# Personalized dev environment (dotfiles + persistent home)

Makes the workspace terminal feel like the user's own machine: a Fedora image
preloaded with QoL CLI tooling, a persistent per-user home, and user dotfiles.

## The model

- **Persistent per-user home.** Each user gets a home directory on the worker
  host at `${SPOON_AGENT_WORKDIR}/homes/{username}`, bind-mounted into every
  job/terminal container at `/home/{username}` (`HOME`). It survives across
  sessions, so dotfiles, installed tools, nvim plugins, and shell history persist.
  `username` is derived from the user's profile first name (sanitized).
- **Threads as folders.** Each thread's checkout lives at
  `~/Code/{spoon}/{branch}` inside that home, so every thread shows up as a
  folder in one home. The agent (`codex --cd …`) and the terminal both open there.
- **Neutral defaults (everyone).** The Fedora job image
  (`docker/agent-job.Dockerfile`) ships zoxide, eza, bat, fzf, fd, ripgrep, gh,
  gum, neovim, tmux, oh-my-posh, etc., plus system-wide defaults that work even
  with an empty home: `/etc/profile.d/spoon.sh` (tool init + aliases),
  `/etc/tmux.conf` (login-shell panes), `/etc/spoon/omp.json` (prompt theme).
- **User dotfiles (per-user).** Configured in **Settings → Dotfiles**, applied on
  top of the neutral defaults.

## Settings → Dotfiles

A mini file-browser workspace rooted at `home/{firstName}`:

- **Editable overlay tree** — drag in files/folders (or use Upload folder/files),
  edit them in the Monaco editor, add/delete. Files are placed **relative to
  `$HOME`** (`.bashrc` → `~/.bashrc`, `.config/nvim/…` → `~/.config/nvim/…`).
  Stored encrypted at rest (`userDotfiles`, AES-256-GCM via `secretCrypto`).
- **Dotfiles repo (optional)** — a **public** git repo URL + optional ref + a
  setup script path. On start the container clones it to `~/.dotfiles` and runs
  `bash ~/.dotfiles/<setup>` (e.g. a bootstrap that symlinks configs, like the
  user's Panama `install`).
- **Precedence (hybrid):** repo clone + setup runs first; then the editable
  overlay is written on top — **overlay wins**.

Secrets: dotfiles are encrypted, but real API keys/tokens belong in a Spoon's
**Secrets** feature (injected as env vars), not in dotfiles. The UI nudges this.

## Materialization (worker)

`apps/agent-worker/src/user-environment.ts`:

1. `fetchUserEnvironment(jobId)` — a worker-token Convex action
   (`userDotfilesNode.getEnvironmentForJob`) returns the owner's decrypted
   dotfiles + repo/setup config.
2. `materializeUserHome` — ensures `~/.bash_profile` (so login shells source
   `~/.bashrc` in a mounted home with no `/etc/skel`); clones the repo + runs the
   setup command **inside the job image** (so the user's tools/paths apply), only
   when the config hash changes (`~/.spoon/env-hash`); writes the overlay files.

## Configuration

| Variable                                   | Default                                                        | Notes                                                                                    |
| ------------------------------------------ | -------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `SPOON_AGENT_WORKDIR`                      | `.local/agent-work` (dev) / `/var/lib/spoon-agent/work` (prod) | Per-user homes live under `homes/{username}`; reuses the existing host-path translation. |
| `SPOON_ENCRYPTION_KEY` / `INSTANCE_SECRET` | —                                                              | Already required; encrypts dotfiles like other secrets.                                  |

No new required env. The home is a host directory under the existing workdir, so
the prod bind-mount + `SPOON_AGENT_HOST_WORKDIR` translation already covers it.

## Notes / limits (Phase 1)

- **Repo auth:** public repos only. Private/self-hosted (e.g. Gitea) dotfiles
  repos are a follow-up (store a token/deploy key).
- **Binary files:** the overlay is text-first.
- **Cleanup:** `~/Code/{spoon}/{branch}` checkouts persist (threads as folders);
  a per-thread "delete checkout" action is a follow-up.
- **Concurrency:** jobs share one home; fine at the default
  `SPOON_AGENT_MAX_CONCURRENT_JOBS=1`.

## Phase 2 north star

A single long-running per-user container that every thread `exec`s into (agent
via `docker exec`, not `docker run --rm`). The per-user home + `~/Code/{spoon}/
{branch}` layout built here is its foundation.
