feat(session-options): show the session's working folder with a copy button

src/web/public/index.html

@@ -1407,6 +1407,16 @@
                       <input type="text" id="modalSessionName" class="set-input" maxlength="128" placeholder="Auto (directory name)" onblur="app.saveSessionName()">
                     </div>
                   </div>
+                  <div class="set-row">
+                    <div class="set-row-text">
+                      <span class="set-row-label">Working folder</span>
+                      <span class="set-row-desc">Where this session's CLI runs, on the machine hosting Codeman.</span>
+                    </div>
+                    <div class="set-row-actions">
+                      <code id="modalSessionPath" class="set-static mono" style="word-break: break-all; user-select: all;"></code>
+                      <button type="button" class="btn-toolbar btn-sm" id="modalSessionPathCopy" onclick="app.copySessionPath()">Copy</button>
+                    </div>
+                  </div>
                   <div class="set-row set-row-block">
                     <div class="set-row-text">
                       <span class="set-row-label">Session color</span>

src/web/public/session-ui.js

@@ -2473,6 +2473,14 @@ Object.assign(CodemanApp.prototype, {
     if (tab) tab.classList.toggle('tab-show-detach', !!on);
   },
 
+  /** Copy the open session's working folder (Session Options > Session > Working folder). */
+  async copySessionPath() {
+    const session = this.sessions.get(this.editingSessionId);
+    if (!session?.workingDir) return;
+    const ok = await this._copyText(session.workingDir);
+    this.showToast(ok ? 'Path copied' : 'Copy failed', ok ? 'success' : 'error');
+  },
+
   openSessionOptions(sessionId) {
     const session = this.sessions.get(sessionId);
     if (!session) return;
@@ -2552,6 +2560,12 @@ Object.assign(CodemanApp.prototype, {
       document.getElementById('modalSessionName').placeholder = 'Auto (directory name)';
     }
 
+    // Working folder: the path the CLI was launched in on the Codeman host
+    const _pathEl = document.getElementById('modalSessionPath');
+    _pathEl.textContent = session.workingDir || '';
+    _pathEl.title = session.workingDir || '';
+    document.getElementById('modalSessionPathCopy').disabled = !session.workingDir;
+
     // Initialize color picker with current session color
     const currentColor = session.color || 'default';
     const colorPicker = document.getElementById('sessionColorPicker');