# sethmux — Decision Log

Project-local decisions specific to sethmux. Cross-cutting infra decisions live in `~/bin/DECISIONS.md`.

Format: `YYYY-MM-DD: <decision> — <why>`

---

## 2026-04-24

- **Mobile compose bar instead of patching xterm.js IME handling.** Added a third toolbar row (toggled by `Type` button) holding a real `<input>` with `autocorrect=on`/`enterkeyhint=send`. Enter/Send flushes the assembled string to stdin in one shot. **Why:** xterm.js reads from a hidden textarea via per-keystroke events, but Gboard/iOS autocorrect, swipe, and predictions mutate `.value` in bulk via `inputType="insertReplacementText"` events that xterm.js discards. Bridging that into xterm would mean forking; the compose bar sidesteps it entirely with a one-shot string send. The existing `disableMobileAutocomplete()` on `.xterm-helper-textarea` is preserved as belt-and-suspenders for chord/arrow keys typed outside the compose bar.

- **Visual system: Google Workspace dark vocabulary, sethmux orange accent.** Tokens: bar `#202124`, button surface `#303134`, hairline `#3c4043`, primary text `#e8eaed`, accent `#D35400` (replaces Google blue), Roboto 12/500 + Roboto Mono 12/400 for chord keys. **Why:** the previous palette (`#111`/`#222`/2px orange top border) read as a generic terminal toolbar; the Workspace vocabulary makes the bar feel like a deliberate productivity surface while keeping `#D35400` as sethmux brand identity.

- **Manual deploy is split across TWO hosts.** Static assets that Caddy serves directly (`toolbar.js`, `manifest.json`, `icon-*.png`) live in `/opt/sethmux/` on the **caddy CT** (192.168.0.185, `ssh caddy`). The ttyd index (`index.html`) and notify-server (`notify-server.py`) live in `/opt/sethmux/` on **steel141** (192.168.0.141), where the systemd units run. Both hosts happen to use `/opt/sethmux/` — easy to confuse. **Why:** Caddy's `handle /toolbar.js { root * /opt/sethmux; file_server }` resolves the root against **Caddy's own filesystem**, not the upstream's. Caddy is on the caddy CT, so that's where the file must live. Catch-all `handle { reverse_proxy 192.168.0.141:7683 }` proxies the index page request to ttyd on steel141, which serves `--index /opt/sethmux/index.html` from its own disk.

  **Deploy commands:**
  ```bash
  # Static assets served by Caddy → caddy CT
  scp static/toolbar.js static/manifest.json static/icon-*.png caddy:/opt/sethmux/

  # ttyd index + notify-server → steel141 (this host)
  sudo cp static/index.html /opt/sethmux/
  sudo cp notify-server.py /opt/sethmux/
  ```

  No daemon restart needed for static-asset changes. Restart `sethmux.service` (steel141) only when changing ttyd args or `index.html`.

## Deferred / Rejected

- **Forking xterm.js to handle `inputType: insertReplacementText` events.** Considered as the "real" fix for mobile autocorrect. Rejected because compose-bar approach is smaller, preserves upstream xterm.js, and is more obviously correct (one-shot string send vs. interleaved IME state machine).

- **`inputmode="none"` on the helper textarea ("nuclear option" from `AUTOCOMPLETE_FIX.md`).** Considered if mobile keyboard autocorrect still corrupts xterm input despite hardening. Rejected for now because it would fully disable the soft keyboard, requiring a separate toggle UX. The compose bar gives users the autocorrect surface they actually want without removing per-keystroke typing.