feat: Add mode selection interface for creator/joiner

**Motivations :**
- Improve user experience with clear role selection
- Add intuitive interface to choose between creator and joiner modes
- Provide easy navigation between modes

**Modifications :**
- Added mode selection screen with two main buttons
- Added back buttons to return to mode selection
- Enhanced CSS styling for mode buttons and navigation
- Added JavaScript logic for mode switching

**Pages affectées :**
- src/pages/home/home.html - Added mode selection interface
- src/pages/home/home.ts - Added mode selection logic
- src/4nk.css - Added styling for mode selection and back buttons

src/4nk.css

@@ -1080,3 +1080,119 @@ select[data-multi-select-plugin] {
 .custom-select::-webkit-scrollbar-thumb:hover {
   background: #555;
 }
+
+/* Mode Selection Styles */
+.mode-buttons {
+  display: flex;
+  gap: 20px;
+  margin: 20px 0;
+  flex-wrap: wrap;
+}
+
+.mode-btn {
+  flex: 1;
+  min-width: 250px;
+  display: flex;
+  align-items: center;
+  gap: 15px;
+  padding: 20px;
+  border: 2px solid transparent;
+  border-radius: 12px;
+  cursor: pointer;
+  transition: all 0.3s ease;
+  text-align: left;
+  background: white;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
+}
+
+.mode-btn:hover {
+  transform: translateY(-2px);
+  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
+}
+
+.mode-btn.primary-btn {
+  border-color: var(--primary-color);
+}
+
+.mode-btn.primary-btn:hover {
+  background: var(--primary-color);
+  color: white;
+}
+
+.mode-btn.secondary-btn {
+  border-color: var(--secondary-color);
+}
+
+.mode-btn.secondary-btn:hover {
+  background: var(--secondary-color);
+  color: white;
+}
+
+.mode-icon {
+  font-size: 32px;
+  flex-shrink: 0;
+}
+
+.mode-content h3 {
+  margin: 0 0 8px 0;
+  font-size: 18px;
+  font-weight: 600;
+  color: inherit;
+}
+
+.mode-content p {
+  margin: 0;
+  font-size: 14px;
+  color: #666;
+  line-height: 1.4;
+}
+
+.mode-btn:hover .mode-content p {
+  color: inherit;
+  opacity: 0.9;
+}
+
+/* Back Button Styles */
+.back-btn {
+  background: transparent;
+  border: 1px solid #ddd;
+  color: #666;
+  padding: 8px 16px;
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 14px;
+  transition: all 0.3s ease;
+  margin-top: 10px;
+}
+
+.back-btn:hover {
+  background: #f8f9fa;
+  border-color: var(--primary-color);
+  color: var(--primary-color);
+}
+
+.card-header {
+  position: relative;
+}
+
+.card-header .back-btn {
+  position: absolute;
+  top: 0;
+  right: 0;
+}
+
+/* Responsive Design for Mode Selection */
+@media (max-width: 768px) {
+  .mode-buttons {
+    flex-direction: column;
+  }
+
+  .mode-btn {
+    min-width: auto;
+  }
+
+  .card-header .back-btn {
+    position: static;
+    margin-top: 10px;
+  }
+}

src/pages/home/home.html

@@ -1,8 +1,35 @@
 <div class="pairing-container">
+  <!-- Mode Selection -->
+  <div id="mode-selection" class="card pairing-card">
+    <div class="card-header">
+      <h2>🔐 4NK Pairing</h2>
+      <p class="card-description">Choose your role in the pairing process</p>
+    </div>
+    
+    <div class="mode-buttons">
+      <button id="creator-mode-btn" class="mode-btn primary-btn">
+        <div class="mode-icon">🔐</div>
+        <div class="mode-content">
+          <h3>Create New Pairing</h3>
+          <p>Generate 4 words to share with another device</p>
+        </div>
+      </button>
+      
+      <button id="joiner-mode-btn" class="mode-btn secondary-btn">
+        <div class="mode-icon">🔗</div>
+        <div class="mode-content">
+          <h3>Join Existing Pairing</h3>
+          <p>Enter 4 words from another device</p>
+        </div>
+      </button>
+    </div>
+  </div>
+
   <!-- Creator Flow -->
   <div id="creator-flow" class="card pairing-card" style="display: none">
     <div class="card-header">
       <h2>🔐 Create New Pairing</h2>
+      <button id="back-to-mode-creator" class="back-btn">← Back to Mode Selection</button>
     </div>
 
     <div class="pairing-request"></div>
@@ -28,6 +55,7 @@
     <div class="card-header">
       <h2>🔗 Join Existing Pairing</h2>
       <p class="card-description">Enter the 4 words from the creator device</p>
+      <button id="back-to-mode-joiner" class="back-btn">← Back to Mode Selection</button>
     </div>
 
     <div class="input-container">

src/pages/home/home.ts

@@ -118,6 +118,9 @@ export async function initHomePage(): Promise<void> {
   // Set up iframe pairing button listeners
   setupIframePairingButtons();
 
+  // Set up mode selection
+  setupModeSelection();
+
   const container = getCorrectDOM('login-4nk-component') as HTMLElement;
   container.querySelectorAll('.tab').forEach(tab => {
     addSubscription(tab, 'click', () => {
@@ -513,3 +516,66 @@ export function setupIframePairingButtons() {
     });
   }
 }
+
+// Mode Selection Functions
+export function setupModeSelection(): void {
+  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
+  
+  // Mode selection buttons
+  const creatorModeBtn = container.querySelector('#creator-mode-btn') as HTMLButtonElement;
+  const joinerModeBtn = container.querySelector('#joiner-mode-btn') as HTMLButtonElement;
+  
+  // Back buttons
+  const backToModeCreator = container.querySelector('#back-to-mode-creator') as HTMLButtonElement;
+  const backToModeJoiner = container.querySelector('#back-to-mode-joiner') as HTMLButtonElement;
+  
+  if (creatorModeBtn) {
+    creatorModeBtn.addEventListener('click', () => {
+      showMode('creator');
+    });
+  }
+  
+  if (joinerModeBtn) {
+    joinerModeBtn.addEventListener('click', () => {
+      showMode('joiner');
+    });
+  }
+  
+  if (backToModeCreator) {
+    backToModeCreator.addEventListener('click', () => {
+      showMode('selection');
+    });
+  }
+  
+  if (backToModeJoiner) {
+    backToModeJoiner.addEventListener('click', () => {
+      showMode('selection');
+    });
+  }
+}
+
+function showMode(mode: 'selection' | 'creator' | 'joiner'): void {
+  const container = getCorrectDOM('login-4nk-component') as HTMLElement;
+  
+  const modeSelection = container.querySelector('#mode-selection') as HTMLElement;
+  const creatorFlow = container.querySelector('#creator-flow') as HTMLElement;
+  const joinerFlow = container.querySelector('#joiner-flow') as HTMLElement;
+  
+  // Hide all flows
+  if (modeSelection) modeSelection.style.display = 'none';
+  if (creatorFlow) creatorFlow.style.display = 'none';
+  if (joinerFlow) joinerFlow.style.display = 'none';
+  
+  // Show selected flow
+  switch (mode) {
+    case 'selection':
+      if (modeSelection) modeSelection.style.display = 'block';
+      break;
+    case 'creator':
+      if (creatorFlow) creatorFlow.style.display = 'block';
+      break;
+    case 'joiner':
+      if (joinerFlow) joinerFlow.style.display = 'block';
+      break;
+  }
+}

src/services/service.ts

@@ -523,14 +523,14 @@ export default class Services {
 
   private getRelayReadyPromise(): Promise<void> {
     console.log('🔍 DEBUG: getRelayReadyPromise called, promise exists:', !!this.relayReadyPromise);
-    
+
     // If we already have a relay with spAddress, return resolved promise
     const hasRelayWithAddress = Object.values(this.relayAddresses).some(address => address && address.trim() !== '');
     if (hasRelayWithAddress) {
       console.log('🔍 DEBUG: Relay already ready with spAddress, returning resolved promise');
       return Promise.resolve();
     }
-    
+
     if (!this.relayReadyPromise) {
       console.log('🔍 DEBUG: Creating new relay ready promise');
       this.relayReadyPromise = new Promise<void>(resolve => {