發佈 0.1.7：新增會話模式開關（獨立／共用）

摘要：
bot 設定新增「會話模式」：預設各聊天室獨立會話；可切為所有聊天室
共用一條記憶（單一專案助理情境）。共用模式下 /new 清除全部記憶，
/status 會顯示目前模式，bot 列表小字標示「共用會話」。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/web/public/index.html

@@ -219,6 +219,14 @@
       <select id="f-effort"></select>
       <div class="hint">速度固定為 Fast（1.5x）</div>
     </div>
+    <div class="field">
+      <label>會話模式</label>
+      <select id="f-session">
+        <option value="per-chat" selected>各聊天室獨立（私訊、每個群組各自記憶）</option>
+        <option value="shared">所有聊天室共用（同一條記憶，適合單一專案助理）</option>
+      </select>
+      <div class="hint">共用模式下 /new 會清掉所有聊天室的記憶</div>
+    </div>
     <div class="field">
       <label>逾時（分鐘）</label>
       <input id="f-timeout" type="number" value="30" min="1">
@@ -374,8 +382,8 @@ function renderBots(bots) {
       '<td>' + statusBadge(b.status) + '</td>' +
       '<td><span class="mono" title="' + esc(b.workDir) + '">' + esc(shortPath(b.workDir)) + '</span></td>' +
       '<td class="mono">' + esc(b.sandbox || '-') +
-        ((b.model || b.reasoningEffort)
-          ? '<br><span class="script-name">' + esc([b.model, b.reasoningEffort].filter(Boolean).join(' / ')) + '</span>'
+        ((b.model || b.reasoningEffort || b.sharedSession)
+          ? '<br><span class="script-name">' + esc([b.model, b.reasoningEffort, b.sharedSession ? '共用會話' : ''].filter(Boolean).join(' / ')) + '</span>'
           : '') + '</td>' +
       '<td class="mono">' + esc(b.tokenMasked || '-') + '</td>' +
       '<td>' + fmtBytes(b.memory) + '</td>' +
@@ -444,6 +452,7 @@ function openCreate() {
   document.getElementById('f-workdir').value = '';
   document.getElementById('f-sandbox').value = 'workspace-write';
   populateModelSelects('', '');
+  document.getElementById('f-session').value = 'per-chat';
   document.getElementById('f-timeout').value = '30';
   document.getElementById('f-autostart-wrap').style.display = '';
   document.getElementById('f-autostart').checked = true;
@@ -465,6 +474,7 @@ function openEdit(name) {
   document.getElementById('f-workdir').value = b.workDir || '';
   document.getElementById('f-sandbox').value = b.sandbox || 'workspace-write';
   populateModelSelects(b.model || '', b.reasoningEffort || '');
+  document.getElementById('f-session').value = b.sharedSession ? 'shared' : 'per-chat';
   document.getElementById('f-timeout').value = b.timeoutMinutes || 30;
   document.getElementById('f-autostart-wrap').style.display = 'none';
   document.getElementById('bot-modal').classList.add('show');
@@ -485,6 +495,7 @@ async function saveBot() {
     sandbox: document.getElementById('f-sandbox').value,
     model: document.getElementById('f-model').value,
     reasoningEffort: document.getElementById('f-effort').value,
+    sharedSession: document.getElementById('f-session').value === 'shared',
     timeoutMinutes: document.getElementById('f-timeout').value,
   };
   try {