https://flat.cash/ weekly 1.0 https://flat.cash/docs monthly 0.9 https://flat.cash/protocol-specification monthly 0.9 https://flat.cash/blog weekly 0.8 https://flat.cash/roadmap monthly 0.7 https://flat.cash/participate weekly 0.8 https://flat.cash/launch weekly 0.8 https://flat.cash/migration monthly 0.6 https://flat.cash/contact monthly 0.5 https://flat.cash/llm.txt monthly 0.8 https://flat.cash/contracts monthly 0.8 https://flat.cash/governance monthly 0.9