Two bugs were causing Miku to call users by wrong names:
BUG 1 - No authoritative source:
Declarative name facts ('The user's name is Lily') were injected into
the prompt without any counterweight. If an old consolidation run
extracted a wrong name, Miku would believe it forever.
Fix: agent_prompt_prefix now appends the user's Discord display name
as AUTHORITATIVE context, with explicit instruction to prefer it over
any contradictory name facts.
BUG 2 - Dedup prevented name updates:
_is_duplicate_fact() used vector similarity to detect duplicates.
'The user's name is Lily' and 'The user's name is koko210Serve' are
~80% identical text, giving high cosine similarity (>0.85 threshold).
New correct name facts were silently rejected as 'duplicates'.
Fix: name facts now use _find_existing_fact() to compare fact_value
directly. If the name changed, old fact is deleted and new one stored.
Also: the extraction prompt now includes the user's Discord display
name as a hint, so the LLM knows the authoritative name when extracting
facts during consolidation.
koko210Serve
46ea4f2c53