cmux-settingslisted

# cmux-settings cmux reads user settings from `~/.config/cmux/cmux.json` (JSONC). A file watcher applies changes on save, no restart. Legacy `~/.config/cmux/settings.json` is read only as a fallback for keys absent from `cmux.json`. Schema: `https://raw.githubusercontent.com/manaflow-ai/cmux/main/web/data/cmux.schema.json`. The helper uses the schema-generated path list in `references/all-keys.md` in both checkouts and installed skills. If that reference is unavailable, it falls back to paths discoverable in `Sources/CmuxSettingsJSONPathSupport.swift`. Settings sections are `app`, `terminal`, `notifications`, `sidebar`, `sidebarAppearance`, `workspaceColors`, `automation`, `browser`, `markdown`, `fileEditor`, `fileExplorer`, `diffViewer`, and `shortcuts`. Non-settings sections (`actions`, `ui`, `commands`, `vault`, `rightSidebar`) share the same file. For a viewer-specific route, read [the viewer matrix](../cmux-customization/references/viewer-types.md). It distinguishes settings-backed knobs from structural configuration and viewer types that do not have a shipped setting yet. Do not invent a `templates.<viewer>` path: the schema is authoritative, and the adjacent templates proposal is not a supported configuration surface until its keys appear in `web/data/cmux.schema.json`. ## Helper script Use the bundled helper for every read/write. It strips JSONC comments, validates the complete proposed document with `cmux config validate` before writing, and writes atomically un