# Open Threads – zlh-grind

This file tracks active but unfinished work.

Keep it short.

---

## Agent (zlh-agent)

### Dev Runtime System

Completed:

- catalog validation implemented
- runtime installs artifact-backed
- install guard implemented
- all installs now fetch from artifact server (no local artifact assumption)

Outstanding:

- runtime install verification improvements
- catalog hash validation
- runtime removal / upgrade handling

---

### Dev Environment

Completed:

- dev user creation
- workspace root `/home/dev/workspace`
- console runs as dev user
- `HOME`, `USER`, `LOGNAME`, `TERM` env vars set correctly

Outstanding:

- PATH normalization
- shell profile consistency
- runtime PATH injection

---

### Code Server Addon

Status: ✅ Installed, running, browser-verified end-to-end

Confirmed:

- pulled from artifact server (tar.gz)
- installed to `/opt/zlh/services/code-server`
- binds to `0.0.0.0:6000`
- lifecycle endpoints: `POST /dev/codeserver/start|stop|restart`
- detection via `/proc/*/cmdline` scan
- full browser IDE loading confirmed at `dev-6070.zerolaghub.dev`

---

### Game Server Supervision

Completed:

- crash recovery with backoff: 30s → 60s → 120s
- backoff resets if uptime ≥ 30s
- transitions to `error` state after repeated failures
- crash observability: time, exit code, signal, uptime, log tail, classification
- classifications: `oom`, `mod_or_plugin_error`, `missing_dependency`, `nonzero_exit`, `unexpected_exit`

---

### Agent Future Work (priority order)

1. Structured logging (slog) for Loki
2. Dev container `provisioningComplete` state in `/status`
3. Graceful shutdown verification (SIGTERM + wait for Minecraft)
4. Process reattachment on agent restart

---

## Dev IDE Access

### Browser IDE ✅ Fully Working (browser-verified)

```
Browser → dev-<vmid>.zerolaghub.dev → Traefik → API → container:6000
```

Browser-verified: VS Code loads in browser at `dev-6070.zerolaghub.dev/?folder=/home/dev/workspace`
with workspace mounted, extensions panel visible, AI chat panel active.

Verified flow:

1. frontend calls `POST /api/dev/:id/ide-token`
2. API returns `https://dev-<vmid>.zerolaghub.dev/?token=...`
3. browser opens hosted URL
4. Traefik wildcard router forwards to API at `http://10.60.0.245:4000`
5. API validates token, sets `zlh_dev_ide_token`, redirects to clean host URL
6. subsequent cookie-backed request redirects to `/?folder=/home/dev/workspace`
7. IDE loads fully in browser

### Remaining Work

- confirm "Open IDE" button in portal uses hosted URL in production path
- reduce legacy `/__ide/:id` compatibility paths once portal button confirmed
- simplify and harden `devProxy` — remove stale path-based assumptions

### Wildcard Edge (Traefik)

- Traefik on `zlh-zpack-proxy` (10.70.0.242) handles wildcard TLS via DNS challenge
- wildcard cert `*.zerolaghub.dev` issued via Let's Encrypt + Cloudflare DNS-01
- Traefik routes `dev-*.zerolaghub.dev` → API at `http://10.60.0.245:4000`
- `passHostHeader: true` preserves original hostname through to API
- no Caddy, no `:8081`, no per-container DNS/Traefik side effects from API

### Local Dev Access — SSH via CF Tunnel (Next Step)

Decision: Cloudflare Tunnel on bastion VM for SSH access. Free tier covers up to 50 users.

Planned architecture:

```
Developer laptop
  ↓ ssh dev-6070.zerolaghub.dev
Cloudflare edge
  ↓ CF Tunnel (persistent, runs on bastion)
Bastion VM (internal)
  ↓ SSH proxy jump
Dev container (10.100.x.x)
```

Same hostname as browser IDE — different protocol. Cloudflare routes HTTPS to
Traefik and SSH to CF Tunnel separately.

Developer one-time SSH config:

```
Host *.zerolaghub.dev
    ProxyCommand cloudflared access ssh --hostname %h
```

After that `ssh dev-6070.zerolaghub.dev` just works. Portal can surface this
config snippet as a copyable block.

Outstanding:

- Install `cloudflared` on bastion VM
- Create CF Tunnel pointed at bastion SSH port
- Map `*.zerolaghub.dev` SSH through tunnel
- Portal SSH config snippet UI
- Agent: surface SSH hostname in `/status` or via API

---

## API (zpack-api)

Completed:

- dev provisioning payload
- runtime/version fields
- enable_code_server flag
- `GET /api/servers/:id/status` — server status endpoint
- `POST /api/dev/:id/ide-token` — IDE token generation + hosted URL
- `GET /api/dev/:id/ide` — bootstrap route (validates token, sets cookie, redirects)
- `/__ide/:id/*` — live tunnel proxy (HTTP + WS, target-bound)
- dev routing experiment removed (`devRouting.js`, `devDePublisher.js` deleted)
- host-based URL generation (`DEV_IDE_HOST_SUFFIX`, `DEV_IDE_RETURN_HOSTED_URL`)
- `handleHostedProxy` — host-based routing via `Host` header vmid extraction
- token bootstrap → cookie handoff working under hosted flow
- hosted flow browser-verified end-to-end

Outstanding:

- simplify and harden host-native `devProxy` — remove stale path-based assumptions
- dev runtime catalog endpoint for portal
- Headscale auth key generation

---

## Portal (zpack-portal)

Completed:

- dev runtime dropdown
- dotnet runtime support
- enable code-server checkbox
- dev file browser support

Outstanding:

- confirm "Open IDE" button fully uses hosted URL flow
- SSH config snippet for local VS Code / terminal access
- Headscale setup instructions

---

## Pre-Launch Checklist

Outstanding before launch:

- **Upload testing** — test file upload flow end-to-end in dev containers
- **Portal copy/wording** — site needs rewriting for public audience
- **Dedicated host migration** — evaluate GTHost upgrade (Gold 6152, Detroit)
  - Trial period approach: $5/day up to 10 days
  - PBS restore for safe migration validation
  - Two-host split (core vs game/dev) is longer term option

---

## Platform

Future work:

- CF Tunnel SSH access (see Local Dev Access above)
- Tailscale dev access (alternative/complement to CF Tunnel)
- artifact version promotion
- runtime rollback support
- Cloudflare R2 for large artifact/mod file delivery at scale

---

## Closed Threads

- ✅ PTY console (dev + game)
- ✅ Mod lifecycle
- ✅ Upload pipeline
- ✅ Runtime artifact installs
- ✅ Dev container filesystem model
- ✅ Code-server artifact fix
- ✅ API status endpoint for frontend agent-state consumption
- ✅ Game server crash recovery with backoff
- ✅ Crash observability (classification, log tail, exit metadata)
- ✅ Code-server lifecycle endpoints (start/stop/restart)
- ✅ Code-server process detection via /proc scan
- ✅ Dev IDE proxy — path-based browser IDE working end-to-end
- ✅ Hosted wildcard Traefik → API → container dev IDE flow — browser-verified
- ✅ Per-container dev IDE edge publish/unpublish removed from API
- ✅ Wildcard TLS cert `*.zerolaghub.dev` via Let's Encrypt + Cloudflare DNS-01
- ✅ Browser IDE fully loading at dev-<vmid>.zerolaghub.dev