Monorepo: consolidate 7 repos into one

Combines shared, blog, market, cart, events, federation, and account
into a single repository. Eliminates submodule sync, sibling model
copying at build time, and per-app CI orchestration.

Changes:
- Remove per-app .git, .gitmodules, .gitea, submodule shared/ dirs
- Remove stale sibling model copies from each app
- Update all 6 Dockerfiles for monorepo build context (root = .)
- Add build directives to docker-compose.yml
- Add single .gitea/workflows/ci.yml with change detection
- Add .dockerignore for monorepo build context
- Create __init__.py for federation and account (cross-app imports)

market/README.md

@@ -0,0 +1,56 @@
+# Market App
+
+Product browsing and marketplace service for the Rose Ash cooperative. Displays products scraped from Suma Wholesale.
+
+## Architecture
+
+One of five Quart microservices sharing a single PostgreSQL database:
+
+| App | Port | Domain |
+|-----|------|--------|
+| blog (coop) | 8000 | Auth, blog, admin, menus, snippets |
+| **market** | 8001 | Product browsing, Suma scraping |
+| cart | 8002 | Shopping cart, checkout, orders |
+| events | 8003 | Calendars, bookings, tickets |
+| federation | 8004 | ActivityPub, fediverse social |
+
+## Structure
+
+```
+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 (+ re-export stubs)
+bp/                     # Blueprints
+  market/               #   Market root, navigation, category listing
+  browse/               #   Product browsing with filters and infinite scroll
+  product/              #   Product detail pages
+  cart/                 #   Page-scoped cart views
+  api/                  #   Product sync API (used by scraper)
+scrape/                 # Suma Wholesale scraper
+services/               # register_domain_services() — wires market + cart
+shared/                 # Submodule -> git.rose-ash.com/coop/shared.git
+```
+
+## Cross-Domain Communication
+
+- `services.cart.*` — cart summary via CartService protocol
+- `services.federation.*` — AP publishing via FederationService protocol
+- `shared.services.navigation` — site navigation tree
+
+## Scraping
+
+```bash
+bash scrape.sh        # Full Suma Wholesale catalogue
+bash scrape-test.sh   # Limited test scrape
+```
+
+## Running
+
+```bash
+export DATABASE_URL_ASYNC=postgresql+asyncpg://user:pass@localhost/coop
+export REDIS_URL=redis://localhost:6379/0
+export SECRET_KEY=your-secret-key
+
+hypercorn app:app --bind 0.0.0.0:8001
+```