The agent insists on facts the user changed months ago

• The agent greets the user as living in Berlin and books EU options, though the user moved to Toronto and updated their profile.
• The user has corrected it several times, yet the old fact keeps coming back.
• The correct current address is in the profile database.

long-term memory (vector store):
  mem#4  "user lives in Berlin"           created 2024-01, never expired, retrieved every session
  mem#9  "user is moving to Toronto soon"  created 2024-05
profile DB (source of truth): city = "Toronto" (updated 2024-06)
memory write policy: append-only; no update, no supersede, no TTL