https://justcalculations.com/llms.txt 2026-08-22 weekly 1.0 https://justcalculations.com/llms-full.txt 2026-08-22 weekly 0.9 https://justcalculations.com/agents.json 2026-08-22 weekly 0.9 https://justcalculations.com/.well-known/agent-card.json 2026-08-22 weekly 0.8 https://justcalculations.com/.well-known/agent.json 2026-08-22 weekly 0.8 https://justcalculations.com/ai/cfa-level-1-calculations.md 2026-08-22 weekly 0.8 https://justcalculations.com/ai/series-86-87.md 2026-08-22 weekly 0.8 https://justcalculations.com/ai/products.json 2026-08-22 weekly 0.8