The cached agent accumulates session_input_tokens across messages, so
run_conversation() returns cumulative totals. But update_session() used
+= (increment), double-counting on every message after the first.
- session.py: change in-memory entry updates from += to = (direct
assignment for cumulative values)
- hermes_state.py: add absolute=True flag to update_token_counts()
that uses SET column = ? instead of SET column = column + ?
- session.py: pass absolute=True to the DB call
CLI path is unchanged — it passes per-API-call deltas directly to
update_token_counts() with the default absolute=False (increment).
Reported by @zaycruz in #3222. Closes#3222.
a8df7f9964