong> Automated scripts that don't require
+              user login
+            </li>
+            <li>
+              <strong>Server operations:</strong> Backend services managing tournament
+              data
+            </li>
+          </ul>
+
+          <h3>Security Notes:</h3>
+          <ul>
+            <li>
+              🔒 <strong>Keep your client secret private</strong> - Never commit it
+              to version control
+            </li>
+            <li>
+              🔐 Credentials are stored in your browser's localStorage (not sent to
+              any server)
+            </li>
+            <li>
+              ⚠️ Only use on <strong>trusted devices</strong> - Clear credentials
+              when done
+            </li>
+            <li>
+              🔄 Tokens expire automatically - Use the refresh button to get a new
+              one
+            </li>
+          </ul>
+
+          <h3>Differences from regular OAuth:</h3>
+          <ul>
+            <li>
+              <strong>No user interaction:</strong> Authentication happens
+              automatically
+            </li>
+            <li>
+              <strong>Uses client secret:</strong> Requires both client ID and secret
+            </li>
+            <li>
+              <strong>Limited scopes:</strong> Only works with application:* scopes
+            </li>
+            <li>
+              <strong>Direct token:</strong> No authorization code exchange needed
+            </li>
+          </ul>
+        </div>
+      </div>
+
+      <!-- Delete Confirmation Modal -->
+      <div
+        v-if="showDeleteConfirm"
+        class="modal-overlay"
+        @click="showDeleteConfirm = false"
+      >
+        <div class="modal" @click.stop>
+          <h3>Delete Client Credentials?</h3>
+          <p>
+            Are you sure you want to clear the stored client credentials and access
+            token? You'll need to enter them again to use APPLICATION scope.
+          </p>
+          <div class="modal-buttons">
+            <button @click="showDeleteConfirm = false" class="btn btn-secondary">
+              Cancel
+            </button>
+            <button @click="handleDeleteCredentials" class="btn btn-danger">
+              Delete
+            </button>
+          </div>
+        </div>
+      </div>
+
+      <!-- Help Guide Modal -->
+      <div v-if="showGuide" class="modal-overlay" @click="showGuide = false">
+        <div class="modal modal-large" @click.stop>
+          <div class="modal-header">
+            <h3>How to Get Client Credentials</h3>
+            <button @click="showGuide = false" class="close-btn">✕</button>
+          </div>
+          <div class="modal-body">
+            <div class="guide-step">
+              <div class="step-number">1</div>
+              <div class="step-content">
+                <h4>Go to Challonge Developer Settings</h4>
+                <p>
+                  Visit
+                  <a
+                    href="https://challonge.com/settings/developer"
+                    target="_blank"
+                    rel="noopener"
+                  >
+                    https://challonge.com/settings/developer
+                  </a>
+                </p>
+              </div>
+            </div>
+
+            <div class="guide-step">
+              <div class="step-number">2</div>
+              <div class="step-content">
+                <h4>Create or Select Your OAuth Application</h4>
+                <p>
+                  If you don't have an application yet, click "Create New
+                  Application" and fill in the details.
+                </p>
+              </div>
+            </div>
+
+            <div class="guide-step">
+              <div class="step-number">3</div>
+              <div class="step-content">
+                <h4>Copy Your Client ID and Client Secret</h4>
+                <p>
+                  Your application page will show both the <strong>Client ID</strong>
+                  and <strong>Client Secret</strong>. Copy both values.
+                </p>
+                <p class="warning">
+                  ⚠️ <strong>Important:</strong> The client secret is only shown once.
+                  If you lose it, you'll need to regenerate it.
+                </p>
+              </div>
+            </div>
+
+            <div class="guide-step">
+              <div class="step-number">4</div>
+              <div class="step-content">
+                <h4>Paste Credentials Here</h4>
+                <p>
+                  Return to this page, paste both values, select your desired scope,
+                  and click "Save & Authenticate".
+                </p>
+              </div>
+            </div>
+
+            <div class="guide-step">
+              <div class="step-number">5</div>
+              <div class="step-content">
+                <h4>Start Using APPLICATION Scope</h4>
+                <p>
+                  Once authenticated, you can use the APPLICATION scope in the
+                  Challonge Test page to access all tournaments associated with your
+                  application.
+                </p>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup>
+import { ref } from 'vue';
+import { useChallongeClientCredentials } from '../composables/useChallongeClientCredentials.js';
+
+const {
+  hasCredentials,
+  maskedClientId,
+  isAuthenticated,
+  loading,
+  error,
+  tokenInfo,
+  saveCredentials,
+  clearCredentials,
+  authenticate,
+  refresh,
+  logout
+} = useChallongeClientCredentials();
+
+const inputClientId = ref('');
+const inputClientSecret = ref('');
+const selectedScope = ref('application:manage');
+const showPassword = ref(false);
+const showDeleteConfirm = ref(false);
+const showGuide = ref(false);
+const saving = ref(false);
+const successMessage = ref('');
+
+async function handleSaveCredentials() {
+  error.value = '';
+  successMessage.value = '';
+
+  // Validate input
+  if (!inputClientId.value.trim()) {
+    error.value = 'Please enter a Client ID';
+    return;
+  }
+
+  if (!inputClientSecret.value.trim()) {
+    error.value = 'Please enter a Client Secret';
+    return;
+  }
+
+  saving.value = true;
+
+  try {
+    // Save credentials
+    const success = saveCredentials(
+      inputClientId.value.trim(),
+      inputClientSecret.value.trim()
+    );
+
+    if (!success) {
+      error.value = 'Failed to save credentials';
+      return;
+    }
+
+    // Authenticate immediately
+    await authenticate(selectedScope.value);
+
+    successMessage.value =
+      'Client credentials saved and authenticated successfully!';
+    inputClientId.value = '';
+    inputClientSecret.value = '';
+
+    setTimeout(() => {
+      successMessage.value = '';
+    }, 3000);
+  } catch (err) {
+    error.value = err.message || 'Authentication failed';
+  } finally {
+    saving.value = false;
+  }
+}
+
+async function handleAuthenticate() {
+  error.value = '';
+  successMessage.value = '';
+
+  try {
+    await authenticate(selectedScope.value);
+    successMessage.value = 'Authenticated successfully!';
+    setTimeout(() => {
+      successMessage.value = '';
+    }, 3000);
+  } catch (err) {
+    error.value = err.message || 'Authentication failed';
+  }
+}
+
+async function handleRefresh() {
+  error.value = '';
+  successMessage.value = '';
+
+  try {
+    await refresh(selectedScope.value);
+    successMessage.value = 'Token refreshed successfully!';
+    setTimeout(() => {
+      successMessage.value = '';
+    }, 3000);
+  } catch (err) {
+    error.value = err.message || 'Token refresh failed';
+  }
+}
+
+function handleLogout() {
+  logout();
+  successMessage.value = 'Logged out successfully (credentials retained)';
+  setTimeout(() => {
+    successMessage.value = '';
+  }, 3000);
+}
+
+function handleDeleteCredentials() {
+  const success = clearCredentials();
+  if (success) {
+    showDeleteConfirm.value = false;
+    inputClientId.value = '';
+    inputClientSecret.value = '';
+    successMessage.value = 'Client credentials cleared successfully';
+    setTimeout(() => {
+      successMessage.value = '';
+    }, 3000);
+  } else {
+    error.value = 'Failed to clear client credentials';
+  }
+}
+</script>
+
+<style scoped>
+.client-credentials-manager {
+  min-height: 100vh;
+  padding: 2rem 1rem;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+}
+
+.container {
+  max-width: 900px;
+  margin: 0 auto;
+  background: white;
+  border-radius: 12px;
+  padding: 2rem;
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
+}
+
+.header {
+  display: flex;
+  align-items: center;
+  gap: 1rem;
+  margin-bottom: 1rem;
+  flex-wrap: wrap;
+}
+
+.back-button {
+  padding: 0.5rem 1rem;
+  background: #667eea;
+  color: white;
+  text-decoration: none;
+  border-radius: 6px;
+  font-weight: 600;
+  transition: all 0.3s ease;
+}
+
+.back-button:hover {
+  background: #5568d3;
+  transform: translateX(-2px);
+}
+
+h1 {
+  color: #333;
+  margin: 0;
+  font-size: 2rem;
+}
+
+.section {
+  margin: 2rem 0;
+  padding: 1.5rem;
+  background: #f8f9fa;
+  border-radius: 8px;
+  border: 1px solid #e9ecef;
+}
+
+.section-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 1rem;
+}
+
+.help-btn {
+  padding: 0.5rem 1rem;
+  background: #fbbf24;
+  color: #78350f;
+  border: none;
+  border-radius: 6px;
+  font-weight: 600;
+  cursor: pointer;
+  transition: all 0.3s ease;
+}
+
+.help-btn:hover {
+  background: #f59e0b;
+  transform: scale(1.05);
+}
+
+h2 {
+  color: #495057;
+  margin: 0 0 1rem 0;
+  font-size: 1.5rem;
+}
+
+.status {
+  display: flex;
+  gap: 1rem;
+  padding: 1.5rem;
+  border-radius: 8px;
+  align-items: flex-start;
+}
+
+.status.success {
+  background: #d1fae5;
+  border-left: 4px solid #10b981;
+}
+
+.status.warning {
+  background: #fef3c7;
+  border-left: 4px solid #fbbf24;
+}
+
+.status-icon {
+  font-size: 2rem;
+}
+
+.status-content {
+  flex: 1;
+}
+
+.status-content p {
+  margin: 0.5rem 0;
+}
+
+.credentials-display {
+  font-family: 'Courier New', monospace;
+  color: #667eea;
+  font-weight: 600;
+}
+
+.token-info {
+  font-size: 0.9rem;
+  color: #666;
+  font-style: italic;
+}
+
+.button-group {
+  display: flex;
+  gap: 0.5rem;
+  margin-top: 1rem;
+  flex-wrap: wrap;
+}
+
+.form-group {
+  margin-bottom: 1.5rem;
+}
+
+.form-group label {
+  display: block;
+  font-weight: 600;
+  color: #495057;
+  margin-bottom: 0.5rem;
+}
+
+.form-input {
+  width: 100%;
+  padding: 0.75rem;
+  border: 2px solid #dee2e6;
+  border-radius: 6px;
+  font-size: 1rem;
+  transition: all 0.3s ease;
+}
+
+.form-input:focus {
+  outline: none;
+  border-color: #667eea;
+  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
+}
+
+.input-wrapper {
+  position: relative;
+}
+
+.toggle-password {
+  position: absolute;
+  right: 0.75rem;
+  top: 50%;
+  transform: translateY(-50%);
+  background: none;
+  border: none;
+  font-size: 1.2rem;
+  cursor: pointer;
+  padding: 0.25rem;
+}
+
+.help-text {
+  font-size: 0.875rem;
+  color: #6c757d;
+  margin-top: 0.5rem;
+}
+
+.btn {
+  padding: 0.75rem 1.5rem;
+  font-size: 1rem;
+  font-weight: 600;
+  border: none;
+  border-radius: 6px;
+  cursor: pointer;
+  transition: all 0.3s ease;
+}
+
+.btn-primary {
+  background: #667eea;
+  color: white;
+}
+
+.btn-primary:hover:not(:disabled) {
+  background: #5568d3;
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
+}
+
+.btn-secondary {
+  background: #6c757d;
+  color: white;
+}
+
+.btn-secondary:hover {
+  background: #5a6268;
+}
+
+.btn-danger {
+  background: #dc3545;
+  color: white;
+}
+
+.btn-danger:hover {
+  background: #c82333;
+}
+
+.btn:disabled {
+  opacity: 0.6;
+  cursor: not-allowed;
+}
+
+.error-message {
+  padding: 1rem;
+  background: #fee;
+  color: #c33;
+  border-radius: 6px;
+  border-left: 4px solid #c33;
+  margin: 1rem 0;
+}
+
+.success-message {
+  padding: 1rem;
+  background: #d1fae5;
+  color: #065f46;
+  border-radius: 6px;
+  border-left: 4px solid #10b981;
+  margin: 1rem 0;
+}
+
+.info-section {
+  background: linear-gradient(135deg, #e7f3ff 0%, #dbeafe 100%);
+  border: 2px solid #0284c7;
+}
+
+.info-content h3 {
+  color: #0c4a6e;
+  margin-top: 1.5rem;
+  margin-bottom: 0.75rem;
+}
+
+.info-content ul {
+  margin: 0.5rem 0;
+  padding-left: 1.5rem;
+}
+
+.info-content li {
+  margin: 0.5rem 0;
+  line-height: 1.6;
+}
+
+/* Modal Styles */
+.modal-overlay {
+  position: fixed;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(0, 0, 0, 0.5);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+  padding: 1rem;
+}
+
+.modal {
+  background: white;
+  border-radius: 12px;
+  padding: 2rem;
+  max-width: 500px;
+  width: 100%;
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
+}
+
+.modal-large {
+  max-width: 700px;
+}
+
+.modal-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 1.5rem;
+}
+
+.modal-header h3 {
+  margin: 0;
+  color: #333;
+}
+
+.close-btn {
+  background: none;
+  border: none;
+  font-size: 1.5rem;
+  cursor: pointer;
+  color: #999;
+  padding: 0;
+  width: 32px;
+  height: 32px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  border-radius: 4px;
+  transition: all 0.2s ease;
+}
+
+.close-btn:hover {
+  background: #f0f0f0;
+  color: #333;
+}
+
+.modal h3 {
+  color: #333;
+  margin-bottom: 1rem;
+}
+
+.modal p {
+  color: #666;
+  line-height: 1.6;
+  margin-bottom: 1.5rem;
+}
+
+.modal-buttons {
+  display: flex;
+  gap: 1rem;
+  justify-content: flex-end;
+}
+
+.modal-body {
+  max-height: 60vh;
+  overflow-y: auto;
+}
+
+.guide-step {
+  display: flex;
+  gap: 1rem;
+  margin-bottom: 1.5rem;
+  padding-bottom: 1.5rem;
+  border-bottom: 1px solid #e9ecef;
+}
+
+.guide-step:last-child {
+  border-bottom: none;
+  margin-bottom: 0;
+  padding-bottom: 0;
+}
+
+.step-number {
+  flex-shrink: 0;
+  width: 40px;
+  height: 40px;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: white;
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-weight: 700;
+  font-size: 1.2rem;
+}
+
+.step-content h4 {
+  margin: 0 0 0.5rem 0;
+  color: #333;
+}
+
+.step-content p {
+  margin: 0.5rem 0;
+  color: #666;
+  line-height: 1.6;
+}
+
+.step-content a {
+  color: #667eea;
+  text-decoration: none;
+  font-weight: 600;
+  border-bottom: 1px solid #667eea;
+}
+
+.step-content a:hover {
+  color: #5568d3;
+  border-bottom-color: #5568d3;
+}
+
+.step-content .warning {
+  background: #fef3c7;
+  padding: 0.75rem;
+  border-radius: 6px;
+  border-left: 3px solid #fbbf24;
+  margin-top: 0.5rem;
+}
+
+@media (max-width: 768px) {
+  h1 {
+    font-size: 1.5rem;
+  }
+
+  .button-group {
+    flex-direction: column;
+  }
+
+  .btn {
+    width: 100%;
+  }
+}
+</style>