feat: clickable URLs in terminal — Ctrl/Cmd+Click opens in new tab

Loads xterm-addon-web-links (0.9.0) from CDN. URLs in terminal output
are auto-detected and underlined on hover. Ctrl+Click (Linux/Windows)
or Cmd+Click (macOS) opens the URL in a new browser tab. Plain click
preserved for normal terminal text selection.

muxplex/frontend/index.html

@@ -246,6 +246,7 @@
   <!-- ── Scripts ──────────────────────────────────────────────────────────── -->
   <script src="https://cdn.jsdelivr.net/npm/xterm@5.3.0/lib/xterm.js"></script>
   <script src="https://cdn.jsdelivr.net/npm/xterm-addon-fit@0.8.0/lib/xterm-addon-fit.js"></script>
+  <script src="https://cdn.jsdelivr.net/npm/xterm-addon-web-links@0.9.0/lib/xterm-addon-web-links.js"></script>
   <script src="/app.js" defer></script>
   <script src="/terminal.js" defer></script>
 </body>

muxplex/frontend/terminal.js

@@ -243,6 +243,18 @@ function createTerminal() {
 
   _fitAddon = new window.FitAddon.FitAddon();
   _term.loadAddon(_fitAddon);
+
+  // Clickable URLs — Ctrl+Click (Windows/Linux) or Cmd+Click (macOS) opens in new tab.
+  // xterm-addon-web-links auto-detects URLs and adds hover underlines.
+  // Plain click is preserved for normal terminal text selection.
+  var WebLinksAddon = window.WebLinksAddon && window.WebLinksAddon.WebLinksAddon;
+  if (WebLinksAddon) {
+    _term.loadAddon(new WebLinksAddon(function(event, uri) {
+      if (event.ctrlKey || event.metaKey) {
+        window.open(uri, '_blank');
+      }
+    }));
+  }
 }
 
 // ─── Open / close ─────────────────────────────────────────────────────────────

muxplex/frontend/tests/test_terminal.mjs

@@ -949,4 +949,16 @@ test('terminal.js registers OSC 52 handler for tmux clipboard bridge', () => {
   );
 });
 
+// --- Clickable URLs via xterm-addon-web-links ---
+
+test('terminal.js loads xterm-addon-web-links for clickable URLs', () => {
+  const source = fs.readFileSync(new URL('../terminal.js', import.meta.url), 'utf8');
+  assert.ok(source.includes('WebLinksAddon'), 'must reference WebLinksAddon');
+  assert.ok(
+    source.includes('ctrlKey') || source.includes('metaKey'),
+    'must check modifier key for link clicks',
+  );
+  assert.ok(source.includes('window.open'), 'must open URLs in new tab');
+});
+
 

muxplex/tests/test_frontend_html.py

@@ -1325,3 +1325,21 @@ def test_html_display_panel_no_view_scope() -> None:
     assert el is None, (
         "#setting-view-scope must NOT be in the display panel (moved to Multi-Device tab)"
     )
+
+
+# ============================================================
+# Clickable URLs — xterm-addon-web-links (task: clickable URLs)
+# ============================================================
+
+
+def read_html() -> str:
+    """Read raw HTML content of index.html."""
+    return HTML_PATH.read_text()
+
+
+def test_html_loads_web_links_addon() -> None:
+    """index.html must load the xterm-addon-web-links CDN script."""
+    html = read_html()
+    assert "web-links" in html.lower() or "weblinks" in html.lower(), (
+        "Must load xterm-addon-web-links from CDN"
+    )