Fix UUID leaking as user display name in agent context

resolveUserAddressName now filters UUID-format strings (same as wx_*),
preventing user.id from being used as a display name when nickname/
displayName is absent.

buildSessionMemoryEntries always calls ensureUserMemoryProfile when
userContext is available so stale profiles with UUID display names are
auto-healed on next session init.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

user-memory-profile.mjs

@@ -154,11 +154,12 @@ export function buildSessionMemoryEntries({
     return entries;
   }
 
-  const profile =
-    loadUserMemoryProfile(workingDir) ??
-    (userContext?.userId
-      ? ensureUserMemoryProfile(workingDir, userContext)
-      : null);
+  // Always call ensureUserMemoryProfile when userContext is available so that
+  // stale displayName values (e.g. UUID written before nickname was resolved)
+  // are healed on the next session init.
+  const profile = userContext?.userId
+    ? ensureUserMemoryProfile(workingDir, userContext)
+    : loadUserMemoryProfile(workingDir);
 
   const addressName = resolveUserAddressName({
     displayName: profile?.displayName ?? userContext?.displayName,

user-publish.mjs

@@ -24,13 +24,16 @@ function renderBrandingBlock(userAddressName) {
 }
 
 /** Preferred name when addressing the user in chat (display name > username > slug). */
+const INTERNAL_ID_PATTERN =
+  /^wx_[a-z0-9_]{4,64}$|^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
+
 export function resolveUserAddressName({ displayName, username, slug } = {}) {
   const preferred = String(displayName ?? '').trim();
-  if (preferred) return preferred;
+  if (preferred && !INTERNAL_ID_PATTERN.test(preferred)) return preferred;
   const uname = String(username ?? '').trim();
-  if (uname && !/^wx_[a-z0-9_]{4,64}$/i.test(uname)) return uname;
+  if (uname && !INTERNAL_ID_PATTERN.test(uname)) return uname;
   const fallback = String(slug ?? '').trim();
-  if (fallback && !/^wx_[a-z0-9_]{4,64}$/i.test(fallback)) return fallback;
+  if (fallback && !INTERNAL_ID_PATTERN.test(fallback)) return fallback;
   return '用户';
 }