fix: replace any casts with typed casts for Supabase join results

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AWxyMibCuGGtSQSqfajDQ7

app/api/dashboard/stats/route.ts

@@ -26,7 +26,7 @@ export async function GET() {
 
   const siteMap: Record<string, number> = {}
   for (const r of rows) {
-    const name = (r.sites as any)?.name ?? 'Unknown'
+    const name = (r.sites as { name: string } | null)?.name ?? 'Unknown'
     siteMap[name] = (siteMap[name] ?? 0) + 1
   }
   const by_site = Object.entries(siteMap).map(([name, count]) => ({ name, count }))

app/api/incidents/route.ts

@@ -1,6 +1,6 @@
 import { NextResponse } from 'next/server'
 import { createClient } from '@/lib/supabase/server'
-import { validateIncidentInput } from '@/lib/incidents/validate'
+import { validateIncidentInput, type IncidentType, type MedicalStatus } from '@/lib/incidents/validate'
 import { uploadEvidenceFile, type EvidenceStage } from '@/lib/supabase/storage'
 import { sendNewIncidentEmail } from '@/lib/notifications/email'
 
@@ -28,11 +28,11 @@ export async function POST(request: Request) {
 
   const input = {
     zone_token: body.zone_token as string,
-    incident_type: body.incident_type as any,
+    incident_type: body.incident_type as IncidentType,
     description: body.description as string,
     injury_involved: body.injury_involved === 'true' || body.injury_involved === true,
     asset_involved: body.asset_involved === 'true' || body.asset_involved === true,
-    medical_status: body.medical_status as any || undefined,
+    medical_status: body.medical_status as MedicalStatus | undefined || undefined,
   }
 
   const validation = validateIncidentInput(input)