diff --git a/README.md b/README.md
index 26f5fcd..6d9a840 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Product browsing and marketplace service for the Rose Ash cooperative. Displays
 
 ## Architecture
 
-One of four Quart microservices sharing a single PostgreSQL database:
+One of five Quart microservices sharing a single PostgreSQL database:
 
 | App | Port | Domain |
 |-----|------|--------|
@@ -12,6 +12,7 @@ One of four Quart microservices sharing a single PostgreSQL database:
 | **market** | 8001 | Product browsing, Suma scraping |
 | cart | 8002 | Shopping cart, checkout, orders |
 | events | 8003 | Calendars, bookings, tickets |
+| federation | 8004 | ActivityPub, fediverse social |
 
 ## Structure
 
@@ -19,9 +20,7 @@ One of four Quart microservices sharing a single PostgreSQL database:
 app.py                  # Application factory (create_base_app + blueprints)
 path_setup.py           # Adds project root + app dir to sys.path
 config/app-config.yaml  # App URLs, feature flags
-models/                 # Market-domain models
-  market.py             #   Product, Category, CartItem
-  market_place.py       #   MarketPlace (page-scoped marketplace)
+models/                 # Market-domain models (+ re-export stubs)
 bp/                     # Blueprints
   market/               #   Market root, navigation, category listing
   browse/               #   Product browsing with filters and infinite scroll
@@ -29,39 +28,21 @@ bp/                     # Blueprints
   cart/                 #   Page-scoped cart views
   api/                  #   Product sync API (used by scraper)
 scrape/                 # Suma Wholesale scraper
-  get_auth.py           #   Authentication
-  listings.py           #   Product listing pages
-  nav.py                #   Category navigation
-  product/              #   Individual product scraping
-  build_snapshot/       #   Build product snapshots
-  persist_snapshot/     #   Save snapshots to DB
-  persist_api/          #   Save via API
-templates/              # Jinja2 templates
-entrypoint.sh           # Docker entrypoint
-Dockerfile
-shared/                 # Submodule → git.rose-ash.com/coop/shared.git
-glue/                   # Submodule → git.rose-ash.com/coop/glue.git
+services/               # register_domain_services() — wires market + cart
+shared/                 # Submodule -> git.rose-ash.com/coop/shared.git
 ```
 
-## Dependencies
+## Cross-Domain Communication
 
-**Cross-app model imports:**
-- `blog.models.ghost_content.Post` — `app.py` hydrates page data for marketplace views
-
-**Glue services:**
-- `glue.services.navigation.get_navigation_tree` — context processor builds site nav
-
-**Internal APIs:**
-- Calls `GET /internal/cart/summary` — context processor for cart widget
+- `services.cart.*` — cart summary via CartService protocol
+- `services.federation.*` — AP publishing via FederationService protocol
+- `shared.services.navigation` — site navigation tree
 
 ## Scraping
 
 ```bash
-# Full scrape (Suma Wholesale catalogue)
-bash scrape.sh
-
-# Test scraping (limited)
-bash scrape-test.sh
+bash scrape.sh        # Full Suma Wholesale catalogue
+bash scrape-test.sh   # Limited test scrape
 ```
 
 ## Running
@@ -70,15 +51,6 @@ bash scrape-test.sh
 export DATABASE_URL_ASYNC=postgresql+asyncpg://user:pass@localhost/coop
 export REDIS_URL=redis://localhost:6379/0
 export SECRET_KEY=your-secret-key
-export SUMA_USER=your-suma-username
-export SUMA_PASSWORD=your-suma-password
 
-hypercorn app:app --reload --bind 0.0.0.0:8001
-```
-
-## Docker
-
-```bash
-docker build -t market .
-docker run -p 8001:8000 --env-file .env market
+hypercorn app:app --bind 0.0.0.0:8001
 ```
diff --git a/app.py b/app.py
index 266adbf..b3a8acb 100644
--- a/app.py
+++ b/app.py
@@ -1,5 +1,5 @@
 from __future__ import annotations
-import path_setup  # noqa: F401  # adds shared_lib to sys.path
+import path_setup  # noqa: F401  # adds shared/ to sys.path
 
 from pathlib import Path
 
diff --git a/shared b/shared
index bccfff0..d697709 160000
--- a/shared
+++ b/shared
@@ -1 +1 @@
-Subproject commit bccfff0c699fdf9e3ee7c911af1f17a5294943f6
+Subproject commit d697709f60a71941880f4288be469913d11ce967