https://opentopology.dev/ 2026-06-27 weekly 1.0 https://opentopology.dev/llms.txt 2026-06-27 weekly 0.8 https://opentopology.dev/llms-full.txt 2026-06-27 weekly 0.7 https://opentopology.dev/spec/otop-core-0.2/ 2026-06-27 weekly 0.7