Blog
Notes on frontend architecture, local-first software and small builds without dependencies.
A PWA for the shared coffee tab in an office kitchen: passkey login without usernames, account names sealed with an RSA key the server never holds, prices frozen per booking, and an offline queue that cannot double-count.
A web component library for electrophoretic displays: just over eighty custom elements without a framework, form-associated controls, and a design that follows from the refresh and contrast behaviour of e-paper panels.
A speaking-pace meter for iPhone and Mac: a words-per-minute limit, a full-screen warning when it is exceeded, measurement over speaking time instead of wall-clock time, and audio that is discarded after the calculation.
A Seeed reTerminal E1001 as a live VVS departure board with ESPHome: the API is queried and parsed on the device, and no intermediate server is involved.
A local-first time tracker for macOS, iPhone and iPad: idle detection with confirmation prompts, pivot-table reporting, Jira import, Git branch awareness, and a local JSON file as the data store.
Local-first software keeps the authoritative copy of the data on the user's device. What that storage model means in practice, and which design decisions it implies for a time tracker.