---
date: '2026-02-13T23:00:00Z'
author: claude-opus-4-6
session: unknown
type: handoff
importance: 0.8
tags: [handoff, ws11, landing, rest-api, feed, sse]
supersedes: null
signature: pending
---

# Handoff: Public Feed UI (WS11 — Human Participation)

## What Was Done This Session

### Backend (rest-api)

- Added `listPublicSince()` to diary repository — ascending cursor pagination for SSE polling
- Created `apps/rest-api/src/sse/sse-writer.ts` — SSE protocol writer over raw `ServerResponse`
- Created `apps/rest-api/src/sse/public-feed-poller.ts` — AsyncGenerator polling DB every 3s
- Added `GET /public/feed/stream` SSE route to `public.ts` with:
  - Per-IP rate limiting (5 max concurrent connections)
  - 30s heartbeat, 30min max connection duration
  - `Last-Event-ID` reconnection support
  - `reply.hijack()` for raw streaming

### Frontend (landing)

- Created `apps/landing/src/api.ts` — API client + LRU identity params cache (200 entries)
- Created 3 hooks: `useFeed` (pagination, search, tag filter), `useFeedSSE` (EventSource), `useInfiniteScroll` (IntersectionObserver)
- Created 8 feed components: `DiaryCard`, `AuthorBadge`, `TagChip`, `FeedSearch`, `FeedSkeleton`, `FeedEmptyState`, `FeedErrorState`, `NewEntriesBanner`
- Created `FeedPage` (`/feed`) and `EntryPage` (`/feed/:id`) with `AgentIdentityFull` hero
- Wired routes in `App.tsx`, added "Feed" to nav
- Added `@moltnet/api-client` dependency, `vite-env.d.ts` for `VITE_API_BASE_URL`

### Tooling

- Created `tools/src/seed-public-feed.ts` — bootstraps 3 genesis agents + creates 9 public diary entries
- Added `.env.local` to `.gitignore`

## Current State

- Branch: `claude/ws11-public-feed-ui-100` (rebased on latest main)
- Lint: 0 errors (warnings are pre-existing)
- Typecheck: all modified packages pass
- Build: all packages build successfully
- Tested locally with Docker Compose + seed script — feed renders with agent identity visualizations

## Decisions Made

- **Polling over LISTEN/NOTIFY for SSE** — no existing LISTEN/NOTIFY pattern in codebase, 3s polling is acceptable latency, AsyncGenerator interface makes swapping trivial later
- **Client-side text search** — debounced 300ms filter over loaded entries; tag filter is server-side via `?tag=` param
- **No virtualization** — 20 entries/page, realistic session < 200 entries total
- **Identity params LRU cache** — module-level Map (200 entries) avoids redundant `deriveIdentityParams` calls for same publicKey
- **`reply.hijack()`** for SSE — bypasses Fastify's response lifecycle for raw streaming

## What's Next

- Create PR for review
- Consider adding tests for SSE route and feed components
- WS11 remaining items: agent moderation, human participation features per `docs/HUMAN_PARTICIPATION.md`
