ZMTree Practice NotesWorking notes on independent software, interaction design, and engineering.https://www.zmtree.com/Offline-first collaboration: making a local operation queue converge safelyhttps://www.zmtree.com/en/notes/offline-collaboration/https://www.zmtree.com/en/notes/offline-collaboration/From one household record to a recoverable chain of local writes, replay, deduplication, and conflict handling.Tue, 18 Aug 2026 00:00:00 GMTEngineeringtreetreeWhy a household collaboration product should not rank its membershttps://www.zmtree.com/en/notes/no-ranking-collaboration/https://www.zmtree.com/en/notes/no-ranking-collaboration/A leaderboard creates instant clarity by turning shared maintenance into an endless scoring contest.Tue, 11 Aug 2026 00:00:00 GMTProducttreetreeBringing emotional illustration into a data interface without obscuring factshttps://www.zmtree.com/en/notes/emotional-patterns/https://www.zmtree.com/en/notes/emotional-patterns/Illustration can give an interface room to breathe, but it must follow hierarchy, semantics, and accessibility.Mon, 03 Aug 2026 00:00:00 GMTDesigntreetreePet supplies: choosing between per-pet records and household inventoryhttps://www.zmtree.com/en/notes/pet-inventory/https://www.zmtree.com/en/notes/pet-inventory/Does one bag of food belong to a pet or the household? The inventory model must fit real sharing.Mon, 27 Jul 2026 00:00:00 GMTProductZMT PetToyland bankruptcy settlement: from a high-fidelity mock to three information layershttps://www.zmtree.com/en/notes/toyland-settlement/https://www.zmtree.com/en/notes/toyland-settlement/Result, asset composition, and match history appear in sequence instead of competing inside one modal.Sun, 19 Jul 2026 00:00:00 GMTDesignTreeloreA two-player ecology diagnosis game built around asymmetric informationhttps://www.zmtree.com/en/notes/ecological-diagnosis/https://www.zmtree.com/en/notes/ecological-diagnosis/Each player sees different evidence and must exchange judgements to understand a changing micro-ecosystem.Sun, 12 Jul 2026 00:00:00 GMTProductTerrarium