Fix clipboard on OSX, build-all and unicode support

frontend/src/js/app.js

@@ -483,6 +483,23 @@ class App {
             return;
         }
 
+        const existingSessions = this.state.getAllSessions().filter((session) => {
+            if (session.profileId !== profileId) return false;
+            return session.state === 'connected' || session.state === 'connecting' || session.state === 'reconnecting';
+        });
+        if (existingSessions.length > 0) {
+            const preferred = existingSessions.find((s) => s.id === this.state.activeSessionId) || existingSessions[0];
+            const decision = await this._confirmReuseSession(profile, preferred);
+            if (decision === 'existing') {
+                this.tabs.setActive(preferred.id);
+                if (preferred.protocol !== 'raw' && preferred.protocol !== 'github') {
+                    this.terminals.focusTerminal(preferred.id);
+                }
+                return;
+            }
+            if (decision !== 'new') return;
+        }
+
         try {
             const sessionInfo = await window.go.api.Service.ConnectSession(profileId);
             this.state.addSession(sessionInfo);
@@ -628,6 +645,60 @@ class App {
         }
     }
 
+    /**
+     * Prompts to reuse an existing session for a profile.
+     * @param {Object} profile
+     * @param {Object} session
+     * @returns {Promise<'existing'|'new'|null>}
+     * @private
+     */
+    _confirmReuseSession(profile, session) {
+        const createElement = window.NexusTerminal.createElement;
+        const label = (profile.displayName || profile.host || 'Untitled').trim();
+        const stateLabel = session.state === 'connected' ? 'connected' : 'connecting';
+
+        return new Promise((resolve) => {
+            const backdrop = createElement('div', 'modal-backdrop');
+            const modal = createElement('div', 'modal modal-sm');
+            modal.innerHTML = `
+                <div class="modal-header">
+                    <h3 class="modal-title">Connection Already Open</h3>
+                    <button class="btn btn-icon btn-xs modal-close">&times;</button>
+                </div>
+                <div class="modal-body">
+                    <p style="font-size:var(--text-sm);color:var(--text-secondary)">
+                        <strong>${label}</strong> is already ${stateLabel}.
+                        Do you want to use the existing session or open a new one?
+                    </p>
+                </div>
+                <div class="modal-footer">
+                    <button class="btn btn-sm confirm-cancel">Cancel</button>
+                    <button class="btn btn-sm confirm-new">New Connection</button>
+                    <button class="btn btn-sm btn-primary confirm-ok">Use Existing</button>
+                </div>
+            `;
+            backdrop.appendChild(modal);
+            document.body.appendChild(backdrop);
+            requestAnimationFrame(() => {
+                backdrop.classList.add('is-visible');
+                modal.classList.add('is-visible');
+            });
+
+            const close = (val) => {
+                backdrop.classList.remove('is-visible');
+                modal.classList.remove('is-visible');
+                setTimeout(() => backdrop.remove(), 200);
+                resolve(val);
+            };
+
+            modal.querySelector('.modal-close').addEventListener('click', () => close(null));
+            modal.querySelector('.confirm-cancel').addEventListener('click', () => close(null));
+            modal.querySelector('.confirm-ok').addEventListener('click', () => close('existing'));
+            modal.querySelector('.confirm-new').addEventListener('click', () => close('new'));
+            backdrop.addEventListener('click', (e) => { if (e.target === backdrop) close(null); });
+        });
+    }
+
     // ── Import / Export ──────────────────────────────────────────────
 
     /**

frontend/src/js/terminal.js

@@ -5,7 +5,7 @@
  * Handles data routing, resizing, and search.
  */
 
-/* global Terminal, FitAddon, SearchAddon, WebLinksAddon */
+/* global Terminal, FitAddon, SearchAddon, WebLinksAddon, Unicode11Addon */
 
 class TerminalManager {
     /**
@@ -36,7 +36,7 @@ class TerminalManager {
         const themeName = (this.app.state.preferences || {}).terminalTheme || 'charcoal';
         const term = new Terminal({
             theme: window.NexusTerminal.getTerminalTheme(themeName),
-            fontFamily: profile.terminalFontFamily || 'JetBrains Mono, Menlo, Monaco, Consolas, monospace',
+            fontFamily: profile.terminalFontFamily || 'JetBrains Mono, Menlo, Monaco, Consolas, "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", monospace',
             fontSize: profile.terminalFontSize || 14,
             scrollback: profile.terminalScrollback || 10000,
             cursorStyle: profile.terminalCursorStyle || 'block',
@@ -50,10 +50,19 @@ class TerminalManager {
         const fitAddon = new FitAddon.FitAddon();
         const searchAddon = new SearchAddon.SearchAddon();
         let webLinksAddon = null;
+        let unicode11Addon = null;
 
         term.loadAddon(fitAddon);
         term.loadAddon(searchAddon);
 
+        try {
+            unicode11Addon = new Unicode11Addon.Unicode11Addon();
+            term.loadAddon(unicode11Addon);
+            term.unicode.activeVersion = '11';
+        } catch (_) {
+            // Unicode 11 addon is optional; fall back to default unicode handling.
+        }
+
         // WebLinksAddon may not always be available
         try {
             webLinksAddon = new WebLinksAddon.WebLinksAddon((_event, uri) => {
@@ -68,6 +77,19 @@ class TerminalManager {
         const container = document.getElementById(containerId);
         term.open(container);
 
+        let suppressPasteEvent = false;
+        const attachPasteGuard = () => {
+            const inputEl = term.textarea || container.querySelector('textarea');
+            if (!inputEl) return;
+            inputEl.addEventListener('paste', (e) => {
+                if (!suppressPasteEvent) return;
+                e.preventDefault();
+                e.stopPropagation();
+                suppressPasteEvent = false;
+            });
+        };
+        attachPasteGuard();
+
         // Right-click context menu on the terminal viewport
         const termEl = container.querySelector('.xterm');
         if (termEl) {
@@ -131,6 +153,8 @@ class TerminalManager {
 
             // Cmd/Ctrl+V — paste from clipboard
             if (mod && e.key === 'v' && e.type === 'keydown') {
+                suppressPasteEvent = true;
+                setTimeout(() => { suppressPasteEvent = false; }, 250);
                 if (window.runtime && window.runtime.ClipboardGetText) {
                     window.runtime.ClipboardGetText().then(function(text) {
                         if (text) term.paste(text);