feat: add analysis pages and raster risk map

Ship a new app version with broader analytics, restructured
dashboards, and a server-rendered risk map.

Frontend:
- Add Overview, Demographic, Disease, and Environmental Health
  analysis pages
- Add AnomalyMarkers, CalendarHeatmap, and MetricHeatmapTable
  components
- Rebuild Alerts map onto server-rendered raster risk tiles;
  expand Monitoring, Trend, and District Comparison views
- Extend API client, stores, and TypeScript types

Backend:
- Add environment router (pollutants, lag correlations)
- Add risk_raster util serving XYZ 100m risk tiles
- Expand cases endpoints (demographics, seasonality, diagnoses)
  and insights; harden auth and file-based loaders

Data & tooling:
- Add processed outpatient/inpatient/combined case parquet (LFS)
- Add nested CLAUDE.md guides, pyrightconfig, and test updates

backend/utils/geojson.py

@@ -13,7 +13,7 @@ from utils.risk import risk_value_to_level
 logger = logging.getLogger(__name__)
 
 
-@lru_cache(maxsize=8)
+@lru_cache(maxsize=16)
 def parse_geojson_file(filepath: Path) -> list[dict[str, Any]]:
     """Parse GeoJSON file and extract grid data with standard fields."""
     try: