Cost "f": price the agent at the model it runs; thinking/vision token breakdown; model switch; near-duplicate gate

Never store a credential: redact at every DB write and at boot; keep PDFs when Gemini refuses for budget reasons

Gemini token accounting: usageMetadata -> Extraction, VisionStats, PdfResult

Figure & graph mining in the autonomous cycle: figures.py + Postgres port, crops stored in DB, review UI