Development record

Product thinker ruling, 2026-10-05: abcd does not touch a person's ~/.claude/ folder, and nothing in it calls abcd, with one exception the person consents to: the status line, which is essential for product thinkers and which a plugin cannot set (a plugin's settings may set only agent and subagentStatusLine; the hooks abcd needs can all live in the plugin's hooks/hooks.json). Today ahoy install offers and writes the statusLine entry, and the person's settings had also gained a SubagentStop entry that called a stale abcd build (the defect that recreated ~/.abcd the same day). Because the status line runs on every refresh in every session, the risks the ruling accepts are: a stale or missing binary at the wired path; a status-line verb that writes state; a line left behind after an uninstall; the person's previous status command recorded once and gone stale; a concurrent write corrupting settings.json so the harness ignores the whole file; a wired path a project or another user can replace; and settings synced to a machine without that path.