Contributed backend development to DIYgod/RSSHub and logseq/logseq, focusing on reliability and data accuracy. Built an RSS feed route for the Hazy Research Blog that parses internal JSON, scrapes full post content, and normalizes publication times with timezone handling, using JavaScript and Node.js. Enhanced route security and maintainability by migrating the Paul Graham route to HTTPS and clarifying maintainer ownership. Improved Org-mode file import in logseq/logseq by updating the Clojure-based parser to extract titles from property drawers appearing mid-file, adding regression tests to ensure correctness. These efforts reduced user-facing errors and strengthened operational governance across both projects.