fix: signed URLs for private bucket, 10MB server-side limit, safe auth destructuring

components/incidents/file-upload.tsx

@@ -1,7 +1,6 @@
 'use client'
 
 import { useRef, useState } from 'react'
-import type { EvidenceStage } from '@/lib/supabase/storage'
 
 const ACCEPTED = [
   'image/jpeg', 'image/png', 'image/heic', 'image/webp',
@@ -17,12 +16,11 @@ const MAX_SIZE = {
 }
 
 interface Props {
-  stage: EvidenceStage
   onFilesChange: (files: File[]) => void
   disabled?: boolean
 }
 
-export function FileUpload({ stage, onFilesChange, disabled = false }: Props) {
+export function FileUpload({ onFilesChange, disabled = false }: Props) {
   const inputRef = useRef<HTMLInputElement>(null)
   const [files, setFiles] = useState<File[]>([])
   const [errors, setErrors] = useState<string[]>([])