**Epic**: #11 Memory and Project State Backbone [MVP-1] **Iteration**: MVP-1 token_usage table: session_id, agent, model, provider, input_tokens, output_tokens, cost_usd, timestamp. Per-session and per-turn aggregates. Budget threshold queries.
Epic: #11 Memory and Project State Backbone [MVP-1]
Iteration: MVP-1
token_usage table: session_id, agent, model, provider, input_tokens, output_tokens, cost_usd, timestamp. Per-session and per-turn aggregates. Budget threshold queries.