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

frontend/src/stores/index.ts

@@ -172,7 +172,7 @@ interface MonitoringState {
   error: string | null;
   fetchGridFeatures: (date: string) => Promise<void>;
   fetchAggregatedData: (startDate: string, endDate: string, district?: string) => Promise<void>;
-  fetchDistrictCases: (diagnosis?: string) => Promise<void>;
+  fetchDistrictCases: (diagnosis?: string, startDate?: string, endDate?: string) => Promise<void>;
   clearError: () => void;
 }
 
@@ -219,10 +219,14 @@ export const useMonitoringStore = create<MonitoringState>((set) => ({
     }
   },
 
-  fetchDistrictCases: async (diagnosis) => {
+  fetchDistrictCases: async (diagnosis?: string, startDate?: string, endDate?: string) => {
     set({ isLoading: true, error: null });
     try {
-      const data = await caseApi.getDistricts(diagnosis ? { diagnosis } : undefined);
+      const params: Record<string, string> = {};
+      if (diagnosis) params.diagnosis = diagnosis;
+      if (startDate) params.start_date = startDate;
+      if (endDate) params.end_date = endDate;
+      const data = await caseApi.getDistricts(Object.keys(params).length > 0 ? params : undefined);
       const districts = Array.isArray(data) ? data : (data as any).districts || [];
       set({ districtCases: districts, isLoading: false });
     } catch (e) {