# BACKLOG

> All remaining work is planned in [TODO](./TODO.md) (2026-08-13). This file records completed backlog items for reference; new unplanned work is added here.

## Cloudflare Configuration

### DNS & Pages

- [ ] Cloudflare Pages: link custom domain (manual)
- [ ] Create Cloudflare Pages project and cut over frontend hosting (manual)

### Security & TLS

- [ ] Enable Tiered Cache, WAF, rate limiting (manual)
- [ ] Tiered Cache: enable Smart Tiered Cache, validate `Cf-Cache-Status: HIT` from upper tier
- [ ] WAF: enable OWASP Managed Ruleset, set to Simulate → review 48h → Block, enable Bot Fight Mode
- [ ] Rate limiting: `/api/admin/login` + `/api/admin/*` → 10 req/10s per IP, Challenge action
- [ ] HTTPS/WSS: Always Use HTTPS, HSTS max-age=31536000 includeSubDomains preload, min TLS 1.2
- [ ] HTTPS/WSS: enforce at edge (Cloudflare) and origin (nginx), redirect HTTP → HTTPS

## Monitoring & Observability

### External Monitoring

- [ ] Set up UptimeRobot external monitoring
- [ ] UptimeRobot: add HTTP monitor for `https://linearvoid.tv/health` (5min interval)
- [ ] UptimeRobot: add keyword monitor for `https://linearvoid.tv/hls/playlist.m3u8` (keyword: `#EXTM3U`, 5min)
- [ ] Alert on 2 consecutive failures, notify via email + Discord/Slack webhook

## Frontend Tests

### User Frontend

- [ ] Test coverage for all critical frontend components and interactions
- [ ] Add code coverage reporting and enforce minimum coverage threshold in CI/CD pipeline
- [ ] Document test cases and expected outcomes

### Admin Frontend

- [ ] Test coverage for all critical admin UI components and interactions
- [ ] Add code coverage reporting and enforce minimum coverage threshold in CI/CD pipeline
- [ ] Document test cases and expected outcomes

## Backend Integration Tests

### Cloudflare R2

- [ ] Test retrieval of segments and manifests from R2 via Cloudflare edge
- [ ] Validate cache hit/miss behavior and performance metrics
- [ ] Validate edge cache hit/miss behavior with repeat requests — script `scripts/validate-edge-cache.sh` created

## External Services

> Evidence tracker: `docs/operations/cloudflare-uptimerobot-checklist.md`

- [ ] UptimeRobot: add HTTP monitor for `https://linearvoid.tv/health` (5min interval)
- [ ] UptimeRobot: add keyword monitor for `https://linearvoid.tv/hls/playlist.m3u8` (keyword: `#EXTM3U`, 5min)
- [ ] Alert on 2 consecutive failures, notify via email + Discord/Slack webhook

## Production Deployment

### Host Provisioning (Hetzner — not provisioned)

- [ ] Provision Hetzner CX22 (2 vCPU, 4 GB, 40 GB) in Ashburn VA, Ubuntu 24.04
- [ ] Install Docker Engine + Compose plugin, open firewall: 80/443 (public), 2375 (runner IP only)
- [ ] Configure Docker daemon for remote TLS access (`-H tcp://0.0.0.0:2376` with certs)
- [ ] Create `/srv/linearvoid/data/{playlist,media,hls,chat,slate}` directories

### CI/CD & Secrets

- [ ] Add `CI_PROD_*` secrets to Gitea: DOCKER_HOST, R2 keys, admin password, DB password, Grafana password
- [ ] Trigger CD workflow with `DOCKER_HOST` pointing to Hetzner IP

### Smoke Test & Cutover

- [ ] Verify all 11 containers start healthy, check `/health`, `/hls/playlist.m3u8`, WebSocket
- [ ] Update Cloudflare A record `linearvoid.tv` → Hetzner IP, SSL Full (strict), test HTTPS + WSS
- [ ] Smoke test: viewer SPA loads, HLS plays, chat connects, admin login → upload → playlist → playout

### Production Operations

- [ ] Set up Prometheus alerting notifications + UptimeRobot on production URL
- [ ] Run `scripts/backup-db.sh` + `scripts/verify-backups.sh` on production host
- [ ] Document production IP, SSH access, rollback procedure, scaling thresholds

## Scaling & Performance

### Load Testing

- [ ] Execute WebSocket load tests with real infrastructure — ramp 10→100→500→1000 connections, measure p95 latency + errors
- [ ] Execute admin API benchmarks with real infrastructure — `wrk`/`k6` against `/api/admin/*`, target p95 <1s

### Cache & TTFB Optimization

- [ ] Optimize segment immutability and manifest TTL for cache efficiency
- [ ] Tune manifest TTL: measure `Cf-Cache-Status` distribution, adjust to 0.5× segment duration
- [ ] Measure playback TTFB from multiple US regions — WebPageTest from 3+ regions, target <4s warm cache
- [ ] Track cache hit ratio and R2 ops in production — Cloudflare GraphQL → Grafana panel, alert <90%

### Capacity & Future Planning

- [ ] Capacity triggers: Prometheus rules for cache-miss >10%/15min, CPU >80%/10min
- [ ] Plan Phase 2 service separation — document boundaries (playout CPU, chat latency, DB state, monitoring), estimate per-service resources
- [ ] Plan Phase 3 multi-origin resilience — research second Hetzner location, design warm standby + DNS failover + DB/Redis replication

## Feature List (Future Enhancements)

- [ ] Admin backend
  - [ ] Analytics: implement a settings entry to set matomo url and page id
- [ ] User frontend
  - [ ] Chat: add user registration and login flows
  - [ ] Chat: private DM history and search
  - [ ] Analytics: add javascript snippet to send pageview events to matomo