My quick capture tool is now more interoperable than before, but I have done nothing to solve my own syncing issues. First, I am transitioning from Roam to Logseq. Logseq is mostly at feature parity with Roam, but allows you to store your notes as local markdown files. This is similar to how Obsidian works, but to my knowledge Logseq is the first block-based tool for thought to consume regular markdown files. Roam allows offline graphs, but the data is not stored in readable markdown files.