# TreeLine computer app Exported by REA's `export-desktop-application` from a capture of the `treeline` package (capture Evidence `ev_cedd8aa6c80e75efe1fcd13be6c7886a6a3768a14213365580484c5b9b70d481`). It was checked against agentenv-framework 0.9.1431. - `envs/treeline/` is a computer app on the `ubuntu-24.04` base with the `reference` driver, for `amd64` and `arm64`. It installs `treeline` from the distribution archive, launches `sh -c cd "$HOME" 2>/dev/null; exec 'treeline' "$HOME"/'Documents/reading-list.trln'` at boot and is ready when a window of class `treeline.py` appears. - At launch the app opens `~/Documents/reading-list.trln`, the seed's one document. - Owned paths: `~/Documents`. `data/get` returns their files and a typed JSON view of each; `data/reset` restores the seed. - Seed: 1 file(s) made for the task, as saved at checkpoint `seed`. Text files and dconf keys spell the capture host's name as `localhost`, `user@host` as `user@localhost` and the home as `/home/user`, which the computer respells to its own at boot. 1 gzip file(s) were compressed again only to clear their headers, their content unchanged. - Neither owned nor seeded, so the app starts without what it saved there: these files or folders, which changed during the capture, `~/.config/QtProject.conf`, `~/.treeline-3.1`. To own them, capture again naming them with `state_paths` on `start_build_capture`, or `--state-path` on `capture-desktop-application`. - `tasks/smoke.json` deploys the app. Run the task with `agent-env run `, or only the deploy with `--task smoke`. The seed was made for this task, not taken from a user's own data; read `envs/treeline/seed/` before publishing the bundle. ## Task `add-history-book` `tasks/add-history-book.json` deploys the app, has the agent work through the computer from the prompt below, and grades the outcome with `artifacts/add-history-book-check/verify.py`, which reads the app's `data/get` views and needs no model. It grades once the app's files have held for 3 s, so a save the app makes on its own within that time of the agent stopping counts; each result's `settled` is false when they were still changing 15 s after the first read. `evals/treeline.toml` names it, so a run of the bundle runs it. > In TreeLine, add the book The Silk Roads by Peter Frankopan, published in 2015, under the History category of my reading list in Documents/reading-list.trln, and save it. Checks, each of which must pass: - `history-gains-a-book`: `{"kind":"member_count","file":"Documents/reading-list.trln","pointer":"/nodes/[uid=7584d494d9f511f1a873edd4f1920549]/children","equals":3}` - `one-more-book`: `{"kind":"member_count","file":"Documents/reading-list.trln","pointer":"/nodes","matching":"[format=BOOK]","equals":8}` - `history-kept`: `{"kind":"value_equals","file":"Documents/reading-list.trln","pointer":"/nodes/[uid=7584d494d9f511f1a873edd4f1920549]/data/NAME","value":"History"}` - `no-new-category`: `{"kind":"member_count","file":"Documents/reading-list.trln","pointer":"/nodes","matching":"[format=CATEGORY]","equals":3}` REA kept the task because its checks fail on the seed (`history-gains-a-book`, `one-more-book`) and all pass on the captured end state. To measure a solve rate, run the task k times (3 by default) with the agent and model to measure, and count the runs whose summary line says `passed`; a run that says `failed` did not finish and is run again rather than counted: agent-env run --task add-history-book --agent claude-code --model MODEL