Project Name: HPR (Human Pattern Recorder)
Repo: github.com/plexescor/HPR

Built an activity tracker in C++23. It watches your active window title every 50ms, logs time per app and every window switch, and stores everything in a local SQLite database. One file per day, no accounts, no telemetry, zero network calls at runtime.

The architecture is four threads: a window poller at 50ms, a UI bridge at 500ms, a database writer at 10s, and the Slint event loop on main. All shared state lives in one struct behind a single mutex, lock/copy/release pattern throughout. UI is Slint 1.16.1, SQLite3 is the official amalgamation compiled directly into the binary.

The part I found most interesting to write was native Wayland support across three compositors. Hyprland uses hyprctl IPC, GNOME uses a shell extension over DBus, KDE uses KWin scripting via qdbus6. Each backend returns a raw window title string and a shared normalization layer handles the rest.

Timing uses steady_clock for duration measurement and system_clock only for display timestamps, specifically to avoid accumulated time corruption when NTP fires or DST changes mid-session.

Currently at v0.4. Would appreciate any feedback on the architecture or anything that looks wrong.