docs: server deploy changes (terminal, dotfiles, Fedora, Phase 2)

docs/server-deploy-changes.md

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+# Server deploy changes (terminal + dotfiles + Fedora + Phase 2)
+
+Everything the production host / compose / `.env` needs for the workspace
+terminal, personalized dev environment, Nerd Font, and the per-user container.
+Most items have safe defaults; the **Required** ones are the only must-dos.
+
+## Required
+
+1. **Build-time env for the Next image** — add to the build env file (the one CI /
+   `scripts/build-next-app` passes as build args; e.g. `DOTENV_PROD`):
+
+   ```
+   NEXT_PUBLIC_SPOON_AGENT_WORKER_WS_URL=wss://worker.spoon.gbrown.org
+   ```
+
+   This is a `NEXT_PUBLIC` (build-time) var — it must be present **when the
+   `spoon-next` image is built**, not just at runtime. Already wired into
+   `docker/Dockerfile` + `docker/compose.yml` build args. Without it, the
+   workspace **Terminal** tab shows "not configured".
+
+2. **nginx: expose the worker for the terminal WebSocket.** Add a TLS server
+   block proxying the worker domain to the worker on the shared network, with WS
+   upgrade:
+
+   ```nginx
+   server {
+     listen 443 ssl;
+     server_name worker.spoon.gbrown.org;     # + your ssl_certificate lines
+     location / {
+       proxy_pass http://spoon-agent-worker:3921;
+       proxy_http_version 1.1;
+       proxy_set_header Upgrade $http_upgrade;
+       proxy_set_header Connection "upgrade";
+       proxy_set_header Host $host;
+       proxy_read_timeout 86400s;
+       proxy_send_timeout 86400s;
+     }
+   }
+   ```
+
+3. **Rebuild + redeploy all three images** (CI does this on push to `main`):
+   `spoon-next`, `spoon-agent-worker`, and `spoon-agent-job` (now **Fedora**).
+   The worker auto-`docker pull`s the job image once per process, so a worker
+   restart picks up the new Fedora job image. Make sure the prod registry has the
+   new `spoon-agent-job:latest`.
+
+4. **Deploy Convex functions** (new tables `userDotfiles`, `userEnvironment`).
+   `SPOON_ENCRYPTION_KEY` (or `INSTANCE_SECRET`) is already required and is what
+   encrypts dotfiles at rest — no change, just confirm it's set.
+
+5. **Confirm `SPOON_AGENT_HOST_WORKDIR`** on the `spoon-agent-worker` service is
+   the absolute host path backing `SPOON_AGENT_WORKDIR` (the fix from the terminal
+   work). The per-user homes live under `${SPOON_AGENT_WORKDIR}/homes/{username}`
+   and are bind-mounted into the box via the host daemon — this only resolves if
+   the host-workdir translation is correct. (No new var; just verify.)
+
+## Optional (safe defaults — only set to override)
+
+On the `spoon-agent-worker` service:
+
+| Var                            | Default                                           | Purpose                                                                                                                  |
+| ------------------------------ | ------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ |
+| `SPOON_AGENT_TERMINAL_SECRET`  | falls back to `SPOON_AGENT_WORKER_INTERNAL_TOKEN` | HMAC secret for terminal tokens (must match the Next app's, which also falls back). Leave unset to use the shared token. |
+| `SPOON_AGENT_BOX_IDLE_MS`      | `1800000` (30m)                                   | How long a per-user box survives idle before being reaped.                                                               |
+| `SPOON_AGENT_TERMINAL_IDLE_MS` | `1800000`                                         | (Legacy; box idle now governs cleanup.)                                                                                  |
+
+No new env is needed for dotfiles, the per-user home, or the Nerd Font.
+
+## Notes / one-time cleanup
+
+- **Layout change:** thread checkouts moved from `${WORKDIR}/{jobId}/repo` to
+  `${WORKDIR}/homes/{username}/Code/{spoon}/{branch}` (persistent). Old per-job
+  dirs are orphaned and safe to delete.
+- **Containers:** per-thread agent containers (`docker run --rm`) and per-job
+  terminal containers (`spoon-agent-term-*`) are gone; everything runs in one
+  `spoon-box-{username}` per user. Any lingering `spoon-agent-term-*` containers
+  can be removed.
+- **Resources:** each active user holds one box (4 GB mem cap, `sleep infinity`)
+  until 30m idle. Single-user = one box.
+- Compose already mounts `/var/run/docker.sock` into the worker (unchanged) — the
+  box is created/exec'd through it.
+
+## Quick post-deploy checks
+
+```bash
+docker exec spoon-agent-worker docker --version            # CLI present (29.x)
+docker run --rm git.gbrown.org/gib/spoon-agent-job:latest codex --version  # 0.142
+docker run --rm git.gbrown.org/gib/spoon-agent-job:latest bash -lc 'eza --version; zoxide --version; oh-my-posh --version'
+# then: open a thread → Terminal tab; Settings → Dotfiles add a .bashrc alias.
+```