docs: add examples to github doc page

fix(examples/chat): resolve recalling failure by waiting for background memorizing task

docs: re-arrange README.md

ci(pypi): validate tag and require main branch

ci: setup pypi publish workflow

chore: generate dummy AGENTS.md using opencode

chore(todo): remove done

docs: polish readme

docs: correct detection for pydantic model

feat(chat-model): support config mem0 using RunnableConfig

chore: hide langmem0.middleware from sphinx-build

ci: restrict paths for triggering docify

ci(gitcode): ssh-add gitcode key to make it auto used

ci(gitcode): correct user's name and email

ci: add gitcode workflow