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Backend: - SavingsAccumulator: in-memory session + ArangoDB lifetime persistence - NaiveCostEstimator: hybrid graph-derived + multiplier estimation - SavingsMiddleware: transparent http4s middleware, no existing route changes - SavingsRoutes: GET/DELETE /v1/savings endpoints - New "savings" ArangoDB collection CLI: - ix savings: shows session + lifetime token/money/water savings - ix savings --detail: per-command-type breakdown - ix savings --model <model>: configurable pricing (opus default) - ix savings reset: clear lifetime totals - Supports --format json Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Some AQL UPSERTs fail silently under concurrent load (fire-and-forget middleware). Floor lifetime to session values when returning the response so all-time is never less than this session. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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