fix: portal stability, session list DB fallback, and UX polish

- Free stale Memind listeners on 8081 before startup and exit cleanly on EADDRINUSE
- Backfill owned sessions missing from Goose via h5_conversation_messages summaries
- Strip Memind task orchestration prefixes from user-facing chat text
- Repair missing public docx links before release MindSpace link checks

Co-authored-by: Cursor <cursoragent@cursor.com>

conversation-display.test.mjs

@@ -25,6 +25,16 @@ test('deriveUserFacingText removes routing hint and skill preface from agent pay
   assert.equal(deriveUserFacingText(agentPayload), userText);
 });
 
+test('deriveUserFacingText removes Memind task orchestration prefix', () => {
+  const userText = '帮我生成深度搜索报告';
+  const agentPayload = [
+    '【Memind 任务编排】以下为用户任务，请使用工具与技能实际执行并产出结果，不要只做文字描述。',
+    '路由判定：用户要求深度搜索并形成报告。',
+    `用户任务：${userText}`,
+  ].join('\n');
+  assert.equal(deriveUserFacingText(agentPayload), userText);
+});
+
 test('deriveAssistantFacingText hides skill/process narration without a deliverable link', () => {
   const internal =
     '好的，John！注意到技能更新了几个细节要求，比如页脚要用`data-mindspace-page-tag="platform-brand"`和`tkmind.cn`。我来为你重新生成全面增强版的AI机器人研究报告页面：';