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.mjs

@@ -6,6 +6,7 @@ import { stripKnownChatSkillPrompt } from './chat-skills.mjs';
  */
 
 export const TASK_ROUTING_HINT_RE = /^【TKMind 路由提示】[\s\S]*?\n\n/;
+export const MEMIND_TASK_ORCHESTRATION_RE = /^【Memind 任务编排】[\s\S]*?(?:用户任务：|用户任务:)\s*/u;
 export const MINDSPACE_CONTEXT_RE = /^\[MindSpace 上下文\][\s\S]*?\n\n/;
 const USER_IDENTITY_BLOCK_RE = /^\[用户身份\][\s\S]*?\n\n/;
 
@@ -17,6 +18,10 @@ export function stripTaskRoutingHint(text) {
   return String(text ?? '').replace(TASK_ROUTING_HINT_RE, '').trimStart();
 }
 
+export function stripMemindTaskOrchestrationPrefix(text) {
+  return String(text ?? '').replace(MEMIND_TASK_ORCHESTRATION_RE, '').trimStart();
+}
+
 export function stripMindSpaceContextPrefix(text) {
   let next = String(text ?? '');
   while (MINDSPACE_CONTEXT_RE.test(next)) {
@@ -60,6 +65,7 @@ export function deriveUserFacingText(text) {
   let next = String(text ?? '');
   next = stripUserIdentityPrefix(next);
   next = stripTaskRoutingHint(next);
+  next = stripMemindTaskOrchestrationPrefix(next);
   next = stripMindSpaceContextPrefix(next);
   next = stripKnownChatSkillPrompt(next);
   return next.trim();