mono/CLAUDE.md

# Rose Ash Monorepo

Cooperative web platform: federated content, commerce, events, and media processing. Each domain runs as an independent Quart microservice with its own database, communicating via HMAC-signed internal HTTP and ActivityPub events.

## Deployment

- **Do NOT push** until explicitly told to. Pushes reload code to dev automatically.

## Project Structure

```
blog/           # Content management, Ghost CMS sync, navigation, WYSIWYG editor
market/         # Product catalog, marketplace pages, web scraping
cart/           # Shopping cart CRUD, checkout (delegates order creation to orders)
events/         # Calendar & event management, ticketing
federation/     # ActivityPub social hub, user profiles
account/        # OAuth2 authorization server, user dashboard, membership
orders/         # Order history, SumUp payment/webhook handling, reconciliation
relations/      # (internal) Cross-domain parent/child relationship tracking
likes/          # (internal) Unified like/favourite tracking across domains
shared/         # Shared library: models, infrastructure, templates, static assets
artdag/         # Art DAG — media processing engine (separate codebase, see below)
```

### Shared Library (`shared/`)

```
shared/
  models/          # Canonical SQLAlchemy ORM models for all domains
  db/              # Async session management, per-domain DB support, alembic helpers
  infrastructure/  # App factory, OAuth, ActivityPub, fragments, internal auth, Jinja
  services/        # Domain service implementations + DI registry
  contracts/       # DTOs and service protocols
  browser/         # Middleware, Redis caching, CSRF, error handlers
  events/          # Activity bus + background processor (AP-shaped events)
  config/          # YAML config loading (frozen/readonly)
  static/          # Shared CSS, JS, images
  templates/       # Base HTML layouts, partials (inherited by all apps)
```

### Art DAG (`artdag/`)

Federated content-addressed DAG execution engine for distributed media processing.

```
artdag/
  core/      # DAG engine (artdag package) — nodes, effects, analysis, planning
  l1/        # L1 Celery rendering server (FastAPI + Celery + Redis + PostgreSQL)
  l2/        # L2 ActivityPub registry (FastAPI + PostgreSQL)
  common/    # Shared templates, middleware, models (artdag_common package)
  client/    # CLI client
  test/      # Integration & e2e tests
```

## Tech Stack

**Web platform:** Python 3.11+, Quart (async Flask), SQLAlchemy (asyncpg), Jinja2, HTMX, PostgreSQL, Redis, Docker Swarm, Hypercorn.

**Art DAG:** FastAPI, Celery, JAX (CPU/GPU), IPFS/Kubo, Pydantic.

## Key Commands

### Development
```bash
./dev.sh                        # Start all services + infra (db, redis, pgbouncer)
./dev.sh blog market            # Start specific services + infra
./dev.sh --build blog           # Rebuild image then start
./dev.sh down                   # Stop everything
./dev.sh logs blog              # Tail service logs
```

### Deployment
```bash
./deploy.sh                     # Auto-detect changed apps, build + push + restart
./deploy.sh blog market         # Deploy specific apps
./deploy.sh --all               # Deploy everything
```

### Art DAG
```bash
cd artdag/l1 && pytest tests/              # L1 unit tests
cd artdag/core && pytest tests/            # Core unit tests
cd artdag/test && python run.py            # Full integration pipeline
cd artdag/l1 && ruff check .               # Lint
cd artdag/l1 && mypy app/types.py app/routers/recipes.py tests/
```

## Architecture Patterns

### Web Platform

- **App factory:** `create_base_app(name, context_fn, before_request_fns, domain_services_fn)` in `shared/infrastructure/factory.py` — creates Quart app with DB, Redis, CSRF, OAuth, AP, session management
- **Blueprint pattern:** Each blueprint exposes `register() -> Blueprint`, handlers stored in `_handlers` dict
- **Per-service database:** Each service has own PostgreSQL DB via PgBouncer; cross-domain data fetched via HTTP
- **Alembic per-service:** Each service declares `MODELS` and `TABLES` in `alembic/env.py`, delegates to `shared.db.alembic_env.run_alembic()`
- **Inter-service reads:** `fetch_data(service, query, params)` → GET `/internal/data/{query}` (HMAC-signed, 3s timeout)
- **Inter-service writes:** `call_action(service, action, payload)` → POST `/internal/actions/{action}` (HMAC-signed, 5s timeout)
- **Inter-service AP inbox:** `send_internal_activity()` → POST `/internal/inbox` (HMAC-signed, AP-shaped activities for cross-service writes)
- **Fragments:** HTML fragments fetched cross-service via `fetch_fragments()` for composing shared UI (nav, cart mini, auth menu)
- **Soft deletes:** Models use `deleted_at` column pattern
- **Context processors:** Each app provides its own `context_fn` that assembles template context from local DB + cross-service fragments

### Auth

- **Account** is the OAuth2 authorization server; all other apps are OAuth clients
- Per-app first-party session cookies (Safari ITP compatible), synchronized via device ID
- Grant verification: apps check grant validity against account DB (cached in Redis)
- Silent SSO: `prompt=none` OAuth flow for automatic cross-app login
- ActivityPub: RSA signatures, per-app virtual actor projections sharing same keypair

### Art DAG

- **3-Phase Execution:** Analyze → Plan → Execute (tasks in `artdag/l1/tasks/`)
- **Content-Addressed:** All data identified by SHA3-256 hashes or IPFS CIDs
- **S-Expression Effects:** Composable effect language in `artdag/l1/sexp_effects/`
- **Storage:** Local filesystem, S3, or IPFS backends
- L1 ↔ L2: scoped JWT tokens; L2: password + OAuth SSO

## Domains

| Service | Public URL | Dev Port |
|---------|-----------|----------|
| blog | blog.rose-ash.com | 8001 |
| market | market.rose-ash.com | 8002 |
| cart | cart.rose-ash.com | 8003 |
| events | events.rose-ash.com | 8004 |
| federation | federation.rose-ash.com | 8005 |
| account | account.rose-ash.com | 8006 |
| relations | (internal only) | 8008 |
| likes | (internal only) | 8009 |
| orders | orders.rose-ash.com | 8010 |

## Key Config Files

- `docker-compose.yml` / `docker-compose.dev.yml` — service definitions, env vars, volumes
- `deploy.sh` / `dev.sh` — deployment and development scripts
- `shared/infrastructure/factory.py` — app factory (all services use this)
- `{service}/alembic/env.py` — per-service migration config
- `_config/app-config.yaml` — runtime YAML config (mounted into containers)

## Tools

- Use Context7 MCP for up-to-date library documentation
- Playwright MCP is available for browser automation/testing