feat: add Django web app, CloudKit sync, dashboard, and game_datetime_utc export

Adds the full Django application layer on top of sportstime_parser:
- core: Sport, Team, Stadium, Game models with aliases and league structure
- scraper: orchestration engine, adapter, job management, Celery tasks
- cloudkit: CloudKit sync client, sync state tracking, sync jobs
- dashboard: staff dashboard for monitoring scrapers, sync, review queue
- notifications: email reports for scrape/sync results
- Docker setup for deployment (Dockerfile, docker-compose, entrypoint)

Game exports now use game_datetime_utc (ISO 8601 UTC) instead of
venue-local date+time strings, matching the canonical format used
by the iOS app.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -0,0 +1,131 @@
+# CLAUDE.md
+
+This file provides context for Claude Code when working on this project.
+
+## Project Overview
+
+SportsTime is a Django-based sports data pipeline that scrapes game schedules from official sources, normalizes the data, stores it in PostgreSQL, and syncs to CloudKit for iOS app consumption.
+
+## Architecture
+
+```
+┌─────────────────┐     ┌──────────────┐     ┌─────────────┐     ┌──────────┐
+│  Data Sources   │ ──▶ │   Scrapers   │ ──▶ │  PostgreSQL │ ──▶ │ CloudKit │
+│ (ESPN, leagues) │     │ (sportstime_ │     │  (Django)   │     │  (iOS)   │
+└─────────────────┘     │   parser)    │     └─────────────┘     └──────────┘
+                        └──────────────┘
+```
+
+## Key Directories
+
+- `core/` - Django models: Sport, Team, Stadium, Game, Conference, Division, Aliases
+- `scraper/` - Scraper orchestration, adapter, job management
+- `sportstime_parser/` - Standalone scraper library (ESPN, league APIs)
+- `cloudkit/` - CloudKit sync client and job management
+- `dashboard/` - Staff dashboard for monitoring and controls
+- `templates/` - Django templates for dashboard UI
+
+## Data Flow
+
+1. **Scraper runs** (manual or scheduled via Celery Beat)
+2. **sportstime_parser** fetches from ESPN/league APIs
+3. **Adapter** normalizes data and resolves team/stadium names
+4. **Django models** store normalized data with CloudKit sync flags
+5. **CloudKit sync** pushes pending records to iCloud
+
+## Models Hierarchy
+
+```
+Sport
+├── Conference
+│   └── Division
+│       └── Team (has TeamAliases)
+├── Stadium (has StadiumAliases)
+└── Game (references Team, Stadium)
+```
+
+## Name Resolution
+
+Team and stadium names from scraped data are resolved via:
+1. Direct ID match (canonical IDs from scraper)
+2. Database aliases (TeamAlias/StadiumAlias with date validity)
+3. Direct name/abbreviation match
+
+Aliases support validity dates for historical names (e.g., team relocations, stadium naming rights).
+
+## Common Tasks
+
+### Run a scraper
+```bash
+docker-compose exec web python manage.py shell
+>>> from scraper.tasks import run_scraper_task
+>>> run_scraper_task.delay(config_id)
+```
+
+### Check scraper status
+Visit `/dashboard/scraper-status/` or check `ScrapeJob` model.
+
+### Add team/stadium alias
+Use Django admin at `/admin/core/teamalias/` or `/admin/core/stadiumalias/`.
+
+### Export/Import data
+All admin models support import/export (JSON, CSV, XLSX) via django-import-export.
+
+### Sync to CloudKit
+```bash
+docker-compose exec web python manage.py shell
+>>> from cloudkit.tasks import run_cloudkit_sync
+>>> run_cloudkit_sync.delay(config_id)
+```
+
+## Environment
+
+- **Docker Compose** for local development
+- **PostgreSQL** database
+- **Redis** for Celery broker
+- **Celery** for async tasks and scheduled jobs
+
+## Key Files
+
+- `sportstime/settings.py` - Django settings
+- `scraper/engine/adapter.py` - Bridges sportstime_parser to Django
+- `scraper/engine/db_alias_loader.py` - Database alias resolution
+- `core/resources.py` - Import/export resource definitions
+- `docker-compose.yml` - Container orchestration
+
+## Supported Sports
+
+| Code | Sport | Season Type |
+|------|-------|-------------|
+| nba | NBA Basketball | split (Oct-Jun) |
+| mlb | MLB Baseball | calendar (Mar-Oct) |
+| nfl | NFL Football | split (Sep-Feb) |
+| nhl | NHL Hockey | split (Oct-Jun) |
+| mls | MLS Soccer | calendar (Feb-Nov) |
+| wnba | WNBA Basketball | calendar (May-Sep) |
+| nwsl | NWSL Soccer | calendar (Mar-Nov) |
+
+## Testing
+
+```bash
+docker-compose exec web pytest
+```
+
+## Useful Commands
+
+```bash
+# Restart containers
+docker-compose restart
+
+# Rebuild after requirements change
+docker-compose down && docker-compose up -d --build
+
+# View logs
+docker-compose logs -f web
+
+# Django shell
+docker-compose exec web python manage.py shell
+
+# Database shell
+docker-compose exec db psql -U sportstime -d sportstime
+```