Notes

How each thing was made: why, what went wrong, and how it turned out.

• Xiaodou Ledger: a screenshot is the entry, and the five times it got stuck on the way to the App Store2026-10-22An app that has a multimodal model read payment screenshots straight into ledger entries. From the first line of code to the App Store, every time review, China's ICP filing and the release process stopped it.
• Flipfile: organizing photos, not freeing up space2026-10-22A photo organizer that never goes online, and the reasoning behind a few key decisions: why it doesn't show how many GB you saved, why deletions pile up for one confirmation, why I deleted all the tests, and why I renamed it.
• Making an agent's "done" something you can trust2026-10-22When you write code with agents, the most expensive mistake isn't bad code. It's the agent saying it's fixed when it isn't. Three real incidents, what I changed after each one, and one time I gave ground and paid for it right away.