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)

events/README.md

@@ -0,0 +1,78 @@
+# Events App
+
+Calendar and event booking service for the Rose Ash cooperative platform. Manages calendars, time slots, calendar entries (bookings), tickets, and ticket types.
+
+## 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/                 # Events-domain models
+  calendars.py          #   Calendar, CalendarEntry, CalendarSlot,
+                        #   TicketType, Ticket, CalendarEntryPost
+bp/                     # Blueprints
+  calendars/            #   Calendar listing
+  calendar/             #   Single calendar view and admin
+  calendar_entries/     #   Calendar entries listing
+  calendar_entry/       #   Single entry view and admin
+  day/                  #   Day view and admin
+  slots/                #   Slot listing
+  slot/                 #   Single slot management
+  ticket_types/         #   Ticket type listing
+  ticket_type/          #   Single ticket type management
+  tickets/              #   Ticket listing
+  ticket_admin/         #   Ticket administration
+  markets/              #   Page-scoped marketplace views
+  payments/             #   Payment-related views
+services/               # register_domain_services() — wires calendar + market + cart
+shared/                 # Submodule -> git.rose-ash.com/coop/shared.git
+```
+
+## Models
+
+All events-domain models live in `models/calendars.py`:
+
+| Model | Description |
+|-------|-------------|
+| **Calendar** | Container for entries, scoped to a page via `container_type + container_id` |
+| **CalendarEntry** | A bookable event/time slot. Has `state` (pending/ordered/provisional), `cost`, ownership (`user_id`/`session_id`), and `order_id` (plain integer, no FK) |
+| **CalendarSlot** | Recurring time bands (day-of-week + time range) within a calendar |
+| **TicketType** | Named ticket categories with price and count |
+| **Ticket** | Individual ticket with unique code, state, and `order_id` (plain integer, no FK) |
+| **CalendarEntryPost** | Junction linking entries to content via `content_type + content_id` |
+
+`order_id` on CalendarEntry and Ticket is a plain integer column — no FK constraint to the orders table. The cart app writes these values via service calls, not directly.
+
+## Cross-Domain Communication
+
+- `services.market.*` — marketplace queries for page views
+- `services.cart.*` — cart summary for context processor
+- `services.federation.*` — AP publishing for new entries
+- `shared.services.navigation` — site navigation tree
+
+## Migrations
+
+This app does **not** run Alembic migrations on startup. Migrations are managed in the `shared/` submodule and run from the blog app's entrypoint.
+
+## 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 0.0.0.0:8003
+```