Fix DELETE sending empty JSON body, add repair_note to allowed file entity types

API client no longer sets Content-Type: application/json on requests
without a body (fixes DELETE 400 errors). Added repair_note to the
allowed entityTypes whitelist for file uploads so photos can be
attached to repair notes.

packages/admin/src/lib/api-client.ts

@@ -15,8 +15,10 @@ class ApiError extends Error {
 async function request<T>(method: string, path: string, body?: unknown): Promise<T> {
   const { token } = useAuthStore.getState()
 
-  const headers: Record<string, string> = {
-    'Content-Type': 'application/json',
+  const headers: Record<string, string> = {}
+
+  if (body) {
+    headers['Content-Type'] = 'application/json'
   }
 
   if (token) {

packages/backend/src/routes/v1/files.ts

@@ -42,7 +42,7 @@ export const fileRoutes: FastifyPluginAsync = async (app) => {
     }
 
     // Validate entityType is a known type
-    const allowedEntityTypes = ['user', 'member', 'member_identifier', 'product', 'rental_agreement', 'repair_ticket']
+    const allowedEntityTypes = ['user', 'member', 'member_identifier', 'product', 'rental_agreement', 'repair_ticket', 'repair_note']
     if (!allowedEntityTypes.includes(entityType)) {
       throw new ValidationError(`Invalid entityType: ${entityType}`)
     }