chore: Dockerfile, README, LICENSE, .env.example, CI workflows (lint/test/deploy)

README.md

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+# Thoughts
+
+A self-hosted microblogging server with full ActivityPub federation. Write short posts, follow people on Mastodon and other Fediverse servers, and receive their posts in your feed. Built in Rust with a Next.js frontend.
+
+## Features
+
+- Short-form posts (thoughts) with replies, boosts, and likes
+- Full ActivityPub federation — follow/unfollow remote actors, accept/reject followers, federated content broadcast as `Note` objects, paginated outbox, NodeInfo discovery, WebFinger, shared inbox, actor profile sync
+- Federation moderation — per-instance domain blocking, per-user actor blocking with `Block` activity delivery, delivery filter excludes blocked actors and blocked-domain inboxes
+- Async event fan-out via NATS — notifications and AP delivery run in a separate worker process
+- JWT authentication (Bearer token)
+- OpenAPI documentation at `/docs` (Swagger UI) and `/scalar` (Scalar)
+- Full-text search over thoughts and users via PostgreSQL trigram indexes
+- Top friends — pin up to 5 users as highlighted contacts
+- API keys for third-party client access
+- Home feed, public feed, and per-user thought timelines
+
+## Architecture
+
+Hexagonal (Ports & Adapters) with Domain-Driven Design:
+
+```
+domain              — pure types and port trait definitions, no external deps
+application         — use cases and event processing services (business logic)
+api-types           — shared REST API request/response DTOs
+presentation        — Axum HTTP router, OpenAPI spec, composition root for the API process
+bootstrap           — binary: thoughts (API server)
+worker              — binary: thoughts-worker (event consumer — notifications, AP fan-out)
+adapters/
+  auth                 — JWT issuance and validation, Argon2 password hashing
+  postgres             — PostgreSQL repositories for all domain entities
+  postgres-search      — PostgreSQL trigram full-text search
+  postgres-federation  — PostgreSQL-backed federation repository
+  activitypub-base     — core ActivityPub protocol types, ActivityPubService, federation middleware
+  activitypub          — project-specific AP wiring (ThoughtsObjectHandler, inbox/outbox)
+  nats                 — NATS transport implementing Transport + MessageSource ports
+  event-payload        — shared event serialization DTOs
+  event-transport      — Transport trait + EventPublisherAdapter / MessageSource + EventConsumerAdapter
+```
+
+## Prerequisites
+
+- Rust stable (1.80+)
+- PostgreSQL 15+
+- NATS (optional — federation and notifications still work without it, events queue in-process)
+
+## Environment Variables
+
+Copy `.env.example` to `.env` and fill in your values:
+
+```env
+DATABASE_URL=postgres://postgres:password@localhost:5432/thoughts
+JWT_SECRET=change-me
+BASE_URL=http://localhost:3000
+NATS_URL=nats://localhost:4222   # optional
+```
+
+See `.env.example` for all available options.
+
+## Run
+
+```bash
+# API server (runs migrations automatically on startup)
+cargo run -p bootstrap
+
+# Event worker — federation fan-out and notifications (separate terminal)
+cargo run -p worker
+```
+
+Both processes share the same PostgreSQL database. The worker is optional but required for ActivityPub delivery to remote servers.
+
+## Test
+
+```bash
+# Unit tests — no database required
+cargo test -p application
+
+# Full workspace (requires DATABASE_URL pointing to a running PostgreSQL)
+cargo test --workspace
+```
+
+The `application` crate contains unit tests for all event services and use cases backed by in-memory fakes from `domain`'s `test-helpers` feature. These are the fastest feedback loop for business logic.
+
+## API
+
+All REST endpoints are under the root path. Authentication uses `Authorization: Bearer <token>` obtained from `POST /auth/login`.
+
+Interactive API documentation is available at runtime:
+
+- **Swagger UI** — `http://localhost:3000/docs`
+- **Scalar** — `http://localhost:3000/scalar`
+
+## Docker
+
+The image contains both `thoughts` (API server) and `thoughts-worker` (event processor). Run them as separate containers:
+
+```bash
+docker build -t thoughts .
+
+# API server
+docker run -p 3000:3000 \
+  -e DATABASE_URL=postgres://postgres:password@db:5432/thoughts \
+  -e JWT_SECRET=change-me \
+  -e BASE_URL=https://yourdomain.example.com \
+  -e NATS_URL=nats://nats:4222 \
+  thoughts
+
+# Event worker (same image, different entrypoint)
+docker run \
+  -e DATABASE_URL=postgres://postgres:password@db:5432/thoughts \
+  -e BASE_URL=https://yourdomain.example.com \
+  -e NATS_URL=nats://nats:4222 \
+  --entrypoint ./thoughts-worker \
+  thoughts
+```
+
+## License
+
+MIT License. See [LICENSE](LICENSE).