feat: Phase 5 — part counter update, replacement, replacement history

dashboard/lib/hooks.ts

@@ -1,6 +1,6 @@
 import useSWR from 'swr';
 import { fetcher, getTenantUrl } from './api';
-import type { Tenant, Machine, MachineDetail, EquipmentPart, InspectionTemplate, InspectionSession } from './types';
+import type { Tenant, Machine, MachineDetail, EquipmentPart, InspectionTemplate, InspectionSession, PartReplacementLog } from './types';
 
 export function useTenants() {
   const { data, error, isLoading, mutate } = useSWR<{ tenants: Tenant[] }>(
@@ -109,6 +109,22 @@ export function useTemplate(tenantId?: string, templateId?: string) {
   };
 }
 
+export function useReplacements(tenantId?: string, partId?: string) {
+  const url = tenantId && partId ? `/api/${tenantId}/parts/${partId}/replacements` : null;
+  const { data, error, isLoading, mutate } = useSWR<{ replacements: PartReplacementLog[] }>(
+    url,
+    fetcher,
+    { dedupingInterval: 2000 },
+  );
+
+  return {
+    replacements: data?.replacements || [],
+    error,
+    isLoading,
+    mutate,
+  };
+}
+
 export function useInspections(tenantId?: string, status?: string, templateId?: string) {
   const params = new URLSearchParams();
   if (status) params.set('status', status);

dashboard/lib/types.ts

@@ -132,6 +132,17 @@ export interface InspectionSession {
   updated_at: string | null;
 }
 
+export interface PartReplacementLog {
+  id: string;
+  equipment_part_id: string;
+  replaced_by: string | null;
+  replaced_at: string | null;
+  counter_at_replacement: number;
+  lifecycle_pct_at_replacement: number;
+  reason: string | null;
+  notes: string | null;
+}
+
 export interface InspectionTemplate {
   id: string;
   tenant_id: string;