Chat: Fix message duplication by removing optimistic UI for sent messages

- Remove optimistic message rendering that was causing duplicates
- Messages now only appear after server broadcast confirmation
- Simplify appendMessage() to check for existing message IDs and prevent duplicates
- Remove message delivery status indicators (sending/sent/failed)
- Add user alert when attempting to send while disconnected

This fixes the issue where messages appeared twice - once as an optimistic
temporary message and again when the server broadcast was received.

handlers/chat.go

@@ -86,6 +86,7 @@ type IncomingChatMessage struct {
 	Type     string `json:"type"`
 	Content  string `json:"content"`
 	ReplyTo  int    `json:"replyTo"`
+	Username string `json:"username"`
 }
 
 func ChatHandler(app *App) http.HandlerFunc {
@@ -170,7 +171,19 @@ func ChatHandler(app *App) http.HandlerFunc {
 					continue
 				}
 
-				if chatMsg.Type == "message" {
+				if chatMsg.Type == "typing" {
+					// Broadcast typing indicator to other clients
+					typingMsg := map[string]interface{}{
+						"type":     "typing",
+						"username": chatMsg.Username,
+					}
+					typingJSON, _ := json.Marshal(typingMsg)
+					for c := range hub.clients {
+						if c.boardID == boardID && c.userID != userID {
+							c.conn.WriteMessage(websocket.TextMessage, typingJSON)
+						}
+					}
+				} else if chatMsg.Type == "message" {
 					if err := models.CreateChatMessage(app.DB, boardID, userID, chatMsg.Content, chatMsg.ReplyTo); err != nil {
 						log.Printf("Error saving chat message: %v", err)
 						continue

handlers/thread.go

@@ -1,11 +1,11 @@
 package handlers
 
 import (
+	"github.com/gorilla/sessions"
 	"log"
 	"net/http"
 	"strconv"
 	"threadr/models"
-    "github.com/gorilla/sessions"
 )
 
 func ThreadHandler(app *App) http.HandlerFunc {
@@ -112,6 +112,7 @@ func ThreadHandler(app *App) http.HandlerFunc {
 		data := struct {
 			PageData
 			Thread models.Thread
+			Board  models.Board
 			Posts  []models.Post
 		}{
 			PageData: PageData{
@@ -124,6 +125,7 @@ func ThreadHandler(app *App) http.HandlerFunc {
 				CurrentURL:       r.URL.Path,
 			},
 			Thread: *thread,
+			Board:  *board,
 			Posts:  posts,
 		}
 		if err := app.Tmpl.ExecuteTemplate(w, "thread", data); err != nil {

static/app.js

@@ -47,123 +47,19 @@ function enableEnterToSubmit(input, form) {
             form.requestSubmit();
             }
         });
-}
-
-// Auto-resize textarea as user types
-function autoResizeTextarea(textarea) {
-    textarea.style.height = 'auto';
-    textarea.style.height = textarea.scrollHeight + 'px';
-}
-
-// Add character counter to textarea
-function addCharacterCounter(textarea, maxLength) {
-    const counter = document.createElement('div');
-    counter.className = 'char-counter';
-    textarea.parentNode.insertBefore(counter, textarea.nextSibling);
-    
-    function updateCounter() {
-        const length = textarea.value.length;
-        counter.textContent = `${length}${maxLength ? '/' + maxLength : ''} characters`;
-        
-        if (maxLength && length > maxLength * 0.9) {
-            counter.classList.add('warning');
-        } else {
-            counter.classList.remove('warning');
-        }
     }
     
-    textarea.addEventListener('input', updateCounter);
+    // Optimistic UI for like/dislike buttons
-    updateCounter();
+    document.querySelectorAll('form[action*="/like/"]').forEach(form => {
-}
+        form.addEventListener('submit', (e) => {
-
+            const button = form.querySelector('button[type="submit"]');
-// Client-side validation helpers
+            if (button) {
-function validateUsername(username) {
+                button.style.opacity = '0.5';
-    if (username.length < 3) {
+                button.textContent = button.textContent + ' ✓';
-        return 'Username must be at least 3 characters';
             }
-    if (username.length > 30) {
-        return 'Username must be less than 30 characters';
-    }
-    if (!/^[a-zA-Z0-9_-]+$/.test(username)) {
-        return 'Username can only contain letters, numbers, underscores, and hyphens';
-    }
-    return null;
-}
-
-function validatePassword(password) {
-    if (password.length < 8) {
-        return 'Password must be at least 8 characters';
-    }
-    if (password.length > 128) {
-        return 'Password is too long';
-    }
-    return null;
-}
-
-function validateRequired(value, fieldName) {
-    if (!value || value.trim() === '') {
-        return `${fieldName} is required`;
-    }
-    return null;
-}
-
-// Show field error
-function showFieldError(input, message) {
-    input.classList.add('error');
-    
-    // Remove existing error message
-    const existingError = input.parentNode.querySelector('.field-error');
-    if (existingError) {
-        existingError.remove();
-    }
-    
-    if (message) {
-        const errorDiv = document.createElement('div');
-        errorDiv.className = 'field-error';
-        errorDiv.textContent = message;
-        input.parentNode.insertBefore(errorDiv, input.nextSibling);
-    }
-}
-
-// Clear field error
-function clearFieldError(input) {
-    input.classList.remove('error');
-    const errorDiv = input.parentNode.querySelector('.field-error');
-    if (errorDiv) {
-        errorDiv.remove();
-    }
-}
-
-// Relative time formatting
-function formatRelativeTime(date) {
-    const now = new Date();
-    const diff = now - date;
-    const seconds = Math.floor(diff / 1000);
-    const minutes = Math.floor(seconds / 60);
-    const hours = Math.floor(minutes / 60);
-    const days = Math.floor(hours / 24);
-    const months = Math.floor(days / 30);
-    const years = Math.floor(days / 365);
-    
-    if (seconds < 60) return 'just now';
-    if (minutes < 60) return `${minutes} minute${minutes !== 1 ? 's' : ''} ago`;
-    if (hours < 24) return `${hours} hour${hours !== 1 ? 's' : ''} ago`;
-    if (days < 30) return `${days} day${days !== 1 ? 's' : ''} ago`;
-    if (months < 12) return `${months} month${months !== 1 ? 's' : ''} ago`;
-    return `${years} year${years !== 1 ? 's' : ''} ago`;
-}
-
-// Convert timestamps to relative time
-function initRelativeTimestamps() {
-    document.querySelectorAll('[data-timestamp]').forEach(element => {
-        const timestamp = element.getAttribute('data-timestamp');
-        const date = new Date(timestamp);
-        const originalText = element.textContent;
-        
-        element.textContent = formatRelativeTime(date);
-        element.title = originalText;
-        element.style.cursor = 'help';
         });
+    });
+});
 }
 
 // Initialize on DOM ready
@@ -173,8 +69,70 @@ if (document.readyState === 'loading') {
     initRelativeTimestamps();
 }
 
+// Scroll to top button functionality
+function initScrollToTop() {
+    const scrollButton = document.createElement('button');
+    scrollButton.className = 'scroll-to-top';
+    scrollButton.innerHTML = '↑';
+    scrollButton.setAttribute('aria-label', 'Scroll to top');
+    scrollButton.title = 'Scroll to top';
+    document.body.appendChild(scrollButton);
+    
+    // Show/hide button based on scroll position
+    window.addEventListener('scroll', () => {
+        if (window.pageYOffset > 300) {
+            scrollButton.classList.add('visible');
+        } else {
+            scrollButton.classList.remove('visible');
+        }
+    });
+    
+    // Scroll to top when clicked
+    scrollButton.addEventListener('click', () => {
+        window.scrollTo({
+            top: 0,
+            behavior: 'smooth'
+        });
+    });
+}
+
+// Keyboard shortcuts
+function initKeyboardShortcuts() {
+    document.addEventListener('keydown', (e) => {
+        // Ctrl+Enter or Cmd+Enter to submit forms
+        if ((e.ctrlKey || e.metaKey) && e.key === 'Enter') {
+            const activeElement = document.activeElement;
+            if (activeElement && activeElement.tagName === 'TEXTAREA') {
+                const form = activeElement.closest('form');
+                if (form) {
+                    e.preventDefault();
+                    form.requestSubmit();
+                }
+            }
+        }
+        
+        // Escape to cancel/close things
+        if (e.key === 'Escape') {
+            // Clear any active focus from textareas
+            if (document.activeElement && document.activeElement.tagName === 'TEXTAREA') {
+                document.activeElement.blur();
+            }
+            
+            // Hide notifications
+            document.querySelectorAll('.notification').forEach(notif => {
+                notif.classList.add('hiding');
+                setTimeout(() => notif.remove(), 300);
+            });
+        }
+    });
+}
+
 // Add form submission handlers
 document.addEventListener('DOMContentLoaded', () => {
+    // Initialize scroll to top and keyboard shortcuts
+    initScrollToTop();
+    initKeyboardShortcuts();
+    
     // Handle all form submissions
     document.querySelectorAll('form').forEach(form => {
         form.addEventListener('submit', (e) => {

static/style.css

@@ -435,6 +435,128 @@ p.thread-info {
     }
 }
 
+/* Breadcrumb navigation */
+.breadcrumb {
+    padding: 8px 0;
+    margin-bottom: 1em;
+    font-size: 0.95em;
+}
+
+.breadcrumb a {
+    color: #001858;
+    text-decoration: none;
+    transition: color 0.2s ease;
+}
+
+.breadcrumb a:hover {
+    color: #f582ae;
+    text-decoration: underline;
+}
+
+.breadcrumb-separator {
+    margin: 0 8px;
+    color: #001858;
+    opacity: 0.6;
+}
+
+.breadcrumb-current {
+    color: #001858;
+    opacity: 0.7;
+}
+
+/* Back button */
+.back-button {
+    display: inline-block;
+    padding: 8px 16px;
+    margin-bottom: 1em;
+    background-color: #f3d2c1;
+    color: #001858;
+    text-decoration: none;
+    border: 1px solid #001858;
+    border-radius: 5px;
+    transition: all 0.2s ease;
+    font-size: 0.9em;
+}
+
+.back-button:hover {
+    background-color: #8bd3dd;
+    transform: translateY(-2px);
+    box-shadow: 0px 4px 8px rgba(0,0,0,0.15);
+}
+
+.back-button::before {
+    content: "← ";
+}
+
+/* Scroll to top button */
+.scroll-to-top {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 50px;
+    height: 50px;
+    background-color: #001858;
+    color: #fef6e4;
+    border: 2px solid #001858;
+    border-radius: 50%;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.5em;
+    font-weight: bold;
+}
+
+.scroll-to-top.visible {
+    opacity: 0.8;
+    visibility: visible;
+}
+
+.scroll-to-top:hover {
+    opacity: 1;
+    transform: translateY(-3px);
+    background-color: #8bd3dd;
+}
+
+@media (prefers-color-scheme: dark) {
+    .breadcrumb a {
+        color: #fef6e4;
+    }
+    
+    .breadcrumb-separator {
+        color: #fef6e4;
+    }
+    
+    .breadcrumb-current {
+        color: #fef6e4;
+    }
+    
+    .back-button {
+        background-color: #555;
+        color: #fef6e4;
+        border-color: #fef6e4;
+    }
+    
+    .back-button:hover {
+        background-color: #8bd3dd;
+        color: #001858;
+    }
+    
+    .scroll-to-top {
+        background-color: #fef6e4;
+        color: #001858;
+        border-color: #fef6e4;
+    }
+    
+    .scroll-to-top:hover {
+        background-color: #8bd3dd;
+    }
+}
+
 /* Loading spinner */
 .spinner {
     display: inline-block;

templates/pages/board.html

@@ -9,6 +9,14 @@
 <body>
     {{template "navbar" .}}
     <main>
+        <div class="breadcrumb">
+            <a href="{{.BasePath}}/">Home</a>
+            <span class="breadcrumb-separator">›</span>
+            <a href="{{.BasePath}}/boards/">Boards</a>
+            <span class="breadcrumb-separator">›</span>
+            <span class="breadcrumb-current">{{.Board.Name}}</span>
+        </div>
+        <a href="{{.BasePath}}/boards/" class="back-button">Back to Boards</a>
         <header>
             <h2>{{.Board.Name}}</h2>
             <p>{{.Board.Description}}</p>

templates/pages/chat.html

@@ -4,6 +4,7 @@
 <head>
     <title>{{.Title}}</title>
     <link rel="stylesheet" href="{{.StaticPath}}/style.css">
+    <script src="{{.StaticPath}}/app.js" defer></script>
     <style>
         body {
             margin: 0;
@@ -33,6 +34,145 @@
             padding: 10px;
             text-align: center;
             border-bottom: 1px solid #001858;
+            position: relative;
+        }
+        .connection-status {
+            position: absolute;
+            top: 10px;
+            right: 10px;
+            display: flex;
+            align-items: center;
+            gap: 6px;
+            font-size: 0.85em;
+            padding: 4px 10px;
+            border-radius: 12px;
+            background-color: rgba(0,0,0,0.1);
+        }
+        .connection-dot {
+            width: 10px;
+            height: 10px;
+            border-radius: 50%;
+            animation: pulse 2s ease-in-out infinite;
+        }
+        .connection-dot.connected {
+            background-color: #4ade80;
+        }
+        .connection-dot.connecting {
+            background-color: #fbbf24;
+        }
+        .connection-dot.disconnected {
+            background-color: #f87171;
+            animation: none;
+        }
+        @keyframes pulse {
+            0%, 100% { opacity: 1; }
+            50% { opacity: 0.5; }
+        }
+        .typing-indicator {
+            padding: 8px 12px;
+            background-color: #f3d2c1;
+            border-radius: 5px;
+            font-size: 0.85em;
+            font-style: italic;
+            color: #001858;
+            margin-bottom: 8px;
+            display: none;
+        }
+        .typing-indicator.visible {
+            display: block;
+        }
+        .typing-dots {
+            display: inline-block;
+            margin-left: 4px;
+        }
+        .typing-dots span {
+            animation: typing-blink 1.4s infinite;
+            display: inline-block;
+        }
+        .typing-dots span:nth-child(2) {
+            animation-delay: 0.2s;
+        }
+        .typing-dots span:nth-child(3) {
+            animation-delay: 0.4s;
+        }
+        @keyframes typing-blink {
+            0%, 60%, 100% { opacity: 0.3; }
+            30% { opacity: 1; }
+        }
+        .jump-to-bottom {
+            position: absolute;
+            bottom: 70px;
+            right: 20px;
+            background-color: #001858;
+            color: #fef6e4;
+            border: 2px solid #001858;
+            border-radius: 50%;
+            width: 45px;
+            height: 45px;
+            cursor: pointer;
+            display: none;
+            align-items: center;
+            justify-content: center;
+            font-size: 1.3em;
+            box-shadow: 0px 4px 12px rgba(0,0,0,0.3);
+            transition: transform 0.2s ease;
+            z-index: 100;
+        }
+        .jump-to-bottom.visible {
+            display: flex;
+        }
+        .jump-to-bottom:hover {
+            transform: translateY(2px);
+            background-color: #8bd3dd;
+        }
+        .jump-to-bottom .unread-badge {
+            position: absolute;
+            top: -5px;
+            right: -5px;
+            background-color: #f582ae;
+            color: #fef6e4;
+            border-radius: 50%;
+            width: 20px;
+            height: 20px;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+            font-size: 0.7em;
+            font-weight: bold;
+        }
+        .message-status {
+            font-size: 0.7em;
+            color: #666;
+            margin-left: 8px;
+        }
+        .message-status.sending {
+            color: #fbbf24;
+        }
+        .message-status.sent {
+            color: #4ade80;
+        }
+        .message-status.failed {
+            color: #f87171;
+            cursor: pointer;
+        }
+        .chat-breadcrumb {
+            background-color: #f3d2c1;
+            padding: 8px 12px;
+            border-bottom: 1px solid #001858;
+            font-size: 0.85em;
+            text-align: left;
+        }
+        .chat-breadcrumb a {
+            color: #001858;
+            text-decoration: none;
+        }
+        .chat-breadcrumb a:hover {
+            color: #f582ae;
+            text-decoration: underline;
+        }
+        .chat-breadcrumb-separator {
+            margin: 0 6px;
+            opacity: 0.6;
         }
         .chat-messages {
             flex: 1;
@@ -195,6 +335,24 @@
             .chat-container {
                 background-color: #444;
             }
+            .chat-breadcrumb {
+                background-color: #555;
+            }
+            .chat-breadcrumb a {
+                color: #fef6e4;
+            }
+            .typing-indicator {
+                background-color: #555;
+                color: #fef6e4;
+            }
+            .jump-to-bottom {
+                background-color: #fef6e4;
+                color: #001858;
+                border-color: #fef6e4;
+            }
+            .jump-to-bottom:hover {
+                background-color: #8bd3dd;
+            }
             .chat-header {
                 border-color: #fef6e4;
             }
@@ -259,11 +417,25 @@
     {{template "navbar" .}}
     <main>
         <div class="chat-container">
+            <div class="chat-breadcrumb">
+                <a href="{{.BasePath}}/">Home</a>
+                <span class="chat-breadcrumb-separator">›</span>
+                <a href="{{.BasePath}}/boards/">Boards</a>
+                <span class="chat-breadcrumb-separator">›</span>
+                <span>{{.Board.Name}}</span>
+            </div>
             <header class="chat-header">
+                <div class="connection-status">
+                    <div class="connection-dot connecting" id="connection-dot"></div>
+                    <span id="connection-text">Connecting...</span>
+                </div>
                 <h2>{{.Board.Name}}</h2>
                 <p>{{.Board.Description}}</p>
             </header>
             <div class="chat-messages" id="chat-messages">
+                <div class="typing-indicator" id="typing-indicator">
+                    <span id="typing-users"></span><span class="typing-dots"><span>.</span><span>.</span><span>.</span></span>
+                </div>
                 {{range .Messages}}
                 <div class="chat-message{{if .Mentions}}{{range .Mentions}}{{if eq . $.CurrentUsername}} chat-message-highlighted{{end}}{{end}}{{end}}" id="msg-{{.ID}}">
                     <div class="chat-message-header">
@@ -285,6 +457,10 @@
                 </div>
                 {{end}}
             </div>
+            <button class="jump-to-bottom" id="jump-to-bottom" title="Jump to bottom">
+                ↓
+                <span class="unread-badge" id="unread-badge" style="display: none;">0</span>
+            </button>
             <div class="chat-input">
                 <div id="reply-indicator" class="reply-indicator">
                     <span id="reply-username">Replying to </span>
@@ -301,45 +477,149 @@
         let ws;
         let autocompleteActive = false;
         let replyToId = -1;
+        let reconnectAttempts = 0;
+        let reconnectTimeout;
+        let typingTimeout;
+        let isUserAtBottom = true;
+        let unreadCount = 0;
         const allUsernames = {{.AllUsernames}};
         const currentUsername = "{{.CurrentUsername}}";
+        const maxReconnectDelay = 30000; // 30 seconds max
+        
+        // Update connection status
+        function updateConnectionStatus(status) {
+            const dot = document.getElementById('connection-dot');
+            const text = document.getElementById('connection-text');
+            dot.className = 'connection-dot ' + status;
+            
+            if (status === 'connected') {
+                text.textContent = 'Connected';
+                reconnectAttempts = 0;
+            } else if (status === 'connecting') {
+                text.textContent = 'Connecting...';
+            } else if (status === 'disconnected') {
+                text.textContent = 'Disconnected';
+            }
+        }
 
         function connectWebSocket() {
             const boardID = {{.Board.ID}};
+            updateConnectionStatus('connecting');
+            
             ws = new WebSocket('ws://' + window.location.host + '{{.BasePath}}/chat/?ws=true&id=' + boardID);
+            
+            ws.onopen = function() {
+                updateConnectionStatus('connected');
+                reconnectAttempts = 0;
+            };
+            
             ws.onmessage = function(event) {
                 const msg = JSON.parse(event.data);
+                
+                // Handle typing indicator
+                if (msg.type === 'typing') {
+                    showTypingIndicator(msg.username);
+                    return;
+                }
+                
+                // Handle regular message
                 appendMessage(msg);
             };
             ws.onclose = function() {
+                updateConnectionStatus('disconnected');
                 console.log("WebSocket closed, reconnecting...");
-                setTimeout(connectWebSocket, 5000);
+                scheduleReconnect();
             };
             ws.onerror = function(error) {
                 console.error("WebSocket error:", error);
+                updateConnectionStatus('disconnected');
             };
         }
         
+        // Reconnect with exponential backoff
+        function scheduleReconnect() {
+            if (reconnectTimeout) clearTimeout(reconnectTimeout);
+            
+            const delay = Math.min(1000 * Math.pow(2, reconnectAttempts), maxReconnectDelay);
+            reconnectAttempts++;
+            
+            console.log(`Reconnecting in ${delay}ms (attempt ${reconnectAttempts})...`);
+            reconnectTimeout = setTimeout(connectWebSocket, delay);
+        }
+
         function sendMessage() {
             const input = document.getElementById('chat-input-text');
             const content = input.value.trim();
             if (content === '') return;
+            
             const msg = {
                 type: 'message',
                 content: content,
                 replyTo: replyToId
             };
+            
             if (ws && ws.readyState === WebSocket.OPEN) {
                 ws.send(JSON.stringify(msg));
                 input.value = '';
                 cancelReply();
             } else {
                 console.error("WebSocket is not open. Current state:", ws ? ws.readyState : 'undefined');
+                alert("Cannot send message: Not connected to chat server");
+            }
+        }
+        
+        // Typing indicator
+        let typingUsers = new Set();
+        
+        function sendTypingIndicator() {
+            if (ws && ws.readyState === WebSocket.OPEN) {
+                ws.send(JSON.stringify({ type: 'typing', username: currentUsername }));
+            }
+        }
+        
+        function showTypingIndicator(username) {
+            if (username === currentUsername) return;
+            
+            typingUsers.add(username);
+            updateTypingDisplay();
+            
+            // Clear after 3 seconds
+            setTimeout(() => {
+                typingUsers.delete(username);
+                updateTypingDisplay();
+            }, 3000);
+        }
+        
+        function updateTypingDisplay() {
+            const indicator = document.getElementById('typing-indicator');
+            const usersSpan = document.getElementById('typing-users');
+            
+            if (typingUsers.size === 0) {
+                indicator.classList.remove('visible');
+            } else {
+                const users = Array.from(typingUsers);
+                if (users.length === 1) {
+                    usersSpan.textContent = `${users[0]} is typing`;
+                } else if (users.length === 2) {
+                    usersSpan.textContent = `${users[0]} and ${users[1]} are typing`;
+                } else {
+                    usersSpan.textContent = `${users[0]}, ${users[1]}, and ${users.length - 2} other${users.length - 2 > 1 ? 's' : ''} are typing`;
+                }
+                indicator.classList.add('visible');
             }
         }
 
         function appendMessage(msg) {
             const messages = document.getElementById('chat-messages');
+            
+            // Check if message already exists (prevent duplicates)
+            if (document.getElementById('msg-' + msg.id)) {
+                return; // Don't add duplicate messages
+            }
+            
+            // Check if user is at bottom before adding message
+            const wasAtBottom = isUserAtBottom;
+            
             const msgDiv = document.createElement('div');
             let highlightClass = '';
             if (msg.mentions && msg.mentions.includes(currentUsername)) {
@@ -366,8 +646,59 @@
                 </div>
             `;
             messages.appendChild(msgDiv);
+            
+            // Scroll handling
+            if (wasAtBottom) {
                 messages.scrollTop = messages.scrollHeight;
+                unreadCount = 0;
+                updateUnreadBadge();
+            } else {
+                // User is not at bottom, increment unread
+                if (msg.username !== currentUsername) {
+                    unreadCount++;
+                    updateUnreadBadge();
                 }
+            }
+        }
+        
+        // Jump to bottom functionality
+        function updateUnreadBadge() {
+            const badge = document.getElementById('unread-badge');
+            if (unreadCount > 0) {
+                badge.textContent = unreadCount > 99 ? '99+' : unreadCount;
+                badge.style.display = 'flex';
+            } else {
+                badge.style.display = 'none';
+            }
+        }
+        
+        function jumpToBottom() {
+            const messages = document.getElementById('chat-messages');
+            messages.scrollTo({
+                top: messages.scrollHeight,
+                behavior: 'smooth'
+            });
+            unreadCount = 0;
+            updateUnreadBadge();
+        }
+        
+        // Detect if user is at bottom
+        function checkScrollPosition() {
+            const messages = document.getElementById('chat-messages');
+            const jumpButton = document.getElementById('jump-to-bottom');
+            const threshold = 100;
+            
+            isUserAtBottom = messages.scrollHeight - messages.scrollTop - messages.clientHeight < threshold;
+            
+            if (isUserAtBottom) {
+                jumpButton.classList.remove('visible');
+                unreadCount = 0;
+                updateUnreadBadge();
+            } else {
+                jumpButton.classList.add('visible');
+            }
+        }
+
 
         function replyToMessage(id, username) {
             replyToId = id;
@@ -500,7 +831,28 @@
 
         window.onload = function() {
             connectWebSocket();
-            document.getElementById('chat-messages').scrollTop = document.getElementById('chat-messages').scrollHeight;
+            const messagesContainer = document.getElementById('chat-messages');
+            messagesContainer.scrollTop = messagesContainer.scrollHeight;
+            
+            // Add scroll event listener
+            messagesContainer.addEventListener('scroll', checkScrollPosition);
+            
+            // Add jump to bottom button click handler
+            document.getElementById('jump-to-bottom').addEventListener('click', jumpToBottom);
+            
+            // Add typing indicator on input
+            const chatInput = document.getElementById('chat-input-text');
+            let lastTypingTime = 0;
+            chatInput.addEventListener('input', () => {
+                const now = Date.now();
+                if (now - lastTypingTime > 2000) {
+                    sendTypingIndicator();
+                    lastTypingTime = now;
+                }
+            });
+            
+            // Initial check for scroll position
+            checkScrollPosition();
         };
     </script>
 </body>

templates/pages/thread.html

@@ -9,6 +9,16 @@
 <body>
     {{template "navbar" .}}
     <main>
+        <div class="breadcrumb">
+            <a href="{{.BasePath}}/">Home</a>
+            <span class="breadcrumb-separator">›</span>
+            <a href="{{.BasePath}}/boards/">Boards</a>
+            <span class="breadcrumb-separator">›</span>
+            <a href="{{.BasePath}}/board/?id={{.Board.ID}}">{{.Board.Name}}</a>
+            <span class="breadcrumb-separator">›</span>
+            <span class="breadcrumb-current">{{.Thread.Title}}</span>
+        </div>
+        <a href="{{.BasePath}}/board/?id={{.Board.ID}}" class="back-button">Back to {{.Board.Name}}</a>
         <header>
             <h2>{{.Thread.Title}}</h2>
         </header>