trails/openspec/changes/social-feed/tasks.md

1. Schema

• 1.1 Add follows table to packages/db/src/schema/journal.ts: id UUID PK, follower_id TEXT NOT NULL REFERENCES users, followed_actor_iri TEXT NOT NULL (forward-compatible with federation), followed_user_id TEXT REFERENCES users (always populated for local follows in this change), accepted_at TIMESTAMPTZ (always set to now() in this change but kept nullable for future Pending state), created_at TIMESTAMPTZ DEFAULT now(). Unique (follower_id, followed_actor_iri). Indexes (follower_id, created_at DESC) and (followed_actor_iri)
• 1.2 Add profile_visibility TEXT NOT NULL DEFAULT 'public' ('public' | 'private') to journal.users. Existing rows pick up the default (= public), preserving current effective behavior for everyone
• 1.3 Add a small helper localActorIri(username) returning https://{DOMAIN}/users/{username} to keep IRI construction consistent across the codebase
• 1.4 Run pnpm db:push locally and confirm migration is clean (no prompts, no ambiguity)
• 1.5 Update the privacy manifest to document the follows relation (which user follows whom on this instance, when) and the new profile_visibility setting

2. Follow / unfollow API

• 2.1 Add follow.server.ts with followUser(followerId, targetUsername) and unfollowUser(followerId, targetUsername) that resolve the local target, refuse if profile_visibility = 'private' or self-follow, write/delete the row, and return the new state
• 2.2 POST /api/users/:username/follow route: session-bound, calls followUser, returns 200 with new state or 4xx on refusal
• 2.3 POST /api/users/:username/unfollow route: session-bound, calls unfollowUser, returns 200 with new state
• 2.4 Unit tests: follow/unfollow happy path, refusal for private profile, self-follow rejected, idempotent follow/unfollow

3. Follower / following collections

• 3.1 Queries for follower list and following list of a given user, paginated (50/page), reverse-chron on accepted_at
• 3.2 Routes /users/:username/followers and /users/:username/following rendering paginated lists with display name + handle + small profile link
• 3.3 Query + UI for follower and following counts on /users/:username

4. Social feed

• 4.1 Query listSocialFeed(followerId, limit, cursor) joining follows → activities, returning rows where accepted_at IS NOT NULL AND a.visibility = 'public', reverse-chronological by created_at
• 4.2 Route /feed (signed-in only; redirects to /auth/login when anonymous) rendering the aggregated cards; reuse the existing activity-card component from the home visitor feed
• 4.3 Empty state: "You're not following anyone yet" with a link to the instance public feed at /
• 4.4 Register the route in apps/journal/app/routes.ts
• 4.5 Add a "Feed" link to the signed-in nav + the personal dashboard header next to "New Activity"

5. Profile page + visibility

• 5.1 Follow / Unfollow button component — state pulled from the viewer's session + follows row, action submits to the new API route
• 5.2 Integrate on /users/:username above the public route/activity list; hide for the profile owner
• 5.3 Follower/following count display linking to the new collection pages
• 5.4 Update /users/:username loader to gate on profile_visibility = 'public' AND has-public-content (preserve indistinguishable 404)
• 5.5 Add a "Profile visibility" toggle (Public / Private) to /settings/profile, with a one-line explainer of what each mode does
• 5.6 Owner-only redirect or "your profile isn't public yet" view for owners whose profile would 404 to visitors

6. Testing

• 6.1 Unit tests for listSocialFeed query: only follows of accepted_at IS NOT NULL, only public activities, pagination boundary
• 6.2 E2E: register two local users, A follows B, B posts a public activity → A sees it on /feed; B posts a private activity → A does not
• 6.3 E2E: Follow button transitions (not following → Follow → Unfollow → not following), profile counts update
• 6.4 E2E: /feed redirects anonymous visitors to /auth/login
• 6.5 E2E: empty /feed renders the empty state and link to public feed
• 6.6 E2E (profile_visibility): owner flips to private → /users/:username returns 404 even with public content, the Follow button vanishes for any prospective follower. Owner flips back to public → previous behavior restored

7. Rollout

• 7.1 Schema ships via drizzle-kit push --force — additive only, no row backfill needed (column defaults handle existing users)
• 7.2 Post-deploy: smoke-follow bruno (demo-bot) from a test account, confirm bruno's public activity appears on /feed
• 7.3 (Follow-up change) social-federation adds Fedify, actor objects, signed inbox/outbox, remote follow + ingestion. The follows schema in this change supports those without migration
• 7.4 (Follow-up change) Consider a "Local" tab alongside the Following feed that surfaces the instance public feed for signed-in users — not in this change