feat: add auth and data providers with mock data hooks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/hooks/use-leads.ts

@@ -0,0 +1,56 @@
+import { useMemo } from 'react';
+
+import type { Lead, LeadSource, LeadStatus } from '@/types/entities';
+import { useData } from '@/providers/data-provider';
+
+type UseLeadsFilters = {
+    source?: LeadSource;
+    status?: LeadStatus;
+    search?: string;
+};
+
+type UseLeadsResult = {
+    leads: Lead[];
+    total: number;
+    updateLead: (id: string, updates: Partial<Lead>) => void;
+};
+
+export const useLeads = (filters: UseLeadsFilters = {}): UseLeadsResult => {
+    const { leads, updateLead } = useData();
+    const { source, status, search } = filters;
+
+    const filteredLeads = useMemo(() => {
+        return leads.filter((lead) => {
+            if (source !== undefined && lead.leadSource !== source) {
+                return false;
+            }
+
+            if (status !== undefined && lead.leadStatus !== status) {
+                return false;
+            }
+
+            if (search !== undefined && search.trim() !== '') {
+                const query = search.trim().toLowerCase();
+                const firstName = lead.contactName?.firstName?.toLowerCase() ?? '';
+                const lastName = lead.contactName?.lastName?.toLowerCase() ?? '';
+                const fullName = `${firstName} ${lastName}`.trim();
+                const phones = (lead.contactPhone ?? []).map((p) => p.number.toLowerCase());
+
+                const matchesName = firstName.includes(query) || lastName.includes(query) || fullName.includes(query);
+                const matchesPhone = phones.some((phone) => phone.includes(query));
+
+                if (!matchesName && !matchesPhone) {
+                    return false;
+                }
+            }
+
+            return true;
+        });
+    }, [leads, source, status, search]);
+
+    return {
+        leads: filteredLeads,
+        total: filteredLeads.length,
+        updateLead,
+    };
+};