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>

core/models/sport.py

@@ -0,0 +1,78 @@
+from django.db import models
+from simple_history.models import HistoricalRecords
+
+
+class Sport(models.Model):
+    """
+    Sport configuration model.
+    """
+    SEASON_TYPE_CHOICES = [
+        ('split', 'Split Year (e.g., 2024-25)'),
+        ('single', 'Single Year (e.g., 2024)'),
+    ]
+
+    code = models.CharField(
+        max_length=10,
+        primary_key=True,
+        help_text='Sport code (e.g., nba, mlb, nfl)'
+    )
+    name = models.CharField(
+        max_length=100,
+        help_text='Full name (e.g., National Basketball Association)'
+    )
+    short_name = models.CharField(
+        max_length=20,
+        help_text='Short name (e.g., NBA)'
+    )
+    season_type = models.CharField(
+        max_length=10,
+        choices=SEASON_TYPE_CHOICES,
+        help_text='Whether season spans two years or one'
+    )
+    expected_game_count = models.PositiveIntegerField(
+        default=0,
+        help_text='Expected number of regular season games'
+    )
+    season_start_month = models.PositiveSmallIntegerField(
+        default=1,
+        help_text='Month when season typically starts (1-12)'
+    )
+    season_end_month = models.PositiveSmallIntegerField(
+        default=12,
+        help_text='Month when season typically ends (1-12)'
+    )
+    icon_name = models.CharField(
+        max_length=50,
+        blank=True,
+        help_text='SF Symbol name (e.g., baseball.fill, basketball.fill)'
+    )
+    color_hex = models.CharField(
+        max_length=10,
+        blank=True,
+        help_text='Brand color hex (e.g., #CE1141)'
+    )
+    is_active = models.BooleanField(
+        default=True,
+        help_text='Whether this sport is actively being scraped'
+    )
+
+    # Metadata
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    # Audit trail
+    history = HistoricalRecords()
+
+    class Meta:
+        ordering = ['name']
+        verbose_name = 'Sport'
+        verbose_name_plural = 'Sports'
+
+    def __str__(self):
+        return self.short_name
+
+    def get_season_display(self, year: int) -> str:
+        """Return display string for a season (e.g., '2024-25' or '2024')."""
+        if self.season_type == 'split':
+            return f"{year}-{str(year + 1)[-2:]}"
+        return str(year)